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Journal articles on the topic 'Pulse motors'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Wang, Chun Guang, Hong Chao Liu, De Min Yang, and Cong Chen. "Study of Development Status and Future Development Proposals for Pulse Soild Rocket Motor." Applied Mechanics and Materials 110-116 (October 2011): 2354–58. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.2354.

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To speed the domestic research on double pulse motor,and specify the research direction,analyzed the pulse separation device (PSD) of external double pulse motors,classified them according to certain characteristics,expounded research status of domestic double pulse motor,pointed out problems in the study.With the future needs of the missile force,proposed suggestions of future development for domestic research on double pulse motor,and specified the research direction of it.

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2

Hasan, Athraa Sabeeh. "Simple, Low Cost, and Efficient Design of a PC-based DC Motor Drive." Journal of University of Babylon for Engineering Sciences 26, no. 9 (October 21, 2018): 1–14. http://dx.doi.org/10.29196/jubes.v26i9.1695.

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In industrial applications, requiring variable speed and load characteristics, the DC motor is the attractive piece of equipment; due to its ease of controllability. Pulse-width modulation (PWM) or duty-cycle variation methods are commonly used in speed control of DC motors. A simple, low cost, and efficient design for a control circuit uses the PWM to adjust the average voltage fed the DC motor is proposed in this paper. The objective of this paper is to illustrate how the DC motor's speed could be controlled using a 555 timer. This timer works like a changeable pulse width generator. The pulse width can be changed via relays to add or remove resistors in the timer circuit. Using relays enable the proposed circuit to drive higher-power motors. The designed circuit controls the speed of a Permanent Magnet PM DC motor by means of the parallel port of a PC; therefore, the user will be able to control the speed of the DC motor. C++ computer program is used to run the motor at four levels of speed. An interface circuit is used to connect the motor to the parallel port. PC based control software is chosen to get simplicity and ease of implementation.

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3

Harun, Nasrul. "PENGENDALIAN KECEPATAN MOTOR DC DENGAN METODA FUZZY LOGIC BERBASIS MIKROKONTROLLER." Elektron : Jurnal Ilmiah 1, no. 2 (August 18, 2018): 1–12. http://dx.doi.org/10.30630/eji.1.2.15.

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The Technology and information development involve production process in industries using microcontroller as a brain in control process. The number of control process with microcontroller using Fuzzy Logic method to get the function as is needed. Motors DC are used in some equipment as a driver, not only in small scale but also in huge scale. It used in low or high speed too. The way of controlled chosen depend on the function of DC motor movement. The another method is Pulse Width Modulation (PWM). This is an effective method to controlled DC motor. This method produces square pulses which have specific comparison between high pulse and low pulse. It is usual scale from 0% to 100%. In this research, both Fuzzy Logic method and Pulse Width Modulation (PWM) method base of microcontroller ATMega 8535, both are integrated to control lthe DC motor speed.

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4

Lu, Jinsheng, Qiang Li, Cheng-Wei Qiu, Yu Hong, Pintu Ghosh, and Min Qiu. "Nanoscale Lamb wave–driven motors in nonliquid environments." Science Advances 5, no. 3 (March 2019): eaau8271. http://dx.doi.org/10.1126/sciadv.aau8271.

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Achieving light-driven motions in nonliquid environments presents formidable challenges, because microsized objects experience strong dry adhesion and intend to be stuck to contact surfaces with great tenacity. Here, in air and vacuum, we show rotary locomotion of a micrometer-sized metal plate with ~30 nm thickness, revolving around a microfiber. This motor is powered by pulsed light guided into the fiber as a coordinated consequence of an optically excited Lamb wave on the plate and favorable configuration of plate-fiber geometry. The motor, actuated by designed light pulses, crawls stepwise with subnanometer locomotion resolution. Furthermore, we can control the rotation velocity and step resolution by varying the repetition rate and pulse power, respectively. A light-actuated micromirror scanning with 0.001° resolution is then demonstrated on the basis of this motor. It offers unprecedented application potential for integrated micro-opto-electromechanical systems, outer-space all-optical precision mechanics and controls, and laser scanning for miniature lidar systems.

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5

GRIDIN, Vladimir M. "Contactless DC Motors with Discrete Control of Current in the Armature Winding Sections Using the Rotor Position Feedback Signal." Elektrichestvo 3, no. 3 (2021): 60–64. http://dx.doi.org/10.24160/0013-5380-2021-3-60-64.

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The article considers contactless DC motors with discrete control of the current in the three- and two-section armature winding using the rotor position feedback signal by means of a converter containing six and four power transistors, respectively. The motors are additionally equipped with a pulse width modulator (PWM) and a rectifier of the rotor position sensor signals. In the PWM, the periodic line-to-line voltage is compared with the rectified sensor signals to produce periodic rectangular pulses with the duration depending on the rotor position, which close the power transistors. Since the motor torque without PWM and the rectified sensor signals vary in a sine wave manner with turning the rotor (i.e., in the same way), a lower motor torque pulsation is obtained. The sensor and PWM designs and operation are described, and the requirements for their output voltages are formulated. Expressions for the contactless DC motor electromagnetic torque and its limit values are obtained. It is established that the electromagnetic torque pulsation levels in the contactless DC motors with three- and two-section armature windings do not exceed 1 and 1.5%, respectively, which is significantly lower than the pulsation level in the well-known contactless motors (4%).

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6

Anton, Anton, and Tuti Angraini. "UNJUK KERJA DAN PEMANFAATAN INVERTER SEBAGAI PENGENDALI KECEPATAN MOTOR INDUKSI 3 PHASA." Elektron : Jurnal Ilmiah 5, no. 2 (December 13, 2013): 87–92. http://dx.doi.org/10.30630/eji.5.2.59.

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The Induction motors are found in industrial and domestic environments because of low cost of operation including, induction motors are widely used induction motor 1 phase and 3 phase. During operation of induction motors generally used at normal speed, but the specific purpose induction motors operated with variable speed. In order to obtain varying motor speed can be controlled using the inverter. The use of inverters here to give supplay voltage AC induction motor in which the magnitude of the frequency can be varied. Setting frequency of the inverter utilizing method pulse with modulation (PWM). The circuit used to build PWM, using Insulated Gate Bipolar Transistor (IGBT) technology. Values obtained variable frequency ranging from 4 Hz to 50 Hz, and acquired motor speed ranging from 12 rpm up to 1390 rpm.

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7

Y. Yousef, Ayman, and M. H. Mostafa. "Simulation and Implementation of Multiple Unipolar Stepper Motor Position Control in the Three Stepping Modes using Microcontroller." Indonesian Journal of Electrical Engineering and Computer Science 4, no. 1 (November 4, 2016): 29. http://dx.doi.org/10.11591/ijeecs.v4.i1.pp29-40.

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<p>This paper presents a multiple unipolar stepper motor position control system using microcontroller (MCU) in anticlockwise and clockwise directions. The open loop controller of the implemented position control system for the three stepping modes of operation has been designed and developed with three stepper motors and without position feedback. The MCU is programmed using flowcode software package to generate the pulse signals with the desired stepping sequences and step angles. These pulse signals are necessary to drive the three stepper motors in the three drive modes (wave-step, full-step, and Half-step) according to the control algorithm. Three devices of 8 Channel Darlington Driver (chip ULN2803) are used to drive the three stepper motors and provide them with the sufficient current. The position control system has been simulated using proteus design suite software package and the controller has been implemented using low cost PIC16F877A (MCU). A reliable and accurate position control of the stepper motor is achieved by this position control system. </p>

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8

Gong, Yu Fang, Yu Gong, and Xin Ying Li. "The Simulation Research and Modeling of Asynchronous Motor's Vector Control." Applied Mechanics and Materials 336-338 (July 2013): 484–88. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.484.

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Based on the analysis of the mathematical model of the three-phase asynchronous motor and sine pulse width modulation principle, According to the theory of asynchronous motors vector control , software is building simulation model of asynchronous motors vector control system according to the rotor flux in Matlab/Simulink, analysis dynamic characteristics of rotational speed, torque and stator current ,provided the simulation results of the control system, verify the vector control is effective and feasible.

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9

Dohmeki, Hideo, Hirofumi Satomi, and Takao Iwasa. "Basic Characteristics of 5Phase Cylindrical Linear Pulse Motors." IEEJ Transactions on Industry Applications 115, no. 6 (1995): 793–99. http://dx.doi.org/10.1541/ieejias.115.793.

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10

Parfenovich, O. N., and O. A. Kapitonov. "Transistor pulse-width voltage regulator for induction motors." Вестник Белорусско-Российского университета, no. 3 (2010): 119–27. http://dx.doi.org/10.53078/20778481_2010_3_119.

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11

Wiryajati, I. Ketut, A. D. Giriantari, Lie Jasa, and I. N. S. Kumara. "Speed Control Strategy for Three Phase Induction Machine Fed Inverter Base on Carrier Base Pulse Width Modulation (CBPWM)." International Journal of Engineering and Emerging Technology 5, no. 1 (July 27, 2020): 14. http://dx.doi.org/10.24843/ijeet.2020.v05.i01.p05.

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Abstract— An induction motors (IM) in many industries is used because it has several advantages, such as a very simple and strong construction, the price is relatively cheap, has good efficiency, power factor is quite good, and maintenance is easier. Besides the advantages of induction motors also have disadvantages, one disadvantage of induction motors is not being able to maintain a constant speed when there is a change in load. If the load changes, the speed of the induction motor will decrease. One method of regulating the speed of an induction motor presented in this study is the regulation of an induction motor using a carrier based PWM (CBPWM) inverter with the field oriented control (FOC) technique. The estimation of rotor rotation, torque and flux is done by carrier- based PWM technique which is given input voltage and stator current. To achieve the desired flux and torque, estimation is used as feedback in the control system. In this study, it will be simulated the induction motor speed regulation with a carrier base-based inverter using Matlab. The results obtained through simulation show the length of time to reach the reference speed for speeds of 1500 rpm and 1450 rpm is around 0.45 seconds. And THD average 2,675%.

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12

Ricci, Stefano, and Valentino Meacci. "Simple Torque Control Method for Hybrid Stepper Motors Implemented in FPGA." Electronics 7, no. 10 (October 7, 2018): 242. http://dx.doi.org/10.3390/electronics7100242.

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Stepper motors are employed in a wide range of consumer and industrial applications. Their use is simple: a digital device generates pulse-bursts and a direction bit towards a power driver that produces the 2-phase currents feeding the motor windings. Despite its simplicity, this open-loop approach fails if the torque load exceeds the motor capacity, so the motor and driver should be oversized at the expense of efficiency and cost. Field-Oriented closed-loop Control (FOC) solves the problem, and the recent availability of low cost electronics devices like Digital Signal Processors, Field Programmable Gate Arrays (FPGA), or even Microcontrollers with dedicated peripherals, fostered the investigation and implementation of several variants of the FOC method. In this paper, a simple and economic FOC torque control method for hybrid stepper motors is presented. The load angle is corrected accordingly to the actual shaft position through pulse-bursts and direction commands issued towards a commercial stepper driver, which manages the 2-phase winding currents. Thanks to the FPGA implementation, the control loop updates the electrical position every 50 μs only, thus allowing a load angle accuracy of −1/100 rad for a rotor velocity up to 750 rev/min, as shown in the reported experiments.

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13

Dewi, Rozlinda. "Efek Duty Cycle Pwm pada Pengendalian Kecepatan Motor BLDC 3 Phasa." Journal of Electrical Power Control and Automation (JEPCA) 1, no. 1 (June 28, 2018): 14. http://dx.doi.org/10.33087/jepca.v1i1.4.

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Nowadays almost all electric convertible equipments are in motion using Brushless Direct Current (BLDC) motors, because BLDC motors have high efficiency and energy density because the lack of brush makes BLDC motors reliable enough, maintenance is cheap and can be used for high speed. This research is more emphasized on the controller unit using DRV 11873 IC which has EVM (Evaluation Module) as strong magnetic induction enhancer in BLDC motor winding (stator) with Pulse Width Modulation (PWM) duty cycle mode, the result of research shows the relationship between the addition of duty cycle PWM and the addition of a large supply voltage V (V) given to the 3 phase Phas motor BLDC to the motor speed change (RPM). Through the calculation of coefficient of determination (R2) each experimental results between the change of power supply voltage (V) to the speed (RPM) obtained 0.998 and the calculation of coefficient of determination (R2) change duty cycle PWM signal to the speed (RPM) 0.996.

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14

Foti, Salvatore, Antonio Testa, Salvatore De Caro, Tommaso Scimone, Giacomo Scelba, and Giuseppe Scarcella. "Multi-Level Open End Windings Multi-Motor Drives." Energies 12, no. 5 (March 5, 2019): 861. http://dx.doi.org/10.3390/en12050861.

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A multi-level open-end winding converter topology for multiple-motor drives is presented featuring a main multi-level inverter processing the power delivered to the motors and an active filter based on an auxiliary two-level inverter. The main inverter operates at the fundamental frequency in order to achieve low switching power losses, while the active filter is Pulse Width Modulation (PWM) operated to suitably shape the motor currents. The proposed configuration features less phase current distortion than conventional multi-level inverters operating at the fundamental frequency, while achieving a higher efficiency compared to PWM multi-level inverters. Experimental results confirm the effectiveness of such a configuration on both multiple motors-single converter and multiple motor-multiple converter drives.

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15

Poska, A. J., A. Smilgevičius, and R. Rinkevičienė. "Mechatronic Systems with Linear Induction Motors of Dampers." Solid State Phenomena 113 (June 2006): 67–72. http://dx.doi.org/10.4028/www.scientific.net/ssp.113.67.

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The purpose of the paper is, from the view of system engineering, to investigate mechatronic systems with uncontrolled or pulse controlled dampers that are equipped with a linear induction motor (LIM), the secondary element of which appears as a moving element of a damper. The main technological parameters determining the requirements for linear induction drives applied in the automatic protection and technological process control systems were investigated. Methods to investigate electromagnetic, electromechanical and thermal dynamic processes at pulse control of large cross-area dampers were proposed, and application of results of the investigation was considered.

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16

Ding, Xiao Feng, and Hui Chang. "Analysis of Losses and Thermal in Induction Motors." Applied Mechanics and Materials 446-447 (November 2013): 503–8. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.503.

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This paper presents an investigation into the losses and thermal characteristics of induction motors operated from pulse width-modulated (PWM) voltage supply in comparison to that operated from sinusoidal voltage supply. It was concluded that due to the abundant harmonics in the PWM waveforms, significant losses are induced in the motor by the inverter supply. The temperature ascends correspondingly. Experiments were conducted with no load and with load conditions. The losses and thermal characteristics were calculated using finite element analysis (FEA) and validated by the experiments.

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17

Neiman, V. Yu, and A. A. Petrova. "Comparison of methods for forcing pulse linear electromagnetic motors." Russian Electrical Engineering 78, no. 9 (September 2007): 493–94. http://dx.doi.org/10.3103/s1068371207090106.

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18

Hoki, Kunihito, Masahiro Yamaki, and Yuichi Fujimura. "Chiral Molecular Motors Driven by a Nonhelical Laser Pulse." Angewandte Chemie International Edition 42, no. 26 (July 7, 2003): 2976–78. http://dx.doi.org/10.1002/anie.200250872.

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19

Dohmeki, Hideo, Hirofumi Satomi, and Takao Iwasa. "Basic characteristics of five-phase cylindrical linear pulse motors." Electrical Engineering in Japan 116, no. 5 (1996): 118–27. http://dx.doi.org/10.1002/eej.4391160511.

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20

Muttaqin, Adharul, Stefanus Dion Finnadi, Zainul Abidin, and Kakeru Araki. "FPGA based synchronous multi-channel PWM generator for humanoid robot." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 1 (February 1, 2021): 249. http://dx.doi.org/10.11591/ijece.v11i1.pp249-256.

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In this paper, synchronous multi-channel pulse width modulation (PWM) generator for driving servo motors of humanoid robot was proposed. In an application, the humanoid robot requires smooth and beautiful movement, therefore the PWM signal for each servo motor must be synchronized. Since microcontroller (slave) has no enough channels to generate synchronous PWMs for 32 servo motors, field programmable gate array (FPGA) was used as slave for the humanoid robot. The FPGA was controlled by microcontroller (master) using serial communication. Simulation results show the system can perform serial communication, synchronize, and convert data well. The system can also generate PWM simultaneously with accurate duty cycle and fix period of 20ms.

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21

Wang, Yi Wang. "The Development of DSP-Based FFU Motor Digital Variable Frequency Control System." Advanced Materials Research 694-697 (May 2013): 2172–75. http://dx.doi.org/10.4028/www.scientific.net/amr.694-697.2172.

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The variable frequency speed control is one of the most important issues for fan filter unit (FFU) system. A novel digital variable frequency control system for FFU motors were proposed and developed to decrease running losses, and improve the speed control effect and accuracy. The system uses high-performance digital signal processor (DSP) TMS320F2812 as the control core, which adopts a dedicated motor pulse width modulation (PWM) control module to achieve the FFU motors real-time online digital variable frequency control. The composition and working principle of control system were illustrated, the hardware and software design were illustrated in detail. Finally, the experimental results on control system prototype were given, which confirm the effectiveness and validity of the control strategy, and demonstrate that the proposed method can achieve accurate variable frequency speed control of FFU motors.

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22

AFANAS’YEV, Alexander A. "The Mathematical Models of Converter Fed Permanent Magnet Motors." Elektrichestvo 2, no. 2 (2021): 66–70. http://dx.doi.org/10.24160/0013-5380-2021-2-66-70.

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The mathematical models of converter fed permanent magnet motors written in the coordinate axes are considered. Owing to pulse-width modulation, the currents and voltages of the motors are assumed to be sinusoidal. In the models with two state equations, the stator current is represented only by its quadrature-axis component, and the variable load angle appears in explicit or implicit form. These equations are most close to the similar equations of dc commutator motors. Third-order equations contain both stator current components; the load angle in them is fixed as constant one or varies to maintain the unity power factor for an arbitrary load. The models constructed in the form of state equations of the appropriate order, which are implemented in the MathCad software, illustrate possible functional regimes of the motor and indicate the ways of their possible implementations using means known from the practice.

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23

Arias, Ricardo, Hernán Mediote, and Hernán Tacca. "Flash FPGA-Based Numerical Pulse-Width Modulator." Advances in Power Electronics 2011 (April 4, 2011): 1–6. http://dx.doi.org/10.1155/2011/215376.

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A pulse-width modulator to drive three-phase AC motors is described. It performs a numerical modulation technique, also known as optimum or calculated modulation, but, in order to reduce hardware resources, a hybrid approach merging that calculated modulation with proportional modulation is proposed. The modulator is tested in a flash-based field programmable gate array (FPGA) implementation.

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24

SANADA, MASAYUKI, SHIGEO MORIMOTO, and YOJI TAKEDA. "Z-θ MOTION ACTUATOR WITH INTERIOR PERMANENT MAGNET MOVER." Journal of Circuits, Systems and Computers 04, no. 04 (December 1994): 487–99. http://dx.doi.org/10.1142/s0218126694000284.

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The linear pulse motor (LPM) can operate in an open-loop control mode similar to a rotary stepper motor, and it has large thrust in small input power and volume comparing with other linear motors. We proposed a new cylindrical linear pulse motor with an interior permanent magnet mover (IPMM-LPM), which has no thrust imbalance theoretically. The IPMM-LPM has the same mover cross section in comparison with the permanent magnet synchronous motor. Therefore, by only making an addition of an armature winding for the synchronous motor to the IPMM-LPM, the IPMM-LPM has an ability of a rotary motion as well as linear motion. In this paper, the new Z-θ motion actuator, which not only has the ability of linear motion but also rotary motion, is proposed and basic characteristics are examined in detail based on calculated and experimental results. The proposed Z-θ motion actuator is useful for machine tools such as a lathe and so forth.

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25

Sun, Qi, Jun Zhou, and Zhi Lei Ge. "A New Pulse Modulator for Solid Propellant Attitude Control Motors." Advanced Materials Research 429 (January 2012): 292–97. http://dx.doi.org/10.4028/www.scientific.net/amr.429.292.

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Antimissile interceptors with the attitude control motors (ACM) were researched. For solid propellant ACM, a pulse frequency modulation scheme is proposed, which is based on conventional PWPF modulator. The modulator extends the application of modulation control method to solid propellant ACM, and integrates it with a feedback of thrust estimation which is decided by location and thrust interaction factors. The stability of the new modulator was analyzed by Lyapunov method and a stability margin was given. Simulations show that the stability margin is conservative, but acceptable. Interceptor simulations using the modulator indicate that this technique provides closer-to-linear actuation than conventional bang-bang thruster control methods.

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26

Shimode, Shin'ichi, Hajime Fujita, Hideo Nakazawa, and Ryoji Satoh. "Low noise drive methods for pulse motors in facsimile machines." Journal of the Acoustical Society of Japan (E) 17, no. 3 (1996): 127–38. http://dx.doi.org/10.1250/ast.17.127.

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27

Simonov, B. F., A. O. Kordubailo, V. Yu Neiman, and A. E. Polishchuk. "Processes in Linear Pulse Electromagnetic Motors of Downhole Vibration Generators." Journal of Mining Science 54, no. 1 (January 2018): 61–68. http://dx.doi.org/10.1134/s1062739118013353.

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28

Xu, Liang, Wenxiang Zhao, and Guohai Liu. "Improved SVPWM Fault-Tolerant Control Strategy for Five-Phase Permanent-Magnet Motor." Energies 12, no. 24 (December 5, 2019): 4626. http://dx.doi.org/10.3390/en12244626.

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Multiphase permanent-magnet motors have received a lot of attention in the past few years owing to the merits of high power density, high efficiency and high fault-tolerant capability. Particularly, high fault tolerance is very desirable for safety-critical applications. This paper proposes an improved space vector pulse-width modulation (SVPWM) fault-tolerant control for five-phase permanent-magnet motors. First, generalized five-phase SVPWM fault-tolerant control is deduced and analyzed based on single-phase open-circuit fault, thus obtaining various SVPWM fault-tolerant control strategies and yielding a greatly increased capacity to enhance fault-tolerant performance of motor. Then, an improved SVPWM fault-tolerant control strategy with increased DC bus voltage utilization and reduced current harmonics is proposed and compared with the traditional one. Last, effectiveness and superiority of the proposed control strategy is verified by both simulation and experimental results on a five-phase permanent-magnet motor.

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Kim, Ho-Jin, Hyung-Seok Park, and Jang-Mok Kim. "Expansion of Operating Speed Range of High-Speed BLDC Motor Using Hybrid PWM Switching Method Considering Dead Time." Energies 13, no. 19 (October 6, 2020): 5212. http://dx.doi.org/10.3390/en13195212.

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In vehicle electrical systems with limited battery power, the output torque and speed of high-speed brushless DC (BLDC) motors can decrease due to unstable and reduced supply voltage or manufacturing errors in the motor back electromotive force (EMF). This paper presents a method that can guarantee the output performance of an inverter through a control algorithm without a separate power supply system and DC-link voltage increase. The proposed control algorithm can increase the output torque and speed of a high-speed BLDC motor by using appropriate selection and change of the inverter’s pulse width modulation (PWM) control method. In this paper, the operation and electrical characteristics of various PWM methods of BLDC motors are analyzed, and the optimal PWM method for improving the control performance of high-speed BLDC motors is presented. In addition, the relationship between the switching frequency, dead time, and voltage utilization was mathematically analyzed. Based on the results of this analysis, the proposed control algorithm automatically changes the PWM switching mode at the point where the output torque and speed need to be extended. The effectiveness and feasibility of the control method proposed in this paper is verified through the experimental results on the designed and manufactured high-speed BLDC motor system for vehicles.

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30

Dietz, Daniel, and Andreas Binder. "Bearingless PM-synchronous machine with axial active magnetic bearing fed by zero-sequence current." e & i Elektrotechnik und Informationstechnik 138, no. 2 (February 25, 2021): 62–69. http://dx.doi.org/10.1007/s00502-021-00867-4.

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AbstractA novel inverter supply for bearingless PM-synchronous motors with magnetic suspension allows the reduction of the number of power electronic switches. Hence, all six motional degrees of freedom of bearingless AC machines may be controlled via 3-phase inverter topologies. In this paper, instead of a bearingless motor consisting of two half motors, one bearingless motor with an additional radial active magnetic bearing is treated. Bearingless machines with cylindrical rotors in contrast to double cone rotors generate – apart from the electromagnetic torque – only radial magnetic forces. Hence, an axial magnetic bearing is used.For this bearing, there is no need for a feeding converter bridge as the bearing coil is fed by the zero-sequence current of the feeding 3-phase inverters. The bearing coil is placed between the two star points of the motor winding. The zero-sequence current amplitude is adjusted by the 3-phase inverters via pulse width modulation. The feasibility of this kind of axial position control is proven by simulation as well as with an experiment with a 1 kW prototype motor up to 60000 min−1.

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31

Karabacak, Yusuf, and Ali Uysal. "An Embedded Controller Application with Regenerative Braking for the Electric Vehicle." Elektronika ir Elektrotechnika 26, no. 1 (February 16, 2020): 10–17. http://dx.doi.org/10.5755/j01.eie.26.1.25306.

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Regenerative braking is very important for increasing the total range of an electric vehicle. In this study, an embedded controller, including regenerative braking, is designed and implemented for an electric vehicle. Experimental studies are carried out on an electric vehicle driven by two in-wheel electric motors. In-wheel electric motors are preferred in light electric vehicles, since they are both highly efficient and supports regenerative braking. In our embedded controller application, the in-wheel electric motor is operated in both the motor mode and the regenerative braking mode. The in-wheel electric motor control embedded software is developed in the Matlab/Simulink environment. The developed software is embedded in the DSP STM32F407 microcontroller, which has ARM Cortex-M4 core. The in-wheel electric motor is controlled by a fuzzy logic controller in the motor mode, the in-wheel electric motor - in the regenerative braking mode. Different PWM (Pulse Width Modulation) ratios are applied to the wheel electric motor in the regenerative braking mode. The experimental data are recorded in real-time by transferring to a PC on the electric vehicle. The performance of the study is proven with experimental tests.

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32

Zhang, Xue Feng, Xue Wu Ji, and Feng Gao. "Torque Ripple Suppression of Brushless DC Motors with Non-Ideal Back EMF for EPS Applications." Advanced Materials Research 201-203 (February 2011): 1198–205. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.1198.

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The torque ripple of brushless dc (BLDC) motors at low rotation speeds is prominent, while in the majority of working time of the automotive electric power steering (EPS) system, the steering rate is low and the assistant motor runs at low rotation speeds. Therefore, to develop a high-performance EPS system with a BLDC motor, the problem of torque ripple at low rotation speeds must be solved. Otherwise, the steering feel will not be smooth. This paper proposed an algorithm based on BLDC motors’ essential torque formula combined with the back-EMF (Electromotive Force) waveform coefficient to modify the target current to suppress the torque pulsation effectively. Meanwhile, the commutation process of this type motor is very short. Therefore, the torque coefficient can be regarded as constant during the commutation intervals. A direct pulse-width modulation (PWM) control method considering phase resistances is analyzed with a unipolar PWM scheme to reduce the commutation torque ripple further. Finally, simulations and experiments are conducted to verify the effectiveness of this method.

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33

Harris, P. G., and A. De Champlain. "Experimental Database Describing Pulse-Triggered Nonlinear Instability in Solid Rocket Motors." Journal of Propulsion and Power 14, no. 4 (July 1998): 429–39. http://dx.doi.org/10.2514/2.5319.

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WADA, Masayoshi, Hideto SAITO, Hitoshi KITANO, Akihiro IIMURA, Takashi NAITO, and Takanobu HOSHINO. "Active-caster omnidirectional mobile system with pulse motors for working robot." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2018 (2018): 1A1—E05. http://dx.doi.org/10.1299/jsmermd.2018.1a1-e05.

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35

Razzaghi, Mohsen, and Jalal Nazarzadeh. "Optimum pulse-width modulated patterns in induction motors using Walsh functions." Electric Power Systems Research 35, no. 2 (November 1995): 87–91. http://dx.doi.org/10.1016/0378-7796(95)00992-2.

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Razzaghi, M., and J. Nazarzadeh. "Optimum pulse-width modulated patterns in induction motors using Walsh functions." Fuel and Energy Abstracts 37, no. 3 (May 1996): 194. http://dx.doi.org/10.1016/0140-6701(96)88709-1.

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Maznev, Alexander Sergeevich, Alexander Alexandrovich Kiselev, Vladimir Аndreevich Usov, and Аnnа Аndreevna Kalinina. "Prospects of improving technical and economic indicators of electric rolling stock." Transport of the Urals, no. 2 (2020): 57–64. http://dx.doi.org/10.20291/1815-9400-2020-2-57-64.

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The paper considers methods of improving technical and economic indicators of direct current electric rolling stock. The authors propose a scheme of electric drive with pulse converters that are controlled by instantaneous values of armature and exciting currents. The scheme provides the realization of regenerative and resistance braking on almost the entire speed range. The paper also presents frequency characteristics of converters at speed from 5 to 100 km/h and proposes a scheme of direct current electric locomotive with pulse regulation of voltage on three connections of traction motors. Moreover, the authors discuss a structure of autonomous voltage inverter with group switching and reduced number of fully controlled semiconductor devices and present methods to prevent wheelspin through changing their load on rails and excitement of traction motors.

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Zhou, Shao Qing, Cong Li Mei, Guo Hai Liu, Wen Tao Huang, and Dong Xin Shu. "ARM-Based Speed Regulating System for Asynchronous Motor." Advanced Materials Research 852 (January 2014): 686–91. http://dx.doi.org/10.4028/www.scientific.net/amr.852.686.

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Owing to their simple structure and stability, AC induction motors have been widely used in many fields. With the development of electronic devices, variable-frequency speed regulation system of the induction motor is widely used. This paper introduces an ARM chip controller LM3S818 from Texas Instruments in detail as a microprocessor of the variable frequency speed regulation system for asynchronous motor. The main circuit of AC-DC-AC Variable frequency way is adopted and the control system is based on Space Vector Pulse Width Module. The hardware structure and the design of software both are presented. And experimental results show the good performance in different frequency.

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Abu Hassan, Mohd Arif, Abdul Rahim Abdullah, Nurhazilina Bahari, and Muhammad Ihsan Mohd Sabri. "Efficiency Comparison of Trapezoidal and Sinusoidal Method for Brushless DC Motor Drive." Applied Mechanics and Materials 785 (August 2015): 248–52. http://dx.doi.org/10.4028/www.scientific.net/amm.785.248.

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This paper compares overall efficiency of trapezoidal BLDC motor which is excited by trapezoidal drive and sinusoidal drive. The different characteristics and performance of trapezoidal Brushless DC (BLDC) motor is formed by driving methods. Sinusoidal drive that excites trapezoidal BLDC motor generates greater maximum torque than trapezoidal drive. However, with regard to high frequency loss caused by a pulse width modulation (PWM) carrier and switching loss, the trapezoidal drive has potential to achieve higher efficiency than the sinusoidal drive. Thus, these two drive methods excite trapezoidal BLDC motor are compared to study the efficiency performance. The motors drives are simulated by using MATLAB and their efficiency are measured. The results show that the trapezoidal BLDC motor with trapezoidal drive has higher efficiency compared to trapezoidal BLDC motor with sinusoidal drive.

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Raji, Mordecai, Akeem Shokanbi, and Happy Monday. "Design of Ultra-low-end Controllers for Efficient Stepper Motor Control." MATEC Web of Conferences 160 (2018): 02003. http://dx.doi.org/10.1051/matecconf/201816002003.

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This paper lays emphasis on thedevelopment of low cost controllers for stepper motors in contrast to its resource limitations such as memory size, few I/O pins and computing power compared to High-end designs. The microchip AVR ATtiny45 microcontroller was employed alongside a redesigned (reduced-input pin count) pulse distribution circuit for two H-Bridge drivers. The motor can rotate in both directions as well as possible speed control. The concept of the motor control signals was modeled in Matlab/Simulink, firmware was written in Atmel AVRStudio development environment, while theoverall design was carried out in Proteus software followed by Hardware implementation. Total material cost is about $5 which would be less in commercial production cases.

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Khaychenko, I. A., V. V. Babenko, Yu V. Nefedov, and Anh Tu Ha. "Algorithm for reducing additional losses in asynchronous electric drives in plants with static power regulators." Proceedings of Tomsk State University of Control Systems and Radioelectronics 23, no. 4 (December 25, 2020): 93–98. http://dx.doi.org/10.21293/1818-0442-2020-23-4-93-98.

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The ways to reduce losses of electrical energy in power supply systems of industrial enterprises containing powerful semiconductor converters and asynchronous motors are considered. The source of additional electric power losses related to subharmonic nature of voltage fluctuations from operation of converters using the principle of frequency-pulse control is determined. The operation algorithm for thyristor switches of semiconductor converters is proposed, that provides reduction of electric power losses in asynchronous motors connected in parallel with powerful converters. The voltage graphs and currents of simulation model in operation modes of converters show the potential to increase energy efficiency of operation of a wide range of industrial objects with asynchronous motors, connected in parallel and having cyclically changing load.

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Golafshani, Mehdi, Mohammad Farshchi, and Hojat Ghassemi. "Effects of Grain Geometry on Pulse-Triggered Combustion Instability in Rocket Motors." Journal of Propulsion and Power 18, no. 1 (January 2002): 123–30. http://dx.doi.org/10.2514/2.5906.

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Casada, D. A., J. D. Kueck, H. Staunton, and M. C. Webb. "Efficiency testing of motors powered from pulse-width modulated adjustable speed drives." IEEE Transactions on Energy Conversion 15, no. 3 (2000): 240–44. http://dx.doi.org/10.1109/60.875487.

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Kusakabe, Chiharu, Yoshiro Tomikawa, Takehiro Takano, and Manabu Aoyagi. "Waveform of Driving Pulse Train to Prevent Metallic Sound of Ultrasonic Motors." Japanese Journal of Applied Physics 32, Part 1, No. 5B (May 30, 1993): 2408–11. http://dx.doi.org/10.1143/jjap.32.2408.

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W. Chung, K. T. Chau, S. "Servo Speed Control of Traveling-Wave Ultrasonic Motors Using Pulse Width Modulation." Electric Power Components and Systems 29, no. 8 (August 2001): 707–22. http://dx.doi.org/10.1080/153250001753182700.

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NISHIHORI, Kenji, Shigeru OKUMA, Yasuo ERYU, and Toshitaka SUGIMOTO. "Velocity Control of Ultrasonic Motors for Robot Arms by Pulse Width Modulation." Transactions of the Japan Society of Mechanical Engineers Series C 57, no. 538 (1991): 1956–60. http://dx.doi.org/10.1299/kikaic.57.1956.

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Yavin, Y. "Applications of stochastic differential games to the suboptimal design of pulse motors." Computers & Mathematics with Applications 26, no. 6 (September 1993): 87–95. http://dx.doi.org/10.1016/0898-1221(93)90120-k.

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Rom, Hanan, and Alon Gany. "Thrust control of hydrazine rocket motors by means of pulse width modulation." Acta Astronautica 26, no. 5 (May 1992): 313–16. http://dx.doi.org/10.1016/0094-5765(92)90077-v.

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Hsue, Albert Wen Jeng, and Chih Hung Chung. "Novel Jump Control for Debris Processes of Electrical Discharge Machining with Direct-Drive Spindle." Advanced Materials Research 97-101 (March 2010): 4178–81. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.4178.

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Owing to its low removal rate and debris ejection nature, EDM is a very slow machining process. A novel jump motion control for electrode in electrical discharge machining (EDM) equipped with dual linear motors (LmEDM) was proposed to release this debris efficiency point. The direct drive EDM and a novel pulse discriminator were developed. By introducing the discriminator to count effective discharge pulses, an EDM jump control was proposed. Experiments for verification of the EDM efficiency were conducted for 35 mm deep and thin EDM processes with 2 mm thin platelet. EDM efficiency of proposed jump control is verified to be four times over the traditional EDM.

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Salloux, Kurt, James Lim, Bruce Dunn, Pavel M. Chaplya, and Gregory P. Carman. "Rechargeable Lithium Batteries for Powering Piezoelectric Devices." Journal of Intelligent Material Systems and Structures 11, no. 12 (December 2000): 930–35. http://dx.doi.org/10.1106/36aj-tunu-ep89-8g73.

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A new, rechargeable, thick-film, polymer electrolyte, lithium battery using a high-energy density cathode material (vanadium pentoxide aerogel, 350 mAh/g) has been tested in a pulse-discharge mode of operation. Three separate 12 volt batteries were pulse-discharged through a piezoelectric stack actuator. Since motion rectification devices such as linear motors operate at elevated frequencies, the batteries were pulse-discharged at 10, 100, and 500 Hz. Multiple cycle, charge/discharge data is presented for the three batteries tested in this study. Additionally, a 6 volt battery was fabricated and used to power a piezoelectric actuator patch (chirp source) that was part of a damage detection system.

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