scispace - formally typeset
Search or ask a question
Topic

Servomotor

About: Servomotor is a research topic. Over the lifetime, 9852 publications have been published within this topic receiving 70506 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, a robust speed control system for DC servomotors based on the parametrization of two-degree-of-freedom controllers is proposed, which can dramatically improve the characteristics of the closed loop systems, i.e., the disturbance torque suppression performance and the robustness to system parameter variations, without changing the command input response.
Abstract: The authors propose a robust speed control system for DC servomotors based on the parametrization of two-degree-of-freedom controllers. The servosystems can dramatically improve the characteristics of the closed loop systems, i.e. the disturbance torque suppression performance and the robustness to system parameter variations, without changing the command input response. The excellent control performances obtained during laboratory experiments by using a microprocessor-based controller are shown. >

701 citations

Journal ArticleDOI
TL;DR: The speed regulation problem for permanent magnet synchronous motor (PMSM) servo system is studied and an improved PFC method, called the PFC+ESO method, is developed, which introduces extended state observer (ESO) to estimate the lumped disturbances and adds a feedforward compensation item based on the estimated disturbances to the P FC speed controller.
Abstract: The speed regulation problem for permanent magnet synchronous motor (PMSM) servo system is studied in this paper. In order to optimize the control performance of the PMSM servo system, the predictive functional control (PFC) method is introduced in the control design of speed loop. The PFC-based speed control design consists of two steps. A simplified model is employed to predict the future q -axis current of PMSM. Then, an optimal control law is obtained by minimizing a quadratic performance index. However, it is noted that the standard PFC method does not achieve a satisfying effect in the presence of strong disturbances. To this end, an improved PFC method, called the PFC+ESO method, is developed. It introduces extended state observer (ESO) to estimate the lumped disturbances and adds a feedforward compensation item based on the estimated disturbances to the PFC speed controller. Simulation and experiment comparisons are made for these PFC methods and proportional-integral method with antiwindup control method to verify the effectiveness of the proposed methods.

569 citations

Journal ArticleDOI
TL;DR: In this article, a sliding-mode control method based on one novel slidingmode reaching law (SMRL) is presented, which allows chattering reduction on control input while maintaining high tracking performance of the controller.
Abstract: In order to optimize the speed-control performance of the permanent-magnet synchronous motor (PMSM) system with different disturbances and uncertainties, a nonlinear speed-control algorithm for the PMSM servo systems using sliding-mode control and disturbance compensation techniques is developed in this paper. First, a sliding-mode control method based on one novel sliding-mode reaching law (SMRL) is presented. This SMRL can dynamically adapt to the variations of the controlled system, which allows chattering reduction on control input while maintaining high tracking performance of the controller. Then, an extended sliding-mode disturbance observer is proposed to estimate lumped uncertainties directly, to compensate strong disturbances and achieve high servo precisions. Simulation and experimental results both show the validity of the proposed control approach.

518 citations

Journal ArticleDOI
TL;DR: A new method employing two genetic algorithms (GA) is developed for solving the constraint optimization problem of an optimal disturbance rejection PID controller as a constrained optimization problem.
Abstract: This paper presents a method to design an optimal disturbance rejection PID controller. First, a condition for disturbance rejection of a control system-H/sub /spl infin//-norm-is described. Second, the design is formulated as a constrained optimization problem. It consists of minimizing a performance index, i.e., the integral of the time weighted squared error subject to the disturbance rejection constraint. A new method employing two genetic algorithms (GA) is developed for solving the constraint optimization problem. The method is tested by a design example of a PID controller for a servomotor system. Simulation results are presented to demonstrate the performance and validity of the method.

434 citations

Journal ArticleDOI
TL;DR: The performance of proportional-integral-derivative control, model reference adaptive control, and fuzzy controllers is compared in terms of steady-state error, settling time, and response time.
Abstract: Consideration is given to the possibility of applying fuzzy algorithms in a microprocessor-based servomotor controller, which requires faster and more accurate response compared with other industrial processes. The performance of proportional-integral-derivative control, model reference adaptive control, and fuzzy controllers is compared in terms of steady-state error, settling time, and response time. Limitations of fuzzy control algorithms are described. >

424 citations


Network Information
Related Topics (5)
Control theory
299.6K papers, 3.1M citations
92% related
Robustness (computer science)
94.7K papers, 1.6M citations
85% related
Voltage
296.3K papers, 1.7M citations
82% related
Electric power system
133K papers, 1.7M citations
81% related
Fuzzy logic
151.2K papers, 2.3M citations
81% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023139
2022316
2021128
2020244
2019334
2018394