Electricity: motive power systems – Positional servo systems – Digital or numerical systems
Patent
1990-05-11
1992-06-23
Ip, Paul
Electricity: motive power systems
Positional servo systems
Digital or numerical systems
318608, 318138, 318254, G05B 102
Patent
active
051246252
ABSTRACT:
A position control system equipped with a driving unit including a mover and a stator giving a relative moving force to the mover comprises a position detector for outputting polyphase alternating signals different in phase from each other, a carrier signal generator for generating carrier signals to be modulated by the signals thus outputted, a digital sample-holder for demodulating a position-angle information signal of the modulated carrier signals and a digital calculator for calculating a driving signal to the driving unit. Thus, the position control system makes it possible to provide with a high resolution positioning, low power consumption, high stiffness, prevention of out of stepping, and high speed and vibrationless settling.
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"Parameters Governing the Dynamic Performance of Permanent-Magnet Stepping Motors" (A, Hughes Proc. Sixth Annual Symposium of Incremental Motion Control System and Devices, 1977, pp. 39-47).
Ip Paul
Matsushita Electric - Industrial Co., Ltd.
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