Speed Servo System Considering Voltage Saturation of Indiredt Vector Control System

Kiyoshi Ohishi; Emiko Hayasaka; Tetsuaki Nagano; Masaya Harakawa

doi:10.1541/ieejias.122.120

Kiyoshi Ohishi, Emiko Hayasaka, Tetsuaki Nagano, Masaya Harakawa

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JOURNAL FREE ACCESS

2002 Volume 122 Issue 2 Pages 120-127

DOI https://doi.org/10.1541/ieejias.122.120

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Published: February 01, 2002 Received: March 22, 2001 Available on J-STAGE: December 19, 2008 Accepted: - Advance online publication: - Revised: -
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Date of correction: December 19, 2008 Reason for correction: - Correction: ABSTRACT Details: Wrong : A robust servo system is important for performance improvement of motion control systems to several industry applications. Generally, these robust servo systems are constructed as PI controllers, H^∞ controllers and so on. These control systems have the output limitation concerning both the capacity of actuator and the safety of system. When a servo system with integral element has a large error input, it often leads to output saturation and sometimes a windup phenomenon takes place. Ordinarily, in order to overcome this problem, the conventional anti-windup approach is to stop integral and additional calculations of servo system. However, the speed servo system with the conventional anti-windup algorithm sometimes has an oscillated response, and moreover, the actual voltage limitation is carried out on the axis of three phase alternating current. This paper proposes both a new anti-windup algorithm considering the phase voltage saturation and a new phase compensation algorithm for the vector control system of induction motor. The experimental results and the numerical simulation results show that the speed servo system having the proposed algorithms regulates a motor speed smoothly and stably for a large and quick moto speed reference.
Right : A robust servo system is important for performance improvement of motion control systems to several industry applications. Generally, these robust servo systems are constructed as PI controllers, H^∞ controllers and so on. These control systems have the output limitation concerning both the capacity of actuator and the safety of system. When a servo system with integral element has a large error input, it often leads to output saturation and sometimes a windup phenomenon takes place. Ordinarily, in order to overcome this problem, the conventional anti-windup approach is to stop integral and additional calculations of servo system. However, the speed servo system with the conventional anti-windup algorithm sometimes has an oscillated response, and moreover, the actual voltage limitation is carried out on the axis of three phase alternating current. This paper proposes both a new anti-windup algorithm considering the phase voltage saturation and a new phase compensation algorithm for the vector control system of induction motor. The experimental results and the numerical simulation results show that the speed servo system having the proposed algorithms regulates a motor speed smoothly and stably for a large and quick motor speed reference.

Date of correction: December 19, 2008 Reason for correction: - Correction: PDF FILE Details: -

Abstract

A robust servo system is important for performance improvement of motion control systems to several industry applications. Generally, these robust servo systems are constructed as PI controllers, H^∞ controllers and so on. These control systems have the output limitation concerning both the capacity of actuator and the safety of system. When a servo system with integral element has a large error input, it often leads to output saturation and sometimes a windup phenomenon takes place. Ordinarily, in order to overcome this problem, the conventional anti-windup approach is to stop integral and additional calculations of servo system. However, the speed servo system with the conventional anti-windup algorithm sometimes has an oscillated response, and moreover, the actual voltage limitation is carried out on the axis of three phase alternating current. This paper proposes both a new anti-windup algorithm considering the phase voltage saturation and a new phase compensation algorithm for the vector control system of induction motor. The experimental results and the numerical simulation results show that the speed servo system having the proposed algorithms regulates a motor speed smoothly and stably for a large and quick motor speed reference.

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