The Open Electrical & Electronic Engineering Journal

2015, 9 : 625-631
Published online 2015 November 11. DOI: 10.2174/1874129001509010625
Publisher ID: TOEEJ-9-625

Pulse-Width Modulated Amplifier for DC Servo System and Its Matlab Simulation

Ma Xiaocheng , Zhang Haotian , Cheng Yiqing , Zhu Lina and Wu Dan
School of Overseas Education, Nanjing University of Posts and Telecommunications, Jiangsu, China.

ABSTRACT

This paper introduces a mathematical model for Pulse-Width Modulated Amplifier for DC Servo Motor. The relationship between pulse-width modulated (PWM) signal and reference rotation speed is specified, and a general model of motor represented by transfer function is also put forward. When the input signal changes, the rotation speed of the servo motor will change accordingly. By changing zeros and poles, transient performance of this system is discussed in detail, and optimal ranges of the parameters is recommended at the end of discussion.

Keywords:

Pulse-Width Modulated Amplifier, DC Servo Motor, Duty Cycle, Transient Performance.