Design and implementation of a wavelet speed controller with application to micro‐permanent magnet synchronous motor drives

Abstract

The study proposes a wavelet controller design for micro-permanent magnet synchronous drive systems. A systematic wavelet control algorithm is proposed to obtain the fast responses, good load disturbance responses and satisfactory tracking responses for time-varying commands. The wavelet control algorithm can be applied for both the speed-loop control system and the position-loop control system. A digital signal processor, TMS 320F28335, is used to execute all control algorithms. As a result, the hardware is very simple. Experimental results validate the simulated waveforms and show the correctness and feasibility of the proposed method.

A Novel Strategy to Improve the Performance of Speed And the Currentloopsfor Servo Control

“…Firstly, a PI fuzzy controller was adapted to ensure the expected static accuracy and then the disturbance observer was used to obtain the compensation signal. A systematic wavelet control strategy was applied to improve the rapid of speed command responses [5]. The results verified the efficiency of the algorithm, but the tests were carried out for the micro PMSM only.…”

A Novel Method to Suppress Mid-Frequency Vibrations with a High Speed-Loop Gain for PMSM Control

“…Jong-Sun Ko presented a neural load torque compensation method to obtain better precision control [13]. Wan-Cheng Wang proposed a systematic wavelet control algorithm to obtain faster command responses and better load disturbance responses for the speed-loop control system or the position control system [14]. Experimental results verified the correctness of the proposed method.…”

Discrete wavelet packet transform based controller for liquid level system and its performance analysis

“…Here, the value of derivative gain has been taken to be zero. In (11), 'A' and 'D' represents the approximate and the detail signal at first level of decomposition respectively. Here, levels L = 2, 3, .…”

“…Khan et al also applied this multi resolution PID controller for precise speed control of IPM motor drive [10]. Another application of this controller is stated in [11] for speed control of micro permanent magnet synchronous drive. It is seen in [2], the high frequency noise is available from detailed level of DWT.…”