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Journal articles on the topic 'Passive system design'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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1

LI, Yu, Tao ZHOU, Liang LIU, Juan CHEN, Xiaoyan WEI, and Bangyang XIA. "ICONE23-1297 Program Design for CSR1000 Passive Residual Heat Removal System." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2015.23 (2015): _ICONE23–1—_ICONE23–1. http://dx.doi.org/10.1299/jsmeicone.2015.23._icone23-1_141.

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2

Gupta, S. D., and A. K. Musla. "System Design Aspects of Passive Night Sights." Journal of Optics 19, no. 1 (March 1990): 50–53. http://dx.doi.org/10.1007/bf03549211.

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3

Burgazzi, Luciano. "Thermal–hydraulic passive system reliability-based design approach." Reliability Engineering & System Safety 92, no. 9 (September 2007): 1250–57. http://dx.doi.org/10.1016/j.ress.2006.07.008.

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4

Hoan Tran, Duc, Bruno Sareni, Xavier Roboam, Eric Bru, and André De Andrade. "Robust design of a passive wind turbine system." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 31, no. 3 (May 4, 2012): 932–44. http://dx.doi.org/10.1108/03321641211209816.

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5

Fan, Yi Hua, Ying Tsun Lee, Chung Chun Wang, and Yi Lin Liao. "Passive Magnetic Bearing Design for a Small Wind Generator System." Applied Mechanics and Materials 145 (December 2011): 174–78. http://dx.doi.org/10.4028/www.scientific.net/amm.145.174.

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A passive magnetic thrust bearing for a small vertical wind generator system is considered in this paper. The passive magnetic bearing is designed to reduce the axial load of the rotor system. The load capacity of the passive magnetic bearing is analyzed by finite element analysis software. From the simulation results, a suitable solution for the passive magnets of the test wind generator system is verified to be 225.6N with about a 2mm air gap. The experiment results show that a wind generator system with the additional passive magnetic bearing can start at a lower wind speed and transfers more power to the generator. The proposed hybrid bearing system can increase efficiency by 20%~50%, as compared with a traditional system supported by roller bearings at the same wind speed.

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6

Li, Jun Hua, Hong Wei Quan, and Xiu Yin Xue. "Analysis and Design of Simulation System for Passive Acoustic Senor Network." Applied Mechanics and Materials 533 (February 2014): 214–17. http://dx.doi.org/10.4028/www.scientific.net/amm.533.214.

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The simulation system for passive acoustic sensor network is an important part of information fusion system. Its main function is to simulate the detection process of acoustic sensor network and produce the simulation data which is needed for testing and evaluating the target tracking algorithms. For implementation of simulation system, the target motion model and the measurement model of passive acoustic sensor must be built, and a scenario will be defined in advance when it is running. This paper discussed the passive acoustic sensor network model and gave an information fusion system structure for passive acoustic sensor network. Then the basic principle of target detection for acoustic sensor is stated. Finally, we illustrated the operation process of a simulation system for passive acoustic sensor network.

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7

You, Hao, Yongjun Shen, Haijun Xing, and Shaopu Yang. "Optimal control and parameters design for the fractional-order vehicle suspension system." Journal of Low Frequency Noise, Vibration and Active Control 37, no. 3 (September 2018): 456–67. http://dx.doi.org/10.1177/0263092317717166.

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In this paper the optimal control and parameters design of fractional-order vehicle suspension system are researched, where the system is described by fractional-order differential equation. The linear quadratic optimal state regulator is designed based on optimal control theory, which is applied to get the optimal control force of the active fractional-order suspension system. A stiffness-damping system is added to the passive fractional-order suspension system. Based on the criteria, i.e. the force arising from the accessional stiffness-damping system should be as close as possible to the optimal control force of the active fractional-order suspension system, the parameters of the optimized passive fractional-order suspension system are obtained by least square algorithm. An Oustaloup filter algorithm is adopted to simulate the fractional-order derivatives. Then, the simulation models of the three kinds of fractional-order suspension systems are developed respectively. The simulation results indicate that the active and optimized passive fractional-order suspension systems both reduce the value of vehicle body vertical acceleration and improve the ride comfort compared with the passive fractional-order suspension system, whenever the vehicle is running on a sinusoidal surface or random surface.

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8

Mohan, R. S., S. Wang, O. Shoham, and G. E. Kouba. "Design and Performance of Passive Control System for Gas-Liquid Cylindrical Cyclone Separators." Journal of Energy Resources Technology 120, no. 1 (March 1, 1998): 49–55. http://dx.doi.org/10.1115/1.2795009.

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The performance of gas-liquid cylindrical cyclone (GLCC) separators can be improved by reducing or eliminating liquid carryover into the gas stream or gas carryunder through the liquid stream, utilizing a suitable liquid level control. In this study, a new passive control system has been developed for the GLCC, in which the control is achieved by utilizing only the liquid flow energy. A passive control system is highly desirable for remote, unmanned locations operated with no external power source. Salient features of this design are presented here. Detailed experimental and modeling studies have been conducted to evaluate the improvement in the GLCC operational envelope for liquid carryover with the passive control system. The results demonstrate that a passive control system is feasible for operation in normal slug flow conditions. The advantage of a dual inlet configuration of the GLCC is quantified for comparative evaluation of the passive control system. The results of this study could form the basis for future development of active control systems using a classical control approach.

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9

Weaver, Kimberly R., Kathleen M. Lagnese, and Robert S. Hedin. "TECHNOLOGY AND DESIGN ADVANCES IN PASSIVE TREATMENT SYSTEM FLUSHING." Journal American Society of Mining and Reclamation 2004, no. 1 (June 30, 2004): 1974–889. http://dx.doi.org/10.21000/jasmr0401974.

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10

WANG, Hong-Gang, Chang-Xing PEI, and Yun-Hui YI. "Energy Efficient Physical Layer Design for Passive RFID System." Chinese Journal of Computers 32, no. 7 (August 13, 2009): 1356–64. http://dx.doi.org/10.3724/sp.j.1016.2009.01356.

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11

Karameldin, Aly, Hassan M. Elsawy Temraz, and Nady Attia Ibrahim. "Beyond-Design-Basis-Accidents Passive Containment-Cooling Spray System." Nuclear Technology 136, no. 1 (October 2001): 1–13. http://dx.doi.org/10.13182/nt01-a3224.

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12

刘, 嘉维. "Design Overview on Passive Containment Cooling System of SMR." Nuclear Science and Technology 07, no. 04 (2019): 123–32. http://dx.doi.org/10.12677/nst.2019.74017.

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13

Wang, Bin, Li Jia Chen, Wei Li, Yuan Qing Zhao, and Jing Hui Qiu. "Methods of Low Passive Intermodulation Design." Applied Mechanics and Materials 532 (February 2014): 496–99. http://dx.doi.org/10.4028/www.scientific.net/amm.532.496.

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With the increasing of the transmitted power and improvement of the receiver sensitivity, passive intermodulation (PIM) problem become more and more harmful in high power wireless communication system. Combined with the existing physical mechanism research, this article summaries and analysises of the common solution of passive intermodulation, which provides a reference for low passive intermodulation design.

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14

Zhang, Xiao Liang, Jian Jun Liu, Jia Mei Nie, and Long Chen. "Design Principle and Method of a Passive Hybrid Damping Suspension System." Applied Mechanics and Materials 635-637 (September 2014): 1232–40. http://dx.doi.org/10.4028/www.scientific.net/amm.635-637.1232.

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This work presents an approach to realize hybrid damping passively on the basis of inerter-spring-damper system, and demonstrates a passive hybrid damping suspension system that offers the performances of skyhook and groundhook dampers, but without the need of an inertial frame. The design principle and method of the system are presented, and a full-car model is built to analyze and compare the performances of the conventional passive, ideal and passive hybrid damping suspensions. The results demonstrate that the ideal and passive hybrid damping suspensions have the quite consistent performance that they both can suppress body and wheel resonances. As a result, the presented suspension improves ride comfort and safety significantly. It therefore has a good comprehensive performance.

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15

Dovgun, Valery, Denis Shandrygin, Natalia Boyarskaya, and Valentina Andyuseva. "Passive Filter Design for Power Supply Systems with Traction Loads." E3S Web of Conferences 209 (2020): 07003. http://dx.doi.org/10.1051/e3sconf/202020907003.

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The purpose of the investigation is to analyze resonant modes in electric power systems that feed the traction load, to study the mutual influence of the traction network and the external power supply system. Simulation model of the power supply system with traction load, implemented with the Matlab/Simulink software package, is considered. The proposed model is used to study the influence of various parameters of the power supply system on resonant modes, including the length of lines, the short-circuit power of the external power supply system, and the spectral composition of locomotive currents. It is shown that the study of resonant modes should consider the traction power supply system and the external network as a single system. Its frequency characteristics depend on both the parameters of the traction network and the parameters of the external power supply system. The ways to improve technical characteristics of passive filtering systems (PFS) for traction railway networks due to the sustainable choice of passive filter configurations have been investigated. Different PFS that provide compensation for voltage distortions in both the traction and external network have been proposed. They provide the suppression of powerful low-frequency harmonics and the resonant mode damping in the traction network – transformer – external network system. Broadband filters of the 3-5 orders have been proposed to control the characteristics of the traction power supply system.

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16

Ali, Nurhalim Dani, Noveri Lysbetti M, Firdaus Firdaus, Rahyul Amri, and Edy Ervianto. "Passive Filter Design for Improving Quality of Solar Power." International Journal of Electrical, Energy and Power System Engineering 1, no. 1 (September 30, 2018): 11–16. http://dx.doi.org/10.31258/ijeepse.1.1.11-16.

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With the progress of industry, power electronic equipment is widely used in power system, it has produced serious harmonic distortion. It goes without saying that harmonic analysis is a very important subject in power system. The influence of harmonics dominant because it is permanent. This harmonic influence spread to energy systems, energy devices, and influential to the energy source. For that, it is necessary a tool that is able to overcome these problems so that the electric energy services are not compromised and the reliability was not reduced. This study how to harmonic analysis, total harmonic distortion, and identifying the inverter at a solar power plant 320WP in accordance with the IEEE 519-2014.

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17

Yang, Chengming, Qi Zhou, H. R. Karimi, and Huanqing Wang. "State-Feedback Sampled-Data Control Design for Nonlinear Systems via Passive Theory." Mathematical Problems in Engineering 2013 (2013): 1–12. http://dx.doi.org/10.1155/2013/230413.

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This paper investigates the problem of passive controller design for a class of nonlinear systems under variable sampling. The Takagi-Sugeno (T-S) fuzzy modeling method is utilized to represent the nonlinear systems. Attention is focused on the design of passive controller for the T-S fuzzy systems via sampled-data control approach. Under the concept of very-strict passivity, a novel time-dependent Lyapunov functional is constructed to develop passive analysis criteria and passive controller synthesis conditions. A new sampled-data controller is designed to guarantee that the resulting closed-loop system is very-strictly passive. These conditions are formulated in the form of linear matrix inequalities (LMIs), which can be solved by convex optimization approach. Finally, an application example is given to demonstrate the feasibility and effectiveness of the proposed results.

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18

Chang, Soon Heung, Sang Ho Kim, and Jae Young Choi. "Design of integrated passive safety system (IPSS) for ultimate passive safety of nuclear power plants." Nuclear Engineering and Design 260 (July 2013): 104–20. http://dx.doi.org/10.1016/j.nucengdes.2013.03.018.

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19

Zhang, Hong Kun, and Wen Jun Li. "Design of Vehicle Semi-Active Suspension System Control Unit." Applied Mechanics and Materials 220-223 (November 2012): 1995–99. http://dx.doi.org/10.4028/www.scientific.net/amm.220-223.1995.

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This paper researches on embedded system design based on MC9s12Dp256 microcontroller for vehicle semi-active suspension. The hardware design of suspension control unit (SCU) is introduced. The integrated control strategy which integrates Skyhook and MiniMax strategies is proposed. The hardware-in-the-loop simulation (HILS) test on a two-degree-of-freedom quarter car semi-active suspension system model is carried out. The functions of SUC are verified and the performance of passive suspension and semi-active suspension is compared. The simulation results indicate that the performance of SCU achieves design requirement. In comparison with passive system, the control effect of integrated control strategy can be improved in ride comfort and drive safety.

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20

Zhang, Zhi, Zhao Hui Zhang, Zhe Yuan Fan, Aqi Yan, Jian Zhang, Hong Tao Yang, and Jian Zhong Cao. "Mechanical Passive Compensation for Athermalisation Design of Infrared Optical System." Key Engineering Materials 552 (May 2013): 93–96. http://dx.doi.org/10.4028/www.scientific.net/kem.552.93.

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Optical equipments especially those for aerospace application are expected to work over a wide temperature range. The change of temperature could cause the refractive index change of infrared glass elements. Furthermore, it would lead to the defocus of the image surface and the performance degradation, so the method of temperature compensation must be adopted, which could make sure that optical system would adapt to the change of ambient temperature. A method of temperature compensation with mechanical passive compensation is briefly described, and an example is also given. The quality of image could be optimized through mechanical passive compensation,depending on the differences of metal and non-metallic thermal expansion coefficient. The results show that the optical system works stablely in the designed temperature range. It is of great importance to the athermalisation design of infrared optical system.

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21

Park, Jin-Gyun, Jae-Young Lee, Sang-Hyun Kim, and Sung-Rak Kim. "Optimal Design of Passive Gravity Compensation System for Articulated Robots." Transactions of the Korean Society of Mechanical Engineers A 36, no. 1 (January 1, 2012): 103–8. http://dx.doi.org/10.3795/ksme-a.2012.36.1.103.

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22

Ha, Huiun, Sangwon Lee, and Hangon Kim. "Optimal design of passive containment cooling system for innovative PWR." Nuclear Engineering and Technology 49, no. 5 (August 2017): 941–52. http://dx.doi.org/10.1016/j.net.2017.03.005.

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23

魏, 协宇. "Design Scheme Investigation of PWR Passive Residual Heat Removal System." Nuclear Science and Technology 05, no. 02 (2017): 84–93. http://dx.doi.org/10.12677/nst.2017.52012.

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24

Lenti, Roberto, Luigi Mansani, and Gianfranco Saiu. "Preliminary Accident Analysis to Support a Passive Depressurization System Design." Nuclear Technology 114, no. 2 (May 1996): 158–68. http://dx.doi.org/10.13182/nt96-a35246.

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25

Ogunsola, Oluwaseyi, Li Song, and Ying Wang. "Analysis of passive thermal storage opportunities for heating system design." Science and Technology for the Built Environment 22, no. 3 (January 5, 2016): 266–80. http://dx.doi.org/10.1080/23744731.2016.1130516.

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26

Osborne, R. W., Y. Bar-Shalom, P. Willett, and G. Baker. "Design of an Adaptive Passive Collision Warning System for UAVs." IEEE Transactions on Aerospace and Electronic Systems 47, no. 3 (July 2011): 2169–89. http://dx.doi.org/10.1109/taes.2011.5937290.

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27

Kuo, Y.-P., and N.-S. Pai. "Design of nonlinear passive suspension system using an evolutionary programming." Journal of Physics: Conference Series 96 (February 1, 2008): 012092. http://dx.doi.org/10.1088/1742-6596/96/1/012092.

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28

Niu, Ji Gao, Chen Xu Li, Xiao Li Shi, and Chun Hua Xu. "Design and Research of Passive Entry Control System for Vehicle." IOP Conference Series: Materials Science and Engineering 392 (August 3, 2018): 062123. http://dx.doi.org/10.1088/1757-899x/392/6/062123.

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29

Cortes, B., L. R. Araujo, and D. R. R. Penido. "Passive Filters Design Applied to an Electrical Submersible Pump System." IEEE Latin America Transactions 16, no. 7 (July 2018): 1992–99. http://dx.doi.org/10.1109/tla.2018.8447367.

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30

Song, Jie, Le Liu, Daxin Gong, Jue Wang, and Xiaoxiao Wang. "Study on the Design of Passive Containment Heat Removal System." Journal of Physics: Conference Series 1650 (October 2020): 022118. http://dx.doi.org/10.1088/1742-6596/1650/2/022118.

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31

Fang, Li Qing, Hong Kai Wang, and Kai Chen. "Design of Passive Acoustic Location System Based on Double Arrays." Advanced Materials Research 490-495 (March 2012): 1857–61. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.1857.

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The biggest advantage passive acoustic positioning system based on single array is that it has high performance on orientation. However, its positioning error is usually larger. Locating based on multi-array not only gives more information to enhance the locating accurate, but also can eliminate the blind area generated by single array. So its locating performance is better than single-base array. In this paper, taking the system of double arrays for instance, built a passive acoustic positioning system, gave the plan of the system, and designed the tests to compare the accuracy between the single array and double arrays. According to the tests, it further verified that locating system based on double arrays has higher accuracy than the system of single array. And it also has high value engineering.

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32

Li, Shengbo Eben, Jin-Woo Park, Jae-Won Lim, and Changsun Ahn. "Design and control of a passive magnetic levitation carrier system." International Journal of Precision Engineering and Manufacturing 16, no. 4 (April 2015): 693–700. http://dx.doi.org/10.1007/s12541-015-0092-3.

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33

Li, Jun Wei, Hai Yan Shen, and Huian Sun. "The Design of Neuro-Fuzzy Controller for Active Suspension System." Applied Mechanics and Materials 330 (June 2013): 673–76. http://dx.doi.org/10.4028/www.scientific.net/amm.330.673.

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A neuro-fuzzy control (NFC) system is developed to control the suspension system of vehicle due to its nonlinearity and parameter variations. A neural network (NN) is used to adjust the premise parameters and the consequent parameters in fuzzy logic control (FLC). Simulation results by using NFC are compared with those of the conventional PID controller and passive suspension system. Based on the simulation, it can be concluded that the neuro-fuzzy controller shows a good performance in both passenger comfort and vehicle handing in comparison to the conventional PID controller and passive suspension system.

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34

Zhou, Qi, Yabin Gao, Hongyi Li, and Hamid Reza Karimi. "Control Design for Discrete-Time Fuzzy Systems with Disturbance Inputs via Delta Operator Approach." Mathematical Problems in Engineering 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/724918.

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This paper is concerned with the problem of passive control design for discrete-time Takagi-Sugeno (T-S) fuzzy systems with time delay and disturbance input via delta operator approach. The discrete-time passive performance index is established in this paper for the control design problem. By constructing a new type ofLyapunov-Krasovskii function (LKF) in delta domain, and utilizing some fuzzy weighing matrices, a new passive performance condition is proposed for the system under consideration. Based on the condition, a state-feedback passive controller is designed to guarantee that the resulting closed-loop system is very-strictly passive. The existence conditions of the controller can be expressed by linear matrix inequalities (LMIs). Finally, a numerical example is provided to demonstrate the feasibility and effectiveness of the proposed method.

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35

Liao, W. H., and K. W. Wang. "Characteristics of Enhanced Active Constrained Layer Damping Treatments With Edge Elements, Part 2: System Analysis." Journal of Vibration and Acoustics 120, no. 4 (October 1, 1998): 894–900. http://dx.doi.org/10.1115/1.2893917.

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This paper presents some important characteristics of enhanced active constrained layer damping (EACL) treatments for vibration controls. Specific interests are on understanding how the edge elements will influence the active action authority, the passive damping ability, and their combined effects in EACL. Analysis results indicate that the edge elements can significantly improve the active action transmissibility of the current active constrained layer damping (ACL) treatment. Although the edge elements will slightly reduce the viscoelastic material (VEM) passive damping, the EACL will still have significant damping from the VEM. Combining the overall active and passive actions, the new EACL with sufficiently stiff edge elements not only could achieve better performance with less control effort compared to the current ACL system, but also could outperform the purely active system. With careful analysis, we can map out the required critical edge element stiffness for successful designs. In addition, analysis also shows that the EACL treatment is a more robust design. That is, it could outperform both the purely active and passive systems throughout a much broader design space than the current ACL configuration. With these desirable characteristics, the EACL could be used to realize an overall optimal active-passive hybrid system.

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36

Zhang, Yapei, Suizheng Qiu, Guanghui Su, wenxi Tian, Jianhua Cao, Donghua Lu, and Xiangang Fu. "ICONE19-43763 DESIGN AND TRANSIENT ANALYSES OF PASSIVE EMERGENCY FEEDWATER SYSTEM OF CPR1000 : PART I: AIR COOLING CONDITION." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2011.19 (2011): _ICONE1943. http://dx.doi.org/10.1299/jsmeicone.2011.19._icone1943_296.

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37

Zhang, Fuhai, Legeng Lin, Lei Yang, and Yili Fu. "Design of an Active and Passive Control System of Hand Exoskeleton for Rehabilitation." Applied Sciences 9, no. 11 (June 3, 2019): 2291. http://dx.doi.org/10.3390/app9112291.

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Aiming at stroke patients’ hand rehabilitation training, we present a hand exoskeleton with both active and passive control modes for neural rehabilitation. The exoskeleton control system is designed as a human–robot interaction control system based on field-programmable gate array (FPGA) and Android mobile terminal with good portability and openness. Passive rehabilitation pattern based on proportional derivative (PD) inverse dynamic control method and active rehabilitation pattern based on impedance method, are established respectively. By the comparison of the threshold value and the force on the fingertip of the exoskeleton from the sensor, the automatic switch between active and passive rehabilitation mode is accomplished. The hand model is built in Android environment that can synchronize the movement of the hand. It can also induce patients to participate in rehabilitation training actively. To verify the proposed control approach, we set up and conduct an experiment to do the passive rehabilitation mode, active rehabilitation mode, and active plus passive mode experimental researches. The experiment results effectively verify the feasibility of the exoskeleton system fulfilling the proposed control strategy.

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38

Hsieh, Ming-Shium, Chin-Sheng Chen, and Kuan-Sheng Chien. "INTELLIGENT PASSIVE CONTROL FOR LOWER LIMB REHABILITATION SYSTEM." Transactions of the Canadian Society for Mechanical Engineering 37, no. 3 (September 2013): 1023–33. http://dx.doi.org/10.1139/tcsme-2013-0088.

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This paper proposes the design and control of continuous passive motion (CPM) machine based on constraint-induced movement therapy (CIMT). First, the dynamic model of the CPM machine is derived for further controller design by the principal of virtual work. Then, an intelligent sliding-mode control (ISMC) system which involved recurrent Hermite neural network (RHNN) estimator to estimate the unknown external disturbance and uncertainty is proposed to track the angular position and velocity of the CPM machine.

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39

Eggleston, Robert G., and Randall D. Whitaker. "Work Centered Support System Design: Using Frames to Reduce Work Complexity." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 46, no. 3 (September 2002): 265–69. http://dx.doi.org/10.1177/154193120204600310.

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We have been developing user interface clients as fully integrated support systems. A Work Centered Support System aids work by using direct and indirect, passive and active methods. An important property of WCSS systems is the use of form representations as passive devices to help reduce work complexity while simultaneously aid users in adaptive problem solving. Based on our experience implementing the design of three WCSSs we have distilled a set of three form-based design principles that help insure a work-centered perspective is expressed in the interface and that aid problem solving. These principles connect problem-solving objects with work domain objects at different levels of abstraction, utilize a first-person work ontology, and organize information selection and layout based on problem relationships. This paper describes the principles and uses illustrations from our designs to indicate how they reduce work complexity.

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40

Uddin, Nur. "Optimal Control Design of Active Suspension System Based on Quarter Car Model." JURNAL INFOTEL 11, no. 2 (June 30, 2019): 55. http://dx.doi.org/10.20895/infotel.v11i2.429.

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The optimal control design of the ground-vehicle active suspension system is presented. The active suspension system is to improve the vehicle ride comfort by isolating vibrations induced by the road profile and vehicle velocity. The vehicle suspension system is approached by a quarter car model. Dynamic equations of the system are derived by applying Newton’s second law. The control law of the active suspension system is designed using linear quadratic regulator (LQR) method. Performance evaluation is done by benchmarking the active suspension system to a passive suspension system. Both suspension systems are simulated in computer. The simulation results show that the active suspension system significantly improves the vehicle ride comfort of the passive suspension system by reducing 50.37% RMS of vertical displacement, 45.29% RMS of vertical velocity, and 1.77% RMS of vertical acceleration.

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41

Guo, Wentao, Weizhong Guo, Jeffrey Q. Ge, and Feng Gao. "A novel method to model the effect of environmental constraint of geometry in the mechanism design." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 20 (January 5, 2018): 3751–66. http://dx.doi.org/10.1177/0954406217742934.

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Few studies have considered the effect of environmental constraints throughout the entire design process of mechanical systems. Neglecting such effect might lead to misunderstanding the kinematic performance of the mechanical systems. In our work, an environment-based design concept was proposed by using passive limbs to model and analyze geometrical constraints in each step of the theoretical design process. Redesigning of a thrust system in a shield machine is taken as an example for better demonstration of this design approach. A new equivalent model of the thrust system was synthesized by using passive limbs to express environmental constraints of geometry based on the shield behavior. The uniform kinematic model was developed for the integrated equivalent mechanism of the thrust system. The effectiveness of the passive limbs in expressing environmental constraints was then evaluated by kinematical analysis. A singularity analysis was performed to assess the consistency between the equivalent model and a real thrust system. The reachable angular workspace was also analyzed to demonstrate the influence of the passive limbs as an example of environment-based parameter design. A motion simulation was performed to demonstrate the improvement of the forward kinematics by using the passive limbs to solve the singularity problem. A dexterity performance index based on the proposed model was conducted to demonstrate the kinematical property of the thrust system.

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42

Zaier, Riadh, and A. Al-Yahmedi. "Design of Biomechanical Legs with a Passive Toe Joint for Enhanced Human-like Walking." Journal of Engineering Research [TJER] 14, no. 2 (June 30, 2017): 166. http://dx.doi.org/10.24200/tjer.vol14iss2pp166-181.

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This paper presents the design procedure of a biomechanical leg, with a passive toe joint, which is capable of mimicking the human walking. This leg has to provide the major features of human gait in the motion trajectories of the hip, knee, ankle, and toe joints. Focus was given to the approach of designing the passive toe joint of the biomechanical leg in its role and effectiveness in performing human like motion. This study was inspired by experimental and theoretical studies in the fields of biomechanics and robotics. Very light materials were mainly used in the design process. Aluminum and carbon fiber parts were selected to design the proposed structure of this biomechanical leg, which is to be manufactured in the Mechanical Lab of the Sultan Qaboos University (SQU). The capabilities of the designed leg to perform the normal human walking are presented. This study provides a noteworthy and unique design for the passive toe joint, represented by a mass-spring damper system, using torsion springs in the foot segment. The working principle and characteristics of the passive toe joint are discussed. Four-designed cases, with different design parameters, for the passives toe joint system are presented to address the significant role that the passive toe joint plays in human-like motion. The dynamic motion that is used to conduct this comparison was the first stage of the stance motion. The advantages of the presence of the passive toe joint in gait, and its effect on reducing the energy consumption by the other actuated joints are presented and a comparison between the four-designed cases is discussed.

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Dong, Mingzhi, Fabio Santagata, Robert Sokolovskij, Jia Wei, Cadmus Yuan, and Guoqi Zhang. "3D system-in-package design using stacked silicon submount technology." Microelectronics International 32, no. 2 (May 5, 2015): 63–72. http://dx.doi.org/10.1108/mi-11-2014-0050.

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Purpose – This study aims to provide a flexible and cost-effective solution of 3D heterogeneous integration for applications such as micro-electro-mechanical system (MEMS) applications and smart sensor systems. Design/methodology/approach – A novel 3D system-in-package (SiP) based on stacked silicon submount technology was successfully developed and well-demonstrated by the fabrication and assembly process of a selected smart lighting module. Findings – The stacked module consists of multiple layers of silicon submounts which can be designed and fabricated in parallel. The bonding and interconnecting process is quite simple and does not require complicated equipment. The 3D stacking design offers higher silicon efficiency and miniaturized package form factor. The submount wafer can be assembled and tested at the wafer level, thus reducing the cost and improving the yield. Research limitations/implications – The embedding design presented in this paper is applicable for modules with limited number of passives. When it comes to cases with more passive devices, new process needs to be developed to achieve fast, inexpensive and reliable assembly. Originality/value – The presented 3D SiP design is novel for applications such as smart lighting, Internet of Things, MEMS systems, etc.

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Jahmeerbacus, M. I., and K. M. S. Soyjaudah. "Design of a Microcontroller-Based Passive Standby Uninterruptible Power Supply." International Journal of Electrical Engineering & Education 38, no. 4 (October 2001): 330–37. http://dx.doi.org/10.7227/ijeee.38.4.6.

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This paper describes the design of a microcontroller-based passive standby Uninterruptible Power Supply (UPS), where the student applies a top-down systems approach to produce a working system. Such a project involves hardware-software co-design for realizing the relatively large number of detection, protection and control functions within the UPS.

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Gorabal, S. V., S. N. Kurbet, and K. K. Appukuttan. "Design and Evaluation of Hydro-Pneumatic Friction Damper Suspension System." International Journal of Manufacturing, Materials, and Mechanical Engineering 1, no. 4 (October 2011): 65–74. http://dx.doi.org/10.4018/ijmmme.2011100105.

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Perceived comfort level and ride stability are the two most important factors in the evaluation of suspension system in a mobile vehicle. It is extremely difficult to simultaneously maintain a high standard of vehicle ride, handling and body control in the vehicle by using conventional passive suspension system. However, the use of active suspensions would result in better comforts than the passive ones. This paper presents the design and analysis of a pneumatic friction damper and hydro-pneumatic friction damper. A non-linear quarter car model is developed, which includes pneumatic actuation by pressure regulation. The performance of the proposed model was assessed in terms of level of vibration reduction. Simulations on a prototype model show that the proposed system has good performance and robustness.

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Paul, Partha, Chetan Ingale, and Bishakh Bhattacharya. "Design of a vibration isolation system using eddy current damper." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 4 (May 10, 2013): 664–75. http://dx.doi.org/10.1177/0954406213489408.

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This article aims at modeling, analysis and design of a passive vibration isolation system using a magnetic damper with high efficiency and compactness. The experimental set-up was developed for a single degree-of-freedom vibration isolation system, where the damper consists of two elements: an outer stationary conducting tube made up of copper and a moving core made up of an array of three ring-shaped neodymium magnets of Nd–Fe–B alloy separated by four block cylinders made of mild steel that are fixed to a steel rod. The generation of eddy currents in the conductor and its resistance causes the mechanical vibration to dissipate heat energy. The vibration response of the system is obtained starting from a low-frequency range. The proposed magnetic damper achieves a maximum transmissibility value less than two for a natural frequency that is less than 10 Hz and the excitations at higher frequencies are successfully isolated. Numerical and experimental studies were carried out for a range of system parameters which show that isolators based on magnetic damping could be very effective for passive vibration isolation. Further, a theoretical model for an active isolation system is proposed in order to reduce the transmissibility at resonance. It is envisaged that the combined active–passive eddy current damper could be effectively used for vibration isolation.

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Wibowo, Pristisal, Solly Aryza Lubis, Hermansyah, Hamdani, and Zuraidah Tharo. "Smart Home Security System Design Sensor Based on Pir and Microcontroller." International Journal of Global Sustainability 1, no. 1 (October 24, 2017): 67. http://dx.doi.org/10.5296/ijgs.v1i1.12053.

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Technological developments are so rapid at this time to make people want always to be creative and trigger to create something new which can be applied and can use quickly and practically and control from close range and distance. In this research how to design home security system using PIR sensor (Passive Infra Red) based on microcontroller. Where this safety will work if the PIR (Passive Infra Red) sensor detects any human being that does not want to enter into the house, and then the micro controller process and instructs cell phone 1 to send an alarm signal in the form of SMS (Short Message Service).

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Huang, Song Lin, and Jian Zhong Cui. "The Design of Passive RFID Reader System Based on MF RC500." Advanced Materials Research 1022 (August 2014): 135–38. http://dx.doi.org/10.4028/www.scientific.net/amr.1022.135.

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RFID is a technology that uses radio frequency signals coupled to the space (alternating magnetic or electromagnetic), to achieve the purpose of non-contact transfer of information and automatic identification. In this paper, RFID reader system is designed based on the MF RC500. Compared with the automatic identification technology such as the barcodes, magnetic cards and IC cards, The RFID reader has many outstanding advantages: firstly, it is safe and suitable for high security terminal. The second, a plurality of electronic tags can be recognized simultaneously. The third, there is no mechanical wear. The fourth, it is convenient to use with non-contact operation and without human intervention when identifying.

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Lv, Xing, Minjun Peng, Xiao Yuan, and Genglei Xia. "Design and analysis of a new passive residual heat removal system." Nuclear Engineering and Design 303 (July 2016): 192–202. http://dx.doi.org/10.1016/j.nucengdes.2016.03.020.

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Belokonov, I. V., I. A. Timbai, and E. V. Barinova. "Design Parameters Selection for CubeSat Nanosatellite with a Passive Stabilization System." Giroskopiya i Navigatsiya 28, no. 1 (2020): 81–100. http://dx.doi.org/10.17285/0869-7035.0025.

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