Dissertations / Theses on the topic 'Bicycles – Design'
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Pålsson, Susanne. "Electric bicycle rack for an urban environment : A bicycle rack that caters for the needs for electric bicycles in today’s society." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-78873.
Full textCurry, Laura Elizabeth. "Bicycles and Bodies at the Edge of Roadway Design." Thesis, State University of New York at Buffalo, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1566868.
Full textWithin the discourse on environmentalism and transportation, artists and activists have engaged the bicycle as more than a means of transportation. For an American culture infatuated with the automobile, bicycling has taken on new meaning. Far beyond simply moving people from one place to another in an economical and ecologically friendly way, bicycling can now be understood as a set of symbolic acts intended to subvert and critique automobile culture. For example, artist and author David Byrne advocates for a burgeoning culture of bicycle riders as part of a transportation revolution. Commute Clot, (also known as Critical Mass), a monthly public cycling event in over 300 cities worldwide, situates hundreds of bicyclists, riding en masse usually at rush hour, as activists on busy urban streets, promoting an active, physical and frequently dangerous confrontation between the motorist and cyclist.
Even without the in-your-face confrontation staged by Critical Mass, the material and social conditions of urban cycling can be anything but pleasurable. This project engages media and technology to explore and articulate the roadway as a landscape of frictions between the unprotected flesh of the cyclist and the unyielding metal of the automobile. The topic emerges as especially timely and urgent because the symbolic value of the bicycle as a healthy and environmentally positive option to automobiles frames this opposition anew as a conflict between carbon powered and human powered movement.
The daily confrontation between the motorist and the cyclist, however, involves a real level of danger. To articulate the non-motorist's relationship to the roadway, I consider the bicycle within potential hostile contexts such as roadways without bicycle lanes, locations with extreme weather, and shared roadway space where the non-motorist's bicycle awareness and bicycle knowledge are less evident.
As an artist, I am drawing on the data of the lived bodily experiences of the bicyclist in order to reveal the complexity of social-spatial relations embodied in the non-motorized roadway. Through doing so I am specifically interested to challenge urban design and transportation policies that create hegemonically fraught roadway spaces. Such institutionalized design processes, like those found in urban planning, whether top-down or participatory, tend to be abstracted, where the embodied experience of the roadway users are not considered in the planning discourse. Because the body is missing from the planning dialogue, a public perception evolves where the roadway is assumed to be a space for motorized vehicles. This perception is marginalizing if not life threatening for cyclists and other pedestrians. Casting others' and myself as the quantified interface with the roadway systems using audio recording, photography and interviews, I track the mental and physical experiences of others' and myself while on the roadway. My projects Rest Stop Bike Repair Shop, and Bike Date become platforms for promoting a phenomenological approach to critical roadway design. From a ground up, grass roots-based activist art practice, it is my hope that these planning and design processes can become more informed and influenced by the lived experience of non-motorized roadway inhabitants.
Streitenberger, Dirk. "Analysis and optimization of a new design of a bicycle frame." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/19595.
Full textQuek, Natalie. "From Cars to Complete Streets: Integrating Bicycles Into Seattle's Transportation Network." Scholarship @ Claremont, 2019. https://scholarship.claremont.edu/scripps_theses/1330.
Full textLyon, Mark Edward. "Incorporating Functionally Graded Materials and Precipitation Hardening into Microstructure Sensitive Design." Diss., CLICK HERE for online access, 2003. http://contentdm.lib.byu.edu/ETD/image/etd260.pdf.
Full textHunt, Christopher Allen. "CORGI: Compute Oriented Recumbent Generation Infrastructure." DigitalCommons@CalPoly, 2017. https://digitalcommons.calpoly.edu/theses/1708.
Full textTovar, López Carlos. "Electric Bicycle Design." Thesis, Jönköping University, JTH, Mechanical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-10075.
Full textThe thesis consists of the design of an electric bike.
Based on the analysis of the needs arising from urban transport in Sweden and its people.We wanted to develop a bicycle that could be manufactured in the coming years and be widely accepted by the Swedish population and later also in Europe.
Lam, Duhane. "Bicycle suspension design." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0025/MQ51383.pdf.
Full textRacz, Rastislav. "Design of a bicycle rig." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/59956.
Full textCataloged from PDF version of thesis.
Includes bibliographical references.
A design of a bicycle (bike) rig was conducted. This bike rig is designed to be used for aerodynamics measurement testing of bicycles, cyclists and cycling related items in a wind tunnel. This paper discusses the design of a new version of the bike rig that has been used in the MIT Wright Brothers Wind Tunnel. Through finite element analyses, feasibility and practicality studies the best bike rig was designed. A three groove kinematics coupling principle was used in the design of the measurement device of the rig. This paper contains detailed description of the working principle of the bike rig. This paper can also serve as instructions for building a new bike rig.
by Rastislav Racz.
S.B.
Lawrence, Molly. "Experiential Graphic Design: Generating Urban Renewal by Improving Safety and Connectivity in Bicycle Pathways." Kent State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=kent1460734967.
Full textVechakul, Jessica. "Design of bicycle ambulances for Zambia." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/43124.
Full textIncludes bibliographical references (p. 77).
In developing countries, people are dying from treatable diseases because they cannot reach medical care when they need it most. Typical methods of transport, such as wheelbarrows or motorcycles, are too slow, dangerous, or expensive. The bicycle ambulance is a locally produced and maintained, fuel-less vehicle that provides safe, affordable transport. The design of this appropriate technology varies greatly between countries because of the variability in local conditions, such as terrain, cultural stigmas, and availability of materials.This thesis describes the development of a bicycle ambulance (Zambulance) designed for Zambia. The Zambulance is a two-wheeled trailer that carries a sheet metal stretcher, and can be towed by common bicycles. The ambulance is fabricated from standard bicycle components and steel stock, such as 25mm round tube that can be easily bent to minimize cuts and welds. A single rider can transport one patient at average speeds of 25kph for distances up to 35km on passable B-grade roads. The trailer is 200cm by 98cm and weighs 22 kg, while the stretcher is 200cm by 65cm and weighs 20 kg. The Zambulance costs 1,200,000 Zambian Kwacha or about 315USD (based on exchange rate on December 27, 2007). One Zambulance can be fabricated in about 20 hours, which are usually spread over 5 days.There are currently forty-seven Zambulances in Zambia, and more are being produced by Disacare Wheelchair Center in Lusaka, Zambia. From January 2006 to August 2007, one bicycle ambulance was used over 125 times to transport patients from their homes to the nearby clinic and hospice. According to records, the ambulance carried men and women between the ages of twelve and ninety who were suffering from various ailments including cholera, tuberculosis, HIV/AIDS, blindness, broken bones, anemia, and pneumonia.
A production manual, user manual, and assessment material is available online for free downloading at http://cadlab6.mit.edu/bike.ambulance. Long-term monitoring and evaluation of the design is needed, but current data suggests that the Zambulances are already saving lives by closing the transport gap between patients and healthcare.
by Jessica Vechakul.
S.M.
Hleu, Hong-Jeu, and 呂弘智. "Design of Modular Bicycles." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/78756750965557115032.
Full text國立中山大學
機械工程研究所
83
The "modular bicycles" is a new conception. By means of assembling or aking apaert of the modules, this research let the bicycles that are useing for recreational purpose can be riden by both single and couple. This article first devide the modular bicycles into three sub-systems for discussion: frame system, transmission system and brake system, then formulate every part''s problems and design objective, consideration, constract. After this is done, we begin the stage of conception design. In this stage, two method are used at the same time to generating new concepts: one is extracting the current device, theother is Brain storming method. All the new concepts that are generated by the both methods are evaluated and modified in order to find the viable concepts. After the stage of concept design is finished, the prototype will be made to verify the concepts that we have choosed and modify them if necessary.
Lin, Wai-Hon, and 林偉宏. "Intelligent Controller Design for Electric Bicycles." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/46845788965088663789.
Full text吳鳳技術學院
光機電暨材料研究所
94
Bicycle is a space free and multi-functional traffic tool that can use for transportation, daily habit, and exercising. Moreover, if the battery is installed on bicycle, this can ease rider's energy. The purpose of this research is to design a practical bicycle with a versatile and inexpensive controller that can be commercially produced. We developed an intelligent electric bicycle that base fuzzy logic control on the Programmable System-on-Chips approach. The key point is to use fuzzy logic control to control the speed of the bicycle that efficiency the use of the limited battery's power. The uses of fuzzy logic control design have three models, electric bicycle model, smart model and fixed speed mode. Sensor include use hall sensor. The LCD displayer on the bicycle panel can provide the battery voltage, speed and mode of the bicycle. To gain more power of the motor, we used direct current motor. Via many experiments, we have carefully adjusted the parameters, such as memberships and rule; the final result matches our expectation.
Liu, Chia-Wei, and 劉家瑋. "Bicycles Creative Design Approach with Functional Attributes." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/03809812084230375092.
Full text樹德科技大學
應用設計研究所
100
The purpose of design is to solve problems and allow for better quality of life. In today’s customer-oriented generation, designers must complete designs that meet customer demand within a shorter time. Various design approaches will be applied according to different procedures in the design process, and the follow-up design timeliness will be impacted if the selection and application of various design approaches cannot be accurately applied. Consequently, the purpose of the study is to develop a set of design approach which can commence a large amount of innovative concepts within a short period of time. The study first appreciates that product function is the nature of product attributes through literature exploration, and appreciates the application of the existing functional design approach to establish the basic concept of the paper through the study base of product function. Subsequently, the study applies the product-functional-complex-bicycle as the exploration product of the study to seek out bicycle related studies, understand the basic bicycle forming classification, and redefine that the basic construction of a bicycle consisted of five systems. The study collects conceptual bicycle design through the renowned online design magazine- YankoDesign, and classifies the collected conceptual design cases into standard design type, folding design type, innovative function design type and accessory design type. Since accessory design is only the creative design of additional functions, not a full body design, it is excluded in the following analysis. We process function analysis on the 3 major bicycle conceptual design cases- 36 standard design types, 27 folding design types, and 37 innovative function design types, and apply the basic five major systems of bicycle defined by the previous chapter as the structure to develop the functional attribute symbol system of bicycles. The system classification is established through a basic component system, accessory system, joint system and link system to complete the establishment of a functional system symbol, finally, the functional symbol system is applied as the tool to establish the design process and the practical application case. As for the establishment of the design process, we apply an innovative function design type case as the process application sample. First, the design requirement of the design case is described, and when determined according to the requirements, the required functional symbol can be satisfied. The selection will be applied to the spatial permutation and combination change of the structure variation method in the next phase. After the permutation and combination change, find the matching functional symbol map which corresponds with the design to complete the design process establishment.
Chen, Bai-Jun, and 陳百俊. "Design of Multi-Speed Hub for Bicycles." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/26397757581121935163.
Full text國立中山大學
機械工程學系研究所
89
英文摘要 A multi-speed drive hub is one of important components in transmission system. The purpose of this work is to develop a system methodology for the design of multi-speed bicycle drive hubs by using a concept of combination. First, identify the basic characteristics and design requirement of combinative multi-speed drive hub. Second, using three combinative the useful gear trains. Third, a method is proposed to determine the feasible multi-speed sequence tables for each gear train. Fourth, an analytic method is formulated to synthesize the gear ratios and gear teeth according to a set of desired speed ratios. Fifth, a computer programs developed for the automatic analysis the transmission performance of drive hubs. The results of this work will be benefit to the development and design of multi-speed bicycle drive hubs.
Huang, Yu-Chun, and 黃鈺淳. "Design and Analysis of Anti-theft Bicycles." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/yf6jb2.
Full text國立臺北科技大學
機電整合研究所
98
This research will deal with the analysis and design of an anti-theft bicycle. At the first, the structure of the bicycle lock device will be focused. Therefore, all related academic journals, dissertations, and patent were collected, ordered, classified, and analyzed in order to understand the phase of the developing tendency towards the bicycle lock apparatus presently. Nowadays, a wave of riding bicycles all over the world is quite prevailing. Also, the bicycles incline to be high-price sporting and recreational equipment. Due to this, the rate of stolen bicycles has increased as well. Even though there are many different types of bicycle locks sold on the market, they are unable to work out effectively to prevent from being stolen because they are easy to be broken. In this case, the target design in this research will be mainly put on the simple structure and facile use enabling users feeling secure to park their bicycles. Based on the process of creative mechanism design, the main functional requirement is firstly defined. Then, the basic structure of the anti-theft bicycle frame is designed, according to the essential size of the bicycle. At last, all the needful design requirement are integrated. To understand the distributive state of stress analysis, SolidWorks is used to draw the 3D model of the anti-theft bicycle and ANSYS is executed to proceed stress analysis.
Chen, Huei-Yang, and 陳惠陽. "Folding Mechanism Design Of Foldable Electrical Bicycles." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/76aa93.
Full text高苑科技大學
機械與自動化工程研究所
100
In order to encourage using personal portable green transportation and enhance the transport of the public transportations, and then achieve the goal of energy economy and emission reduction of carbon dioxide. The purpose of this thesis is to develop a new foldable electrical bicycle which is light weight, easy to fold, small volume, able to be carried into all kinds of public transportations and indoor space by users, able to move forward and backward and to overcome obstacles of the ladder by pulling or pushing after folding. According to the results of patent search, classification of the folding mechanisms of foldable bicycles is done. Five new design concepts are obtained. Two design concepts are selected for detail design by performance evaluation. Three prototypes of foldable bicycles are manufactured and tested. The research results can be the important references for commercialization of these new type foldable bicycles.
Chang, Yi-Cheng, and 張益政. "Design of Piezoelectric Energy Harvester for Bicycles." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/m4r2c5.
Full text國立臺北科技大學
機電整合研究所
105
In this research, the architecture of piezoelectric energy harvester is composed of a piezoelectric cantilever beam and magnets. Vibration of cantilever beam is due to repulsive forces from magnets. First, we use finite element analysis software (COMSOL) to construct model of the piezoelectric cantilever beam. Then, by calculating the resonance frequency of the cantilever beam, specifications of the piezoelectric energy harvester used in a bicycle can be determined. By experiments, we find out the magnetic repulsive force that magnet applies on the cantilever beam is approximate to a periodic triangular wave. We apply periodic triangular wave form excitation to the piezoelectric cantilever beam by shaker to simulate the vibration response of cantilever beam when cycling. In the meantime, software simulation is also carried out to analyze the responses. From the results, when forcing frequency is equal to one fold, half, one third and one fourth of cantilever beam 1st resonance frequency, cantilever beam will vibrate at resonance to have maximum amplitude. When the riding speed is 17.3 km/hr, 8.4 km/hr, 5.6 km/hr and 4.2 km/hr, this energy harvester can have larger power generation efficiency. The maximum power generated by the energy harvester can be up to 135μW.
Cheng, Sheng-Yuan, and 鄭盛遠. "Design of Non-Circular Sprocket for Bicycles." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/q5ccsm.
Full text國立虎尾科技大學
動力機械工程系機械與機電工程碩士班
105
Recently, health issues is getting more attentions than ever. It makes the requirement of the sports equipment with higher performance and good characteristics. As the times change, the structure is optimized for bicycle, and sprocket is one of them. This study applys Visual Studio C++ to design and automatically draw non-circular sprocket. The eccentricity of the elliptical sprocket and JIS tooth profiles are compare with the effectiveness. A circular sprocket and elliptical sprockets of eccentricity, 0.2, 0.4, 0.6 respectively, with tooth profile, type S and type U, are manufactured for the experiments. The result reveals that the elliptical sprocket with 0.4 eccentricity is the best one. The results also show that JIS-U profile is better than S-type. The torque trajectory is obtained from the experiment and fitted with Matlab to get the best pitch curve of sprocket.
Liu, Chin-Min, and 劉啟民. "Innovative Design and Manufacture of Folding Bicycles." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/tjmsd7.
Full text國立虎尾科技大學
機械與機電工程研究所
99
While riding a bicycle can effectively reduce carbon emissions, but there are downsides such as storage difficulty and space consumption, but this can be overcame with folding bicycles. This study researched on the literatures of existing patents on the folding bicycles and analyze the original mechanisms through tools such as technical contradiction, physical contradiction, substance-field analysis and ideal final result of the innovative TRIZ theory to proceed systematical innovative design, in order to produce a series of innovative solutions that solve the problems such as the reduced size after being folded, inconvenience as carry-along, high theft rates and other issues to finally choose one of the most advantageous and innovative solutions to further proceed with design around process so application for new patent can be made, in order to verify the practicality and the innovative solution can become the manufacture prototype. The achievements and contributions of this study are as follows: (1) Other than using what other general folding bicycles do by folding once with the folding boxes, it can be further folded with using the revolving shaft in order to further reduce the size after being folded; (2) after folding the bicycle, it is provided with a user-friendly portability where one can push along the bicycle with it’s two wheels toward the ground; (3) increased anti-theft function to reduce the risk of theft; (4) obtains the value of potential patent application.
Chih-Bin, Yu, and 余志斌. "Controller Design for Green Energy Electric Bicycles." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/66746715019267436384.
Full text吳鳳技術學院
光機電暨材料研究所
96
It is a multi-functional traffic tool for the bicycle with the capabilities of the transportation, leisure, sport and so on. The bicycle is re-equipped the rechargeable battery and the motor, then the rider is more suitable for riding and is improved for the convenience and practicality. Based on the control of the Fibonacci time zones, the Programmable System-on-Chips and adding the recycling circuit of the power to the motor driver, we proposed the controller of the motor-driven bicycle with the recycling power in order to increase the passage distance of the motor-driven bicycle.
Chen, Chung Yung, and 鍾永鎮. "Design of Multi-Speed Hub for Bicycles." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/36137057120576989840.
Full text國立中山大學
機械工程學系
87
The purpose of this project is to develop the design theory of multi-speed bicycle drive hubs. First, Characteristic of Multi-speed hub will be concluded by function analysis. Next, a systematic procedure will be presented for the design of bicycle drive hubs. Then, the kinetmatic design of multi-speed drive hubs will be proposed to the development of a complete atlas of multi-speed drive hubs. Finally, the basic theory for transmission and operating performance analysis of multi-speed drive hubs will be developed to determine the optimum mechanism. The result of this project will be of benefit to the development and design of multi-speed bicycle drive hubs.
吳益彰. "Design of Five-Speed Drive Hubs for Bicycles." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/18534679148063527463.
Full text國立中山大學
機械工程研究所
85
A multi-speed drive hub is one of important components in the transmission system of bicycles. The purpose of this work is to develop a systematic methodology for the deisgn of five-speed bicycle drive hubs. The basic characteristics of bicycle drive hubs are first identified such that all N-link admissible planetary gear trains can be synthesized fromt he catalog of (N-1)-link geared kinematic chains. Next, a method is proposed to determine the feasible five-speed sequence tables for each gear train. Then, an analytic method is formulated to synthesize the gear ratios and gear teeth according to a set of desired speed ratios. A computer program is further developed for the automatic analysis the transmission performance of drive hubs. In this investigation, we have successfully constructed atlas of nine practical design concepts for five-speed bicycle drive hubs. The results of this work are of benefit to the development and design of new multi-speed bicycle drive hubs.
Lin, Yi-Chang, and 林義城. "Configuration Design and Motion Simulation of Foldable Bicycles." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/vc88a7.
Full text崑山科技大學
機械工程研究所
97
Folding function of folding bicycles is to facilitate the carrying of bicycles. Basically, the transport functions of folding bicycle are the same as the use of general using bicycles. In appearance folding bicycle is more lightweight, more flexible operation such as it is helpful to provide the functions of comfortable operation for modern people. As a result of folding bicycle frame must have a folding function, it must be a multi-degree of freedom mechanism. Literature does not systematically investigate the folding bicycle frame design. Hence, the purpose of this paper is to investigate, analysis, and creatively design the mechanism of folding bicycle frame. First, we analysis the topological structure and motion characteristic of exist folding bicycle frame. And, we conclude the design constraints and criteria of folding bicycle frame in order to creatively design new folding bicycle frame. Furthermore, we use the methodology of creative design of mechanical devices to design folding bicycle frame mechanism with satisfied requirement. The design results are 391 new folding bicycle frame mechanisms. Finally, we simulate the motion sate of 3 of the 391 new designs by using a CAD package, the results show the proposed design constrains, criteria, and results are feasible.
Wang, Hsing-chun, and 王星淳. "Converter Design for Power Generated from Exercise Bicycles." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/83339166685804866409.
Full text國立臺灣科技大學
電機工程系
101
This thesis aims to design an ac-dc power converter and inverter for the power generated from electric bicycle. Specifically the generated power with varying voltage and frequency is transformed into that with fixed voltage and frequency, and is then connected to the grid. As for the three-phase ac-dc power converter connected to the generator with Hall-effect sensors, the six-step current square wave control is used to stabilize the output power. Whereas, for DC link voltage closed-loop control mode, the energy is fed back to the grid for energy saving. In this system, a high-performance digital signal processor TMS320F38035 is adopted as the control core. All control strategies are accomplished with C language. The hardware used in this system will be elaborated in the text. The output power of the system is 278.3W while the system operates at a speed of 267rpm with a current command of 16A. The total harmonic distortion of the grid current is 4.69%.
Su, Shyh-Haur, and 蘇士豪. "OPTIMUM DESIGN FOR REAR DERAILLEUR SYSTEM ON BICYCLES." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/41908329396419408366.
Full textHeil, Daniel P. "The effect of seat-tube angle variation on cardiorespiratory responses during submaximal bicycling." Thesis, 1991. http://hdl.handle.net/1957/37300.
Full textLan, Tain-Yo, and 籃天佑. "Design and implementation of speed controllers for electric bicycles." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/45193095784767450733.
Full text高苑科技大學
電機工程研究所
98
Electric bicycle is a class of systems with huge variation in load. When the traditional PI controller is utilized, the response of speed is extremely slow when the load varies dramatically. On the other hand, it also demonstrates the excellent speed response confining in some specific range of load variations. Then, the excellent speed response can not be achieved by the traditional PI controller under each load. Therefore, an adaptive PI controller, the tracking load controller, is proposed in this thesis. The proposed controller will follow automatically the load variations of the motor in accordance with the adaptation of the integral gain. The integral gain will increase or decrease as the load increase or decrease, respectively. Then, the excellent speed response can be achieved under each load. Finally, some experiments also show that the response can be indeed obtained by the proposed load tracking controller.
Cheng, Po-Jen, and 鄭博仁. "Conceptual Design Method of Mechanical Auto-Transmissions for Bicycles." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/21317915018586197952.
Full text國立臺灣大學
機械工程學研究所
100
The propose of this study is to develop the possible design concepts for the mechanical bicycle auto-transmissions. Through this study, we are able to synthesize and evaluate the mechanical bicycle auto-transmissions by mechanical clutch. In this study, firstly, the ”functional power graph” is developed, which can transform the multi-power flow system to easy graph. Then we can develop the new double-path or triple-path system by a systematical design method. Through combining the power stream system by placing the clutches, we can create new system design of mechanical bicycle auto-transmissions. Then, we can analyze the effectiveness of the system by using the parametric analysis, and select the system which have better effectiveness. By using Matlab to analyze these system by straight accelerated method, we can realize the which is the best effective system. And we can optimize its effectiveness by changing gear-ratios and transmission timing. Finally, we can compare the system with the basic city bike model to verify the method, and show the advantage of the automatic transmissions systems.
Ren, Pei-wun, and 任佩雯. "Design of an Eight-Speed Transmission Hub for Bicycles." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/60795108553046890179.
Full text國立雲林科技大學
機械工程系碩士班
100
The transmission hub in a bicycle is a speed-changing device which mainly including a gear mechanism and a power-transmission control mechanism. From the structural point of view, the transmission hub is more reliable and durable than the traditional rear derailleur. This paper presents a systematic design of a novel 8-speed bicycle transmission hub. The gear mechanism, kinematic analysis, and mechanical efficiency analysis of the transmission hub are presented. A feasible control mechanism is further established based on the clutching sequence table. Finally, the engineering drawing of the eight-speed transmission hub is completed with the aid of the computer-aided drafting software. The results show that the average mechanical efficiency for each speed can reach to 98.58%. The proposed approach may provide contribution on the development and innovation of novel transmission hubs.
Cheng, Chia-Ho, and 鄭家和. "Design of Control Mechanisms of Transmission Hubs for Bicycles." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/31115726816846665712.
Full text國立雲林科技大學
機械工程系碩士班
101
The multi-speed transmission hub is one of the most important devices in the transmission systems of bicycles. It is more reliable and durable than traditional rear derailleurs. The purpose of this work is to develop control mechanisms for multi-speed bicycle drive hubs. The configurations of several transmission hubs and corrsponding clutching sequance tables are introduced, and the mechanical efficiency of theses transmission hubs are calculated by using fundamental circuit method. A design process for the implementation of control mechanisms of multi-speed transmission hubs is proposed. Three design examples including two 8-speed and one 12-speed transmission hubs are presented to illustrate the embodyment design of related control mechanisms associated with transmission mechanisms. The results of this work are beneficial to further development of multi-speed bicycle drive hubs.
Chi, Yu-Hsin, and 紀佑欣. "Creative Design of Multi-Speed Hub System for Bicycles." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/03635857799480441723.
Full text國立中山大學
機械與機電工程學系研究所
90
A multi-speed drive hub is one of important components in transmission system. The purpose of this work is to develop a system methodology for the design of multi-speed bicycle drive hubs. First, identify the basic characteristics and design requirement of multi-speed drive hub. Second, using the useful gear trains. Third, a method is proposed to determine the feasible multi-speed sequence tables for each gear train. Fourth, an analytic method is formulated to synthesize the gear ratios and gear teeth according to a set of desired speed ratios. Fifth, the basic theory for transmission analysis of multi-speed drive hubs will be developed. The results of this work will be benefit to the development and design of multi-speed bicycle drive hubs.
Chu, Chia-Chun, and 瞿嘉駿. "On the Design of New Hub Transmissions for Bicycles." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/74377283807700583495.
Full text國立成功大學
機械工程學系
86
AbstractThe purpose of this work is to systematically design new types of hub transmissions for bicycles. First, the transmissions for bicycles are introduced, defined and classified, and the target hub transmissions are described. Information, patents, the evolution, and the development regarding hub transmissions are collected, analyzed, codified, and predicted. And the performance and characteristics of hub transmissions and derailleurs for bicycles are compared. The QFD technique is applied to convert qualitative customers requirements into qualitative engineering specifications. Eight new concepts of hub transmissions are synthesized, and one concept is chosen for detail design. As a result, a prototype of the new hub transmission for bicycles is obtained. This new design improves the drawbacks of existing 3-speed hub transmissions. And, this feasible prototype provides a solid background for commercial mass productions.
Lin, Tsung-Yin, and 林聰穎. "Design and Manufacture of Freewheel Test System of Bicycles." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/12462782410597596896.
Full textKuo, Hsi-Ta, and 郭錫達. "Power Module Design for Proportional Power-Assist Electric Bicycles." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/k955c4.
Full text中原大學
機械工程研究所
99
Currently under the influence of the energy crisis and global warming, alternative energy – electric power is the best replace methods. Development of electric cars is the focus of the industrial countries in the world, With the development of electric cars, more and more developed electronic components and advanced materials technology, efficiency and volume gradually to meet modern requirements. The modular design of scooters, the use of self-designed torque sensors, special brushless motor and electronic control circuit board, integrated into a purpose-built chassis, placed on the bike below, in order to achieve high endurance, effort, keep feet Riding riding fun.Experimental research on flexible pressure is a linear relationship between perception of film, special brushless motors and brushless motors for general industrial use of the comparison, the module power and tension than riding on the experiment to test the feasibility of modules.
徐睿廷. "The Conceptual Design of Front Hub Transmissions for Bicycles." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/38903110926401437111.
Full text國立中正大學
機械系
91
Hub transmissions have already been implemented in bicycles for a long time, but most of them were designed for rear hub transmissions. The purpose of this thesis is to study the design criteria of front hub transmissions for bicycles and to develop some new conceptual designs. First, the literatures and patents about hub transmissions are collected and classified. The design requirements and constraints are defined. Next, A creative design process is proposed to synthesize all possible types of front hub transmissions. As a conclusion, the five-bar 2-DOF planetary trains can be developed to twelve types of 3-speed front hub transmissions and four types of 4-speed; and the six-bar planetary trains can be developed to sixty types of 5-speed and twenty six types of 6-speed. Finally, a best 5-speed conceptual design is evaluated and developed to a new front hub transmission.
Liu, Hans, and 劉懿漢. "Design, Analysis, and Fabrication of Air Spring for Bicycles." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/18424116227750920926.
Full text國立成功大學
工程科學系
89
Air springs are wildly used as suspension systems in many areas. Specifically, developed in vehicles. This research was attempted to develop an air spring that used in bicycle. The first work in this research was designed an air spring mold, then made the air spring by rubber and plise. The compression mold has been used in the mold design. And used the pneumatic airbag to generate inside shape of air spring. In order to describe the load/deflection curve of the air spring, MTS dynamic test system and finite element analysis method were employed, and the ANSYS software was used as finite element analysis tool. Besides, get the damping coefficient by regression analysis. The driver would know how to inflate pressure in air spring that can get the better elastic coefficient and damping coefficient to provide the shockproof effect.
Chen, Hung-Hsuan, and 陳弘軒. "Computer-Aided Design of Multi-Speed Hub System for Bicycles." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/72389567686632783840.
Full text國立中山大學
機械與機電工程學系研究所
93
The multi-speed drive hub mainly makes for change speed with planetary gear trains. It has some advantages such as small, change the shelf steadily to move and difficult to receive external environmental impact. So the multi-speed drive hub has already become the focal point that every bicycle''s factory researches and develops gradually. The purpose of this work is to develop a system methodology for the computer-aided design of multi-speed bicycle drive hubs. First, analyzing multi-speed drive hub patents to identify the basic characteristics and requirement of multi-speed drive hub, and using a systematized method synthesizes the feasible gear trains. Second, a method is proposed to determine the feasible multi-speed sequence tables for each planetary gear train. Third, a method is formulated to find the gear ratios and gear teeth according to the feasible multi-speed sequence tables. Fourth, a method is to design and dispose the governors of multi-speed drive hubs easily. Finally, using Visual Basic 6.0 procedure language develop a computer software easy to use by utilizing the above-mentioned procedures, and the results of this work will be benefit to the development and design of multi-speed bicycle drive hubs.
Lin, Jin-Lung, and 林金龍. "Design and Analysis of a Torque Sensor for Electric Bicycles." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/qbwe3s.
Full text國立臺北科技大學
製造科技研究所
100
This research devoted to develop a new type torque sensor. The torque sensor will added some components between crank and button bracket for this design. When rider put a big pedaling force on pedals, the motion of relative angular displacement will occur between chain wheel and crank. Then use the relative angular displacement change to an axial displacement of ring magnet, and measure the displacement quantity of ring magnet by sensor. The quantity of pedaling force can be counted by SCM. The torque sensor of this research has merits including simple stricture and low cost. Doing design with a view to simple to working, easy to detecting the change of torque, and avoiding changing the work custom for user. Herewith the surtax value of products is raised, and raises the competitive advantage for markets. This research collected patents and literatures about torque sensor. The collected articles were analyzed and classified according to the detection method and detectable portion of the torque sensor. This research will proceeded with some works such as construct the computer model, verify the motion simulation, and check the interference of model by CAD software, and enforcing the structural stress analysis to ensure its strength conform with safety usage by CAE software. New patent was booked for the outcome of this research.
CHEN, JUN-RONG, and 陳俊榮. "Design of a Modular Two-Input Power Device for Bicycles." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/t88tax.
Full text國立雲林科技大學
機械工程系
106
Due to the effects of global warming, the government has started to promote awareness of green energy and environmental protection. It induced more and more city residents to ride bikes for transportation or as recreational sport. The electric (assisted) bicycles on the market are mainly based on hybrid power devices or electric devices at present, not yet having single drive or simultaneous drive devices. This study proposes a device that can select both single & simultaneous driving with pedaling force and electric motor power-assist. The proposed power device uses a planetary gear mechanism as the force coupling parts and output to the rear wheels. Frist, the fundamental circuit equation was used to analyze the kinematics of the basic planetary gear mechanism; the most suitable driving model was then selected to match the mechanism design. Also, power-flow analysis and finite element analysis were carried out to analyze the strength of each mechanical part. The power device can be assembled on a universal bicycle by adopting the modular design, in combination with the rear-wheel inner-transmission hub. Finally, the prototype has three riding modes: single rider pedaling, single motor assisted drive and hybrid power.
Lin, Shi-Liang, and 林詩喨. "Conceptual Design of Novel Multi-Speed Drive Hubs for Bicycles." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/67442624930164352004.
Full text國立雲林科技大學
機械工程系碩士班
97
Multi-speed drive hubs are one of key components in the transmission systems of bicycles. The purpose of this study is to develop a systematic methodology for the conceptual design of novel multi-speed drive hubs for bicycles. The topological characteristics and design requirements of bicycle drive hubs are first identified. Next, a catalog of usable planetary gear Mechanisms is systematically established with series and parallel connections of basic planetary gear modules. A feasible design process is then proposed to synthesize the gear ratios and gear teeth of planetary gear mechanisms according to desired speed ratios. A novel 16-speed bicycle drive hub is successfully presented to illustrate the feasibility of this design process. The results of this work are of benefit to the innovative design and development of multi-speed drive hubs.
Lin, Chang-yu, and 林昶佑. "A Study of Design Strategy for Taiwan Electric Bicycles Industry." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/81855628336335049251.
Full text國立雲林科技大學
工業設計系碩士班
91
It has been more than 40 years since Bike industry developed in Taiwan, and has attained mature stage, not only technique of manufacture or job division mode have been developed succefully, quality of products is also commandable. Electric bikes are currently developing vigorously, it will be very critical that traditional Bike industry turnover to high technology industry, in addition, PLC is currently in introduction, so it is a high growth new industry. While it competite with other countries, enhancing R & D capability is the foundation to enlarge competitive advantages, therefore, when a corporation make decision for strategies of further R & D and whose products, they demand a complete design strategy as R & D target and regulation. By means of discussing literature and case study, we conclude the basic process of building design strategy for electric bike industry, 6 types of design strategies and 15 dimensions for building strategies, to analysis and discover that 3 types of strategies are appropriate to electronic Bike industry in Taiwan. The main discoveries of the survey include :(1) the process for plane strategy by each inspected factories are not different obviously. (2) Design strategies are basically different as per degree of development for each factory. (3) Each factory focused on different dimensions. (4) Government regulation, corporation impression, product value, operation, innovation of technique and common platform are six important dimensions to consist design strategies, however, importance of other dimensions are different as per strategy mould. Each corporation can facility the structure to integrate information of each dimension, thus, have developed most appropriate direction of design strategy for each corporation. By means of integrat information of each dimension, corporation can check whether operation of strategy comply with expected strategy direction. The systematic machanism can make corporation find position of strategy quickly, it is also helpful for extention of design strategy and evaluation.
WANG, CHUAN-CHENG, and 王傳承. "Optimum design for sprocket shape of the freewheel on bicycles." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/30957163264403906540.
Full textChang, Ming-Yen, and 張明彥. "On the Design of Anti-Dive Front Suspension Mechanisms for Bicycles." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/24718348769375317313.
Full text國立成功大學
機械工程學系
88
The purpose of this work is to design anti-dive front suspension mechanisms for bicycles. The history of bicycle manufacturing industry in Taiwan is firstly introduced as background information. The anti-dive theorem is then derived. The anti-dive effect is estimated with the dimensions of the linkages. QFD technique is then applied to convert qualitative customer requirements into quantitative engineering specifications. Based on existing mechanisms, a systematic design methodology is applied, subject to design requirements and constraints, for the structural synthesis of bicycle front suspensions, and eight design concepts are synthesized. Decision Matrix Method is further applied to decide which of the eight solutions is the best new design. The detail dimensions of the new type anti-dive device are designed by considering the dimensions of the existing bicycle parts. A computer simulation software is developed and a prototype is built. The results show that the designed anti-dive front suspension mechanism is able to achieve the requirements. In conclusion, this work develops a systematized methodology to design a feasible anti-dive front suspension mechanism for bicycles, which may lead into a new generation of anti-dive front suspension mechanisms for designing bicycles.
Hsu, Pai-Hsiang, and 徐百祥. "OPTIMUM DESIGN FOR SPROCKET TOOTH PROFILE OF THE FREEWHEEL ON BICYCLES." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/53124902839020441583.
Full textLung, Chang Chieh, and 張介龍. "Design and Control Analysis of an ElectricMotor for Electric Assisted Bicycles." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/78havv.
Full text逢甲大學
資訊電機工程碩士在職學位學程
106
In this thesis, a wheel-type permanent magnet synchronous motor drive system for electric assist bicycles is presented. A driving control device is also developed to meet the safety regulation EN15194 European Standard of electric assisted bicycles. The driving system is able to assist the user based on the pedal effort generated by user, and controls the output power and speed of the motor to to meet the safety regulation EN15194. The motor is rated of 250 W, 12 Nm at a rotating speed of 200 rpm. The field oriented control is employed.
WANG, TING-CHUN, and 王亭竣. "Design and Analysis of Permanent Magnet Motors for Electric Assisted Bicycles." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/258dte.
Full text逢甲大學
電機工程學系
106
This paper describes the design and analysis of a permanent magnet brushless motor for electric assisted bicycles to satisfy the specification for the European standard EN15194. First, two slot-pole combinations of motors are chosen, the finite element analysis (FEA) software, Flux 2D has been used to analyze the motors performance, such as, cogging torque, back electromotive force, torque and efficiency. Then the slot-pole combination that has the better performance is chosen for the following analysis. To minimize both the usage of magnets and torque ripple, the sensitivity analysis , Taguchi methed and fuzzy Taguchi method is applied, while still meeting the specifications of the motor.
Lu, Mu-lin, and 呂慕林. "Application of Computer Aided Design in Product FormDesign of Electric Bicycles." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/5se374.
Full text大同大學
工業設計研究所
93
Abstract With many advantages of Electric bicycles, they have been still not common and popular. The main reason is that their exterior design has not revealed its essence. Moreover, the entire bicycles give a sense of instability when the frame is fitted with the transmission components such as a battery and motor, and this make a consumer not buy it. Therefore, it is essential to design a premium Electric bicycle form that can meet the need of consumers. This study will regard the results of measurement(force, pressure), of riding posture measurement, and of positioning of components such as battery, motor, etc as the boundary and limit conditions and will use the topology optimization design, including the optimization algorithm, structural analysis tool, and the topology optimization method to derive the Electric bicycle’s frame forms. Using cluster analysis on those collected city entertainment bicycle frames and derived frames, we will also prove that the derived frames are innovative designs. The results of the electric bicycle shape combination that can affect each kind of awareness of the two groups, obtained from “Quantification I” can be combined with the awareness prediction database to be used as reference data and supplementary tools for those designers of electric bicycles. The prediction database learned from the BP neutral network can help the designers to obtain the electric bicycle frame form that meets the designers’ image through an image term and through the database system. This system can help the designers to get a searching bridge between the image and the bicycle frame form.
Chen, Li-An, and 陳立安. "Design and Analysis of Novel Multi-Speed Transmission Hub of Bicycles." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/32851719251792654675.
Full text國立雲林科技大學
機械工程系
102
A bicycle transmission hub is a speed-changing device installed on the rear fork of a bicycle. It's a mechanical device with several adventages, such as compact size, high efficiency, long lifetime, high stability and available to change speed when the bicycle is stopped. Four different transmission hub, including Shimano 7-speed, 8-speed, 11-speed, and 15-speed, are introduced. The configuration of the gear mechanism and the control mechanism for each transmission hub is introduced. The clutching sequence table, mechanical components, and the operation principle of the gear-shifting mechanism for each transmission hub are also analyzed and compared with each other, and a design method is formulated to design the gear-shifting mechanism. Using the software-ANSYS to carry out the gear-shifting mechanism of the stress and deformation to evaluate the reliability and applicability. Finally, the transmission hub of embodiment design, with three types of speed control mechanism, we can get three 8-speed, three 12-speed, and three 16-speed transmission hub.
Shih, Po-Lun, and 施博倫. "Study on the Design Methodology of Multi-Speed Hub for Bicycles." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/10108742163155672223.
Full text國立中山大學
機械與機電工程學系研究所
91
A multi-speed drive hub is one of important components in transmission system. The purpose of this work is to develop a system methodology for the design of multi-speed bicycle drive hubs. First, analyse multi-speed drive hub patents to identify the basic characteristics and design requirement of multi-speed drive hub. Second, using a systematized mathod to synthesize the feasible gear trains. Third, a method is proposed to determine the feasible multi-speed sequence tables for each gear train. Fourth, an analytic method is formulated to synthesize the gear ratios and gear teeth according to a set of desired speed ratios. Fifth, design and dispose governors of multi-speed drive hubs. The results of this work will be benefit to the development and design of multi-speed bicycle drive hubs.