Dual Speed Control Scheme of Servo Drive System for a Nonlinear Friction Compensation

2006 ◽  
Author(s):  
Dong-Hee Lee ◽  
Jin-Woo Ahn ◽  
Young-Joo An
Keyword(s):  
Speed Control ◽  
Drive System ◽  
Friction Compensation ◽  
Nonlinear Friction ◽  
Servo Drive ◽  
Control Scheme ◽  
Servo Drive System ◽  
Dual Speed

scholarly journals Intelligent Permanent Magnet Motor-Based Servo Drive System Used for Automated Tuning of Piano

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6627
Author(s):  
Ying Zhou ◽  
Zuyu Wu ◽  
Yutong Wu
Keyword(s):  
Permanent Magnet ◽  
Closed Loop ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Drive System ◽  
Servo Drive ◽  
Speed Regulation ◽  
Control Scheme ◽  
Position Regulation ◽  
Servo Drive System

This paper presents an intelligent permanent magnet synchronous motor-based servo drive system used in automated piano tuning applications. The permanent magnet synchronous motor-based drives are able to improve the accuracy of the piano tuning process in comparison with the traditional direct-current motor-based and step motor-based servo drives. To explain the techniques, firstly, the structure and principles of the automated piano tuning devices with a surface-mounted permanent magnet synchronous motor-based drive system integrated are introduced, illustrating that it is feasible to implement the proposed piano tuning strategy. Secondly, the piano tuning devices have two functions: low-speed rotation and position holding. To ensure that the surface-mounted permanent magnet synchronous motor can rotate stably over the low-speed range with strong anti-interference capacity, a double closed-loop speed-regulation-based control scheme is employed. And to ensure high position control performance, a fuzzy-adaptive triple closed-loop position-regulation-based control scheme is employed. It terms of the control schemes, it deserves to be mentioned that main contributions include, firstly, the parameters of the proportional integral controllers in the double closed-loop speed-regulation structure is tuned relying on both stability and bandwidth analyses. Then, a fuzzy-adaptive proportional integral controller is specially-designed for the triple closed-loop position-regulation to adapt to the piano tuning applications. Simulation is conducted on a 20 rpm three-phase permanent magnet synchronous motor servo drive-based piano tuning system to validate the proposed piano tuning method and to verify the proposed control techniques.

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