Distributed Control

This article discusses servo motion systems, which are motion control systems that combine hardware and software, have innumerable applications in compact modules. Some motion controllers operate on multiple platforms and buses, with units providing analog output to a conventional amplifier, as well as units that provide current control and direct pulse width modulation (PWM) output for as many as 32 motors simultaneously. There are amplifiers that still require potentiometers to be adjusted for the digital drives’ position, velocity, and current control. All major value-adding components of motion control systems will soon have to comply with the demands for faster controllers with high-speed multi axis capabilities supplying commands in multitasking applications.

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Torque and current control of high-speed motion control systems with sinusoidal-PMAC motors

IEEE/ASME Transactions on Mechatronics ◽

10.1109/tmech.2002.802729 ◽

2002 ◽

Vol 7 (3) ◽

pp. 369-377 ◽

Cited By ~ 4

Author(s):

Dong Sun ◽

J.K. Mills

Keyword(s):

Control Systems ◽

Motion Control ◽

High Speed ◽

Current Control

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Comparison of NURBS trajectory interpolation algorithms for high-speed motion control systems

2021 IEEE 19th International Power Electronics and Motion Control Conference (PEMC) ◽

10.1109/pemc48073.2021.9432561 ◽

2021 ◽

Author(s):

Krystian Erwinski ◽

Marcin Paprocki ◽

Gabriel Karasek

Keyword(s):

Control Systems ◽

Motion Control ◽

High Speed ◽

Interpolation Algorithms ◽

Trajectory Interpolation

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Dynamic vacuum pressure tracking control with high-speed on-off valves

Proceedings of the Institution of Mechanical Engineers Part I Journal of Systems and Control Engineering ◽

10.1177/0959651818780866 ◽

2018 ◽

Vol 232 (10) ◽

pp. 1325-1336 ◽

Cited By ~ 1

Author(s):

Gang Yang ◽

Kai Chen ◽

Linglong Du ◽

Jingmin Du ◽

Baoren Li

Keyword(s):

Mass Flow ◽

Pulse Width ◽

High Speed ◽

Pulse Width Modulation ◽

Sliding Mode ◽

Tracking System ◽

Vacuum Pressure ◽

Chamber Pressure ◽

Asymmetric Structure ◽

The Impact

A vacuum pressure tracking system with high-speed on-off valves is a discontinuous system due to the discrete nature of high-speed on-off valves. Chamber pressure changes in the system are determined by the mass flow rates during the processes of charging and discharging. Here, a sliding mode controller with an asymmetric compensator based on average mass flow rate is designed for accurate vacuum pressure tracking. The controller output signal is converted into the duty cycles of the high-speed on-off valves via a pulse width modulation pulsing scheme. Owing to the extreme asymmetry of the processes, an asymmetric structure comprising one high-speed on-off valve in the charging unit and three high-speed on-off valves in the discharging unit is applied to weaken the impact of asymmetry. In addition, an asymmetric compensator is also designed to modify the pulse width modulation pulsing scheme to further eliminate the asymmetry. Experimental results indicate that the proposed controller achieves better performance in pressure tracking with the asymmetric compensator overcoming process asymmetry and enhancing system robustness.

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A low power and high speed data transfer scheme with asynchronous compressed pulse width modulation for AS-memory

Digest of Technical Papers., Symposium on VLSI Circuits. ◽

10.1109/vlsic.1995.520672 ◽

2002 ◽

Cited By ~ 3

Author(s):

T. Yamauchi ◽

Y. Morooka ◽

H. Ozaki

Keyword(s):

Low Power ◽

Pulse Width ◽

High Speed ◽

Pulse Width Modulation ◽

Data Transfer ◽

Transfer Scheme ◽

High Speed Data

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High-speed three-dimensional shape measurement for dynamic scenes using bi-frequency tripolar pulse-width-modulation fringe projection

Optics and Lasers in Engineering ◽

10.1016/j.optlaseng.2013.02.012 ◽

2013 ◽

Vol 51 (8) ◽

pp. 953-960 ◽

Cited By ~ 145

Author(s):

Chao Zuo ◽

Qian Chen ◽

Guohua Gu ◽

Shijie Feng ◽

Fangxiaoyu Feng ◽

...

Keyword(s):

Pulse Width ◽

High Speed ◽

Pulse Width Modulation ◽

Three Dimensional ◽

Fringe Projection ◽

Shape Measurement ◽

Dynamic Scenes ◽

Dimensional Shape ◽

Three Dimensional Shape

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Integrating Phase-Shifted Pulse-Width Modulation to Model Predictive Current Control of Modular Multilevel Converters

2018 IEEE Energy Conversion Congress and Exposition (ECCE) ◽

10.1109/ecce.2018.8557902 ◽

2018 ◽

Cited By ~ 1

Author(s):

Dehong Zhou ◽

Shunfeng Yang ◽

Yi Tang

Keyword(s):

Pulse Width ◽

Pulse Width Modulation ◽

Current Control ◽

Multilevel Converters ◽

Modular Multilevel Converters

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Modeling and analysis of vector control systems for asynchronous motor

E3S Web of Conferences ◽

10.1051/e3sconf/202017801001 ◽

2020 ◽

Vol 178 ◽

pp. 01001 ◽

Cited By ~ 3

Author(s):

Viktor Meshcheryakov ◽

Tatyana Sinyukova ◽

Alexey Sinyukov ◽

Andrei Boikov ◽

Rustem Mukhametzhanov

Keyword(s):

Vector Control ◽

Control Systems ◽

Pulse Width ◽

Pulse Width Modulation ◽

Asynchronous Motor ◽

Evaluation Criteria ◽

Torque Ripple ◽

Modulation Method ◽

Asynchronous Electric Drive ◽

Vector Systems

The study aims at the analysis of vector control asynchronous electric drive systems. For comparison and evaluation, mathematical models of systems are implemented in the environment of simulation modeling Matlab Simulink. The evaluation criteria selected were: complexity of implementation, energy efficiency of the inverter, accuracy of speed maintenance, torque ripple, reaction speed of the system to disturbances from the side of the drive mechanism, impact on the supply network. Vector control systems by ensuring the maintenance of accuracy of the moment in the entire range of speed control are more widespread. The study of vector systems, the formation of the stator voltage vector in which is carried out using pulse-width modulation. The signal organization during the study was carried out by several methods. At the initial stage, the signal was formed due to relay-vector control in a closed loop for monitoring the instantaneous values of current errors without forced modulation; at the next stage of the study, the signal was generated using sinusoidal pulse-width modulation based on a comparison of control signals with some reference vector, the final stage became a spatial-vector modulation method.

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