Title :
A phase/frequency-locked controller for stepping servo control systems
Author :
Li, Jung-chien ; Hsieh, Guan-Chyun
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Ocean Univ., Keelung, Taiwan
fDate :
4/1/1992 12:00:00 AM
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. 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 are all conducted. Computer simulation and experimental results indicate that the performance of the PLSS is close to the theoretical prediction. Some speed responses for 40-1000 r/min are examined in the real PLSS. A speed regulation of ±0.15 r/min was achieved. An adaptive line density selector can be used to improve the system performance
Keywords :
control engineering computing; digital control; digital simulation; phase control; servomotors; stepping motors; variable-frequency oscillators; voltage control; adaptive digital-pumped controller; adaptive line density selector; computer simulation; frequency-locked controller; phase locked controller; phase-controlled oscillator; phase-locked stepping servomechanism; speed regulation; stability; stepping servo control systems; voltage-controlled oscillator; Adaptive control; Digital control; Frequency; Modeling; Programmable control; Servomechanisms; Servomotors; Servosystems; Voltage control; Voltage-controlled oscillators;
Journal_Title :
Industrial Electronics, IEEE Transactions on
