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Dissertations / Theses on the topic 'DC motor speed'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Xu, Aidong. "Microprocessor controlled novel 4-quadrant DC-DC converter." Thesis, Loughborough University, 1992. https://dspace.lboro.ac.uk/2134/19477.

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The thesis describes a novel 4-quadrant DC-DC converter, supplied by a 28V DC voltage source, with an output voltage which may be continuously varied between +180V and -180V DC. A prototype 1.2kW DC-DC converter was designed and built, with emphasis given to the optimization of both the converter size and efficiency. This was achieved by means of a computer-based simulation study, which determined the optimal switching frequency and the size of the inductors and capacitors while maintaining a high unit efficiency. Mos-Gated Bimos switches, which feature the advantages of both mosfets and bipol

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2

Xu, Ke. "An input-output approach to series DC motor speed control." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq47120.pdf.

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3

Ashraf, Ali Junaid. "DC Motor Speed Control via Fuzzy / Pole Placement / PI Controller." Thesis, Högskolan Dalarna, Elektroteknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:du-5514.

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This report presents a new way of control engineering. Dc motor speed controlled by three controllers PID, pole placement and Fuzzy controller and discusses the advantages and disadvantages of each controller for different conditions under loaded and unloaded scenarios using software Matlab. The brushless series wound Dc motor is very popular in industrial application and control systems because of the high torque density, high efficiency and small size. First suitable equations are developed for DC motor. PID controller is developed and tuned in order to get faster step response. The simulati

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4

Mahmoud, M. El-S. "A microprocessor thyristor-controlled DC drive incorporating regenerative braking." Thesis, University of Bradford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355222.

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5

Mhango, Landson Manase Caron. "High power density, high speed, three phase brushless permanent magnet DC motor." Thesis, University of East London, 2010. http://roar.uel.ac.uk/2608/.

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This thesis describes a development of a high power density, high-speed 3-phase permanent magnet brushless dc motor developed specifically for use in aircraft and defence applications. The drive is essentially intended for low power, high-speed application and it incorporates an integral electronic controller. Special attention is paid to the geometry of the rotor assembly. The development of high power density permanent magnet machines has had several unsuccessful attempts by distinguished researchers. These past attempts made use of the concept of flux focusing technique which provides the a

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6

Lee, Shiyoung. "Effects of Input Power Factor Correction on Variable Speed Drive Systems." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/26493.

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The use of variable speed drive (VSD) systems in the appliance industry is growing due to emerging high volume of fractional horsepower VSD applications. Almost all of the appliance VSDs have no input power factor correction (PFC) circuits. This results in harmonic pollution of the utility supply which could be avoided. The impact of the PFC circuit in the overall drive system efficiency, harmonic content, magnitude of the system input current and input power factor is particularly addressed in this dissertation along with the development of analytical methods applicable to the steady-state an

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7

Al-Tayie, Jawad K. "Speed and temperature estimation in the brushed DC motor and cage induction motor using the extended Kalman filter." Thesis, University of Newcastle Upon Tyne, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299658.

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8

Elkhomri, Othman. "DSP IMPLEMENTATION OF DC VOLTAGE REGULATION USING ADAPTIVE CONTROL FOR 200 KW 62000 RPM INDUCTION GENERAT." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2926.

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The thesis discusses the development of closed loop system to control the DC voltage for 200 kW induction generator rated at a speed of 62000 RPM under different load conditions. The voltage regulation has been implemented using PI controller. A gain scheduling control algorithm has been developed to select the appropriate controller gains with respect to the generator load. Further, a relationship between the generator loads and the controller gains has been established. This relationship has been modeled using adaptive control technique to vary the gains automatically at any load condition.

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9

Shehada, Ahmed. "Novel Multilevel Converter for Variable-Speed Medium Voltage Switched Reluctance Motor Drives." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/85111.

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A novel multilevel converter that is especially suited for high speed multi-megawatt switched reluctance motor drives operating at the medium voltage level is presented. The drive is capable of variable speed, four-quadrant operation. Each phase leg of the converter contains an arbitrary number of cascaded cells connected in series with the phase winding. Each cell contains a half-bridge chopper connected to a capacitor. The converter is named the cascaded chopper cell converter. The modular nature of the converter with the ability to add redundant cells makes it very reliable, which is a key

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10

Yao, Yue. "Power Loss Modelling and Implementation of Permanent Magnet Synchronous Motor Drive under Variable Current Excitation." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/14281.

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In recent times, researchers show a growing interest in the control of permanent magnet synchronous motor, which is superior to conventional induction motor in several performance and efficiency aspects. Particular attention is given to the brushless dc motor (BLDC), as it is gaining popularity in low to medium power applications including adjustable speed drive and electric vehicle. Most works pertaining to BLDC control focus on dynamic performance improvement. However, limited works have been reported for BLDC efficiency optimisation. From an energy perspective, maximum efficiency operation

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11

Green, Clayton R. "MODELING AND TEST OF THE EFFICIENCY OF ELECTRONIC SPEED CONTROLLERS FOR BRUSHLESS DC MOTORS." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1459.

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Small electric uninhabited aerial vehicles (UAV) represent a rapidly expanding market requiring optimization in both efficiency and weight; efficiency is critical during cruise or loiter where the vehicle operates at part power for up to 99% of the mission time. Of the four components (battery, motor, propeller, and electronic speed controller (ESC)) of the electric propulsion system used in small UAVs, the ESC has no accepted performance model and almost no published performance data. To collect performance data, instrumentation was developed to measure electrical power in and out of the ESC

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12

Úlehla, Martin. "Mikrokontrolery pro BLDC motory." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2008. http://www.nusl.cz/ntk/nusl-235900.

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Master thesis deals with solutions of BLDC motors (brushless DC motors) control. It analyses microcontrollers and electronic components suitable for BLDC motor controllers under conditions of serial production. It mentions some common problems in practical aplication like dynamic motor braking, synchronization, recuperation and constant revolutions.

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13

Baratieri, Cassio Luciano. "Controle de velocidade sensorless de motores brushless DC submetidos a variações periódicas de carga." Universidade Federal de Santa Maria, 2011. http://repositorio.ufsm.br/handle/1/8493.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This master thesis presents a sensorless speed control drive of Brushless DC motors used in reciprocating compressors. These compressors cause periodic load torque variations on the motor, consequently mechanical vibrations and acoustic noise are presented as well. As a result, a discrete speed controller based on the internal model principle is proposed. This controller aims to track the speed reference and to reduce the periodic torque disturbances caused by the compressor. The proposed controller consists of a rotor position and

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14

Januška, Adam. "Model laboratorního pohonu pro výukové účely." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413132.

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This thesis is focused on simulation of laboratory stand located on University of technology in Brno which is containing DC and asynchronous motor. This thesis includes mathematical model of DC motor, regulator of current, regulator of speed and DC convertor. It also contains model of asynchronous squirrel cage motor and models for scalar and vector control. Whole simulation is calculated in Simulink which is part of program Matlab.

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Zdařil, Tomáš. "Regulátor otáček pro střídavé motory." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219772.

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The goal of the thesis was to design and create one-way speed controler for brushless DC motors, that is used in air modeling. The circuit is controlled by the Atmel AVR. As power unit for motor is used Li–pol accumulator. The controller is equipped with BEC to power the receiver and allows monitoring of current consumption and voltage on the accumulator. Measured data can be upload to a PC where they can be displayed by RegulatorPC in graphical form.

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Šandera, Tomáš. "Třífázový střídač pro napájení vysokootáčkového asynchronního motoru." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-318175.

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The master’s thesis deals with design and realization of three-phase inverter for experimental high speed asynchronous motor with a mechanical power of 6 kW. The thesis deals with the design of the individual components of the DC link. The thesis describes the selection of suitable capacitors in the DC link. There is also a complete simulation of the inverter in the Matlab Simulink program. Part of the thesis is also the design and realization of printed circuit boards of this inverter.

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17

Valle, Rodolfo Lacerda. "Acionamento de um motor síncrono de ímãs permanentes sem escovas visando aplicação em veículos elétricos." Universidade Federal de Juiz de Fora (UFJF), 2013. https://repositorio.ufjf.br/jspui/handle/ufjf/4161.

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Janeček, Jan. "Řízení pohybů dvouramenného žonglovacího stroje." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230105.

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The diploma thesis is a part of the project Intelligent double arm juggling machine. The project is divided into two diploma thesis. This thesis deals with the motion control of juggling arms. Information about hardware and software resources used in this project is in the first part of thesis. There is explanation of the control loop, explanation of used communication protocols and implementation of program proceeding in the second part of thesis.

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Valle, Rodolfo Lacerda. "Controlador preditivo aplicado na regulação das correntes de um motor CC de ímãs permanentes sem escovas de baixa indutância." Universidade Federal de Juiz de Fora (UFJF), 2017. https://repositorio.ufjf.br/jspui/handle/ufjf/4085.

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Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-04-18T15:37:21Z No. of bitstreams: 1 rodolfolacerdavalle.pdf: 15632691 bytes, checksum: 70a89dc2e4e38eb468aa2013be66ab1f (MD5)<br>Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-04-19T11:31:54Z (GMT) No. of bitstreams: 1 rodolfolacerdavalle.pdf: 15632691 bytes, checksum: 70a89dc2e4e38eb468aa2013be66ab1f (MD5)<br>Made available in DSpace on 2017-04-19T11:31:54Z (GMT). No. of bitstreams: 1 rodolfolacerdavalle.pdf: 15632691 bytes, checksum: 70a89dc2e4e38eb468aa2013be66ab1f (MD5) Previous is

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Ede, Jason David. "High-speed permanent magnet brushless DC motors." Thesis, University of Sheffield, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.719807.

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21

Samir, Mourad. "Etude d'une plate-forme biaxiale en rotation destinee a l'etude dynamique de la fonction equilibration chez l'homme." Toulouse 3, 1986. http://www.theses.fr/1986TOU30111.

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22

Libra, Jaroslav. "Řízení pohonů mobilního robotu Minidarpa." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218389.

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The main task of this master’s thesis is to design circuits for feedback control of the main drives Minidarpa robot. It contains the description of power-driven mobile robot control theory and the DC motor. The second part deals with the design options of the control module and its mechanical design. The last part of the proposal made cascade speed control with current loop by using optimal module and the symmetric optimum methods.

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23

Šoupal, Ondřej. "Programování mikrokontrolérů c2000 v programu MATLAB/Simulink." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413221.

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The aim of this thesis is to explore possibilities of rapid control prototyping, describe the concept of creating the software application in MATLAB/Simulink environment with use for development kit Texas instruments LaunchPad and create an application for DC and induction motor control in this environment. This work describes the application for unipolar/bipolar control H-Bridge of power converter for DC motor, measurement of output currents, speed and its displaying in real time using serial control interface. This thesis also desribes scalar and vector control of induction motor. All softwa

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24

Yang, Ke-Chin, and 楊克勤. "Remote Fuzzy Control in DC Motor Speed." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/49051352679318697856.

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碩士<br>國立海洋大學<br>機械與輪機工程學系<br>89<br>This paper presents a remotely fuzzy control in DC motor speed monitoring system with LabVIEW and Matlab. We use fuzzy controller to adjust parameters, in order to get the optimal speed response. First, the membership functions are defined according to motor dynamic mode, and use Matlab to construct fuzzy controller. Using Fuzzy PID system and Linear Fuzzy Controller (training by Adaptive Network-base Fuzzy Inference System, ANFIS) respectively construct the controller of the monitoring system. The difference of the two controllers at the speed response is di

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Chen, Wen-Chung, and 陳文鍾. "A Fuzzy Speed Controller for DC Motor." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/13881298188740691512.

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碩士<br>國立海洋大學<br>電機工程學系<br>85<br>The main purpose of this thesis is to study the design of a fuzzy speedcontroller for the direct current(DC) motor and the use of geneticalgorithms(GAs) to fine tune the parameters of fuzzy control rulesfor obtaining better system responses. First we build up a preliminary setof fuzzy control rules by analyzing the system step response. The basedon the state space model of the system, the parameters of the preliminaryset of fuzzy control rules are adjusted us

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Kumar, Anant, Shreerang Pradeep Munsh, Mohammed Rehan Memon, and Sitanshu Mishra. "Speed control of DC motor using IGBT." Thesis, 2007. http://ethesis.nitrkl.ac.in/4165/1/Speed_Control_of_DC_motor_using_IGBT.pdf.

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DC Motor speed control is carried out by use of Four Quadrant Chopper drive. Insulated Gate Bipolar Transistors are used for speed control of the motor and the IGBT triggering is carried out by use of PWM converters under various loading conditions and by varying armature voltage and field voltage. The above mentioned experiment was again carried out using Thyristors and a comparative study was made.

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Sethy, Badal Kumar, and Abhishek Kumar Sinha. "Speed Control of DC Motor Using Chopper." Thesis, 2013. http://ethesis.nitrkl.ac.in/5224/1/109EE0309.pdf.

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The speed control of separately excited dc motor is carried out by varying the armature voltage for below rated speed and by varying field flux to achieve speed above the rated speed. This thesis presents the speed control methodology by varying armature voltage using chopper by providing control signal to the switches. Speed can be controlled from below and up to rated speed .The firing circuit of chopper receives signal from controller and variable voltage is given to the armature of dc motor according to the desired speed .There are two controllers we are using here one is speed controller

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Hsu, Pang-Hung, and 許邦泓. "Low Speed Control of Brushless DC Motor Drives." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/47347838119785404265.

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碩士<br>南台科技大學<br>電機工程系<br>97<br>Comparing to the conventional DC motor and induction motor, the brushless DC motor (BLDCM) has superior merits, such as high torque, high performance, extensive working speed range, and without commutator and brush. BLDCM has been widely used in the industrial applications because of its cost and efficiency. Normally, Hall-effect sensor is used to detect the rotor position for commutation. However, the Hall sensor is low-resolution especially at low speeds and sensitive to the temperature. Therefore, the sensorless control scheme is considered in the thesis. In t

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Wang, Sheng Kuei, and 王聖魁. "Digital Filter Design for DC Motor Speed Control." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/15287684672341960332.

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CHEN, JIA-QIN, and 陳家欽. "Fully digital speed control of DC brushless motor." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/42406978536539499253.

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Shafeeq, K. Mohamed. "Position Sensorless Speed Control of Brushless DC Motor." Thesis, 2018. http://ethesis.nitrkl.ac.in/9889/1/2018_MT_216EE5316_MShafeeq_K_Position_.pdf.

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This project work presents the position sensor less speed control of brushless DC motor, brushless DC motors has the similar speed and torque characteristics of conventional DC motors, instead of commutating brushes brushless DC motor uses an electronic commutation system. To obtain the commutation instants the position of permanent magnet rotor position should detect, normally we use a position sensor to detect the position. instead of using the position sensor to detect the rotor position here in this project we are using the zero crossing instances of the back EMF to get commutation instanc

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KUMAR, NAWRATNA. "IMPLEMENTATION OF NARMA-L2 NEUROCONTROLLER FOR SPEED REGULATION OF SERIES CONNECTED DC MOTOR." Thesis, 2015. http://dspace.dtu.ac.in:8080/jspui/handle/repository/14364.

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ABSTRACT Series connected DC Motor Drive (SCDM) has been the most suitable drive for electric rapid transit railway system and electric vehicles, characterized by speed and torque control using PID based choppers. However there are some serious problems underlying such as nonlinear switching, variable nature of load and difficulty in exact mathematical model representation. These may cause poor dynamic response of the system. To improve the performance of the system these nonlinearities are to be properly incorporated in system representation and appropriate model of SCDM to be consider

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Tirkey, Prem Sai, and Naganaveen Kumar Chiruvolu. "Speed Control and Regenerative Braking of Bidirectional DC-DC Converter Fed Permanent Magnet DC Motor." Thesis, 2015. http://ethesis.nitrkl.ac.in/7099/1/Speed_Tirkey_2015.pdf.

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This thesis mainly emphasis on speed control and regenerative braking of PMDC motor fed by a bidirectional DC-DC converter. The main objective is to increase the efficiency of the motor and also the power flow in both directions which also further improves efficiency during regenerative braking mode. Different types of bidirectional DC-DC converters have been studied. As we all know that during the buck mode operation of converter regenerative braking occurs which in turn charges the battery whereas in boost mode the battery supplies the required power to run the motor. So out of all the prese

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梁智淵. "Grey Predictor Applied to Speed Control of DC Motor." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/4nr5ew.

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碩士<br>國立交通大學<br>電機與控制工程系所<br>92<br>This thesis verifies the efficiencies of grey predictor on the prediction of the disturbances and the application to speed control of DC motor. Sliding-mode control is chosen here for speed control of DC motor because of its robustness of eliminating the matched disturbances. The traditional sliding-mode control has such property with the hypothesis that the upper bound of the disturbances is known. However, the upper bound of the disturbance is difficult to be measured or estimated exactly, and the system would be unstable if the upper bound is not well esti

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Chang, Ying-De, and 張英德. "Intelligent Control of High-Speed Sensorless DC Brushless Motor." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/91660712395754464813.

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碩士<br>國立交通大學<br>電機與控制工程系所<br>95<br>In this thesis, the fuzzy logic controller (FLC) for sensorless brushless dc (BLDC) motor was proposed to synchronize the rotors with the stator windings commutation sequence to obtain the optimum efficiency of motor. There are two modules proposed in the speed control of BLDC motor, i.e. command and regulating modules. Command module is to find and issue commutation period and PWM duty cycle to the BLDC motor for desired speed. The regulating module is designed as a FLC and is used to regulate the speed of BLDC motor subject to disturbances, such as loading

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Chang, Wei-Yau, and 張維堯. "Brushless DC Motor Control Without Position and Speed Sensors." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/22123435011943354200.

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碩士<br>國立清華大學<br>動力機械學系<br>84<br>The thesis forcuses on sensorless design and speedontrol of brushless DC motor. The operation of brushless DCotor relies on position sensors to detect the rotor magneticole position, and then the proper commutation signal can bebtained. Besides, the speed sensor is needed to constituteor speed feedback loop. The first part of the thesis is totudy the sensorless algorithm to replace position and speedensors of motor. The second part is to apply digital phase-o

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Wei, Hsu-Chia, and 徐家偉. "DC Servo Motor Speed Control with Energy Saving Analysis." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/63447039402034344463.

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碩士<br>東南科技大學<br>機械工程研究所<br>101<br>This study designs a DC servo motor speed control system , and utilizes the method for energy saving effect。The PWM signal is applied to the DC drivers, and the inductance of DC motor affect the speed responses with PWM signals is investigated. A direct neural control (DNC) based on back propagation neural networks (BPN) with specialized learning architecture is applied to control and regulate the speed of DC servo motor. The common DNC system usually needs an emulator, but the proposed neural controller is treated as a speed regulator without the specified re

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Moghe, Prajakta S. "Zigbee based wireless adjustable speed drive system." Thesis, 2016. http://hdl.handle.net/1805/10857.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>This thesis proposes a remotely controlled motor drive system which is able to supply a regulated voltage for both DC and AC motors. The proposed system integrates two different technologies, each of which belongs to the field of wireless communications and semiconductor power electronics. The introduction highlights the literature review and technical contributions in these two electrical engineering fields. The pulse width modulated control algorithm for speed control is discussed in detail. Incorporating the zigbee wireless techno

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Valeri, Francesco. "Model reference adaptive speed control of a DC motor drive." Thesis, 1994. http://spectrum.library.concordia.ca/3688/1/MM01351.pdf.

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SHUMING, LIU, and 劉書銘. "Brushless DC Motor Sensorless Speed Control with Back-EMF Detection." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/2ey7w4.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>99<br>This thesis aims to implement the sensorless speed control system for brushless direct current (BLDC) motor with the Field Programmable Gate Array (FPGA) chip. It could determine the position of rotor according to the information of back electro motive force (back-EMF) without Hall sensor. This system use the analog to digital converter (ADC) to detect the back-EMF zero crossing points, then commute the motor. But the estimation for zero crossing points would be easily interfered by noise signals.The interference with noise could be reduced with some suitable

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Chiao, Tsu-Chi, and 焦子奇. "Optimal Design and Experimemt of High Speed DC Brushless Motor." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/59850002654345304915.

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碩士<br>國立臺灣大學<br>機械工程學系<br>85<br>DC brushless motors possess the merit of high efficiency, wide operation range, less noise, and widely used in many application field. In this paper, an optimal design technique is implemented on the high speed DC brushless motor design. In addition, the finite element models dealing with electromagnetic, heat transfer, and vibration analyses are also presented. According to the experiment, both calculation and finite element electromagnetic analysis are cons

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CHEN, SYUAN-TING, and 陳炫廷. "Design of DC Motor Speed Control Based on Touch Panel." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/95209626102597593818.

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Hsu, Chun-Wei, and 徐君偉. "Research on Speed-Feedback Single-Phase Brushless DC Fan Motor." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/13322880568796164741.

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碩士<br>淡江大學<br>電機工程學系碩士在職專班<br>104<br>This paper is to explore the new control way of single-phase brushless DC fan. It propose countermeasures to improve the fan operating conditions with speed-feedback-control. In consideration of the weakness in current brushless DC fan control way, this paper will present a new control method to exclude the risk that may occur in fan operation. We use an 8bit single chip microcontroller as the alternative solution to control fan speed, current stability, efficiency and safety. In order to make sure the process speed of microcontroller is fast enough to resp

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Mishra, Manish. "Speed Control of DC Motor Using Novel Neural Network Configuration." Thesis, 2009. http://ethesis.nitrkl.ac.in/245/1/10502014.pdf.

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This paper uses Artificial Neural Networks (ANNs) in estimating speed and controlling it for a separately excited DC motor. The rotor speed of the dc motor can be made to follow an arbitrarily selected trajectory. The purpose is to achieve accurate trajectory control of the speed, especially when the motor and load parameters are unknown. Such a neural control scheme consists of two parts. One is the neural identifier which is used to estimate the motor speed. The other is the neural controller which is used to generate a control signal for a converter. These two neural networks are trained

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Lai, Chiu-Ming, and 賴秋名. "The Speed Control of Sensorless Brushless DC Motor Using Fuzzy Controller." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/u4n53h.

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碩士<br>崑山科技大學<br>電機工程研究所<br>97<br>This thesis proposes the fuzzy controller to the speed control of sensorless brushless DC Motor (BLDC) based on digital signal controller dsPIC30F4011. The BLDC mainly uses inverter to substitute for carbon brush and commutator. Under the incentives of both energy and environmental protection, BLDC will substitute for DC motor and will become the drive component of high-efficiently environment-friendly product. In general, the BLDC can be divided into sensor drive and sensorless drive techniques. The sensor drive technique uses Hall sensors to detect rotor posi

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Yang, Zih-Yi, and 楊紫億. "Development of High Speed Control System for Brushless DC Motor Drives." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/59307782421576958173.

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碩士<br>國立臺灣科技大學<br>電機工程系<br>98<br>This thesis is concerned with the development of the control system for brushless dc (BLDC) motor in high speed applications. A control policy which combines pulse-amplitude modulation with pulse-width modulation is proposed to control the input voltage according to the speed command for BLDC motor drives. A dc-dc power converter is designed to change the voltage from 140~200 to 24~48 volt. The BLDC motor drives use three hall-effect sensors to detect rotor position and calculate motor speed for six-step square-wave and closed-loop control of speed. In this th

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Wang, Shun-Sheng, and 王順聖. "Implementation of Sensorless Speed Controlled Brushless DC Motor by Using dsPIC33FJ16MC304." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/91355476584814252387.

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碩士<br>崑山科技大學<br>電機工程研究所<br>102<br>The main purpose of this thesis is to design and implement sensorless speed controlled brushless DC motor based on control core dsPIC33FJ16MC304 and accompanied with Mitsubishi series PSS module IPM as the main inverter. The brushless DC motors have some outstanding characteristics, including high efficiency, high torque, non-commutation carbon brushes, characteristic curves which are like those of dc motors. Therefore, the brushless DC motors gradually be used in industrial and home appliances. Traditional way of brushless DC motor rotary angle is usually to

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廖志乾. "A Study of LabVIEW-Aided in DC Motor Speed Monitoring System." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/43844641998724842321.

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碩士<br>國立海洋大學<br>機械與輪機工程學系<br>88<br>This thesis presents a LabVIEW-aided PID controller designed to monitor DC motor speed. First, we scheme the hardware of PC counter to read out the pulses from encoder and acquired by the DAQ card to PC. By the LabVIEW-aided PID controller, the parameters , and are adjusted to control the motor speed. Meanwhile, the front panel will display the rpm, torque, power and response curve on the screen. The simulation results are quite match with the theoretical prediction for the behavior of the PID controller.

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Lin, Cheng-Tsung. "Speed Sensorless Control for Four-Switch Three-Phase Brushless DC Motor." 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2707200701541500.

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Lin, Cheng-Tsung, and 林正宗. "Speed Sensorless Control for Four-Switch Three-Phase Brushless DC Motor." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/41289516626194726741.

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博士<br>臺灣大學<br>電機工程學研究所<br>95<br>This dissertation proposes a novel asymmetric pulse width modulation (PWM) scheme for four-switch three-phase (FSTP) brushless dc (BLDC) motor drives. This PWM scheme not only achieves the BLDC motor using FSTP inverter, but also does not need any current sensor and complex algorithm, so it can make the lowest manufacture cost of the inverter. Furthermore, this dissertation proposes a novel commutation control for the FSTP BLDC motor drive without position sensor. This sensorless control detects the crossing point of two floating voltages, and estimates the comm

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