Title :
A study on stepping servo control system by phase-locked technique
Author :
Li, Jug-Chien ; Hsieh, Guan-Chyun ; Jou, Ruey-Nian
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Ocean Univ., Keelung, Taiwan
fDate :
28 Oct-1 Nov 1991
Abstract :
A phase-controlled oscillator (PCO), composed of an adaptive digital-pumped controller (ADPC) and a voltage-controlled oscillator (VCO), is proposed as a novel stepping motor driver. Therefore, a phase-locked stepping servomechanism (PLSS) is established, and the PCO can provide an accurate and stable pulse train to adaptively drive the stepping motor. System modeling, analysis, stability investigation, design, and implementation were all conducted. Computer simulation and experiment results indicate that the performance of the PLSS is close to the theoretical prediction. Some speed responses for 40-1000 RPM are examined in a real PLSS. A good speed regulation of ±0.15 RPM is achieved. An adaptive line density selector can be used to improve the system performance
Keywords :
adaptive control; digital control; digital simulation; machine control; phase control; servomechanisms; stability; stepping motors; variable-frequency oscillators; voltage control; adaptive digital-pumped controller; adaptive line density selector; computer simulation; phase-controlled oscillator; phase-locked technique; stability; stepping servo control system; voltage-controlled oscillator; Adaptive control; Digital control; Modeling; Programmable control; Servomechanisms; Servomotors; Servosystems; Stability analysis; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1991. Proceedings. IECON '91., 1991 International Conference on
Conference_Location :
Kobe
Print_ISBN :
0-87942-688-8
DOI :
10.1109/IECON.1991.239356
