Extended-resolution pulse-width modulation servomotor drive

Details Extended-resolution pulse-width modulation servomotor drive Extended-resolution pulse-width modulation servomotor drive

1996-10-31

1998-02-24

Masih, Karen

Electricity: motive power systems

Positional servo systems

Pulse-width modulated power input to motor

318600, 318254, 318138, 318439, G05B 1128

Patent

active

057214751

ABSTRACT:
Drivers (24, 26, and 28) in the controller for a motor (14) drive the motor in accordance with a pulse-width-modulation scheme in which each pulse-width-modulation cycle includes a positive interval and a negative interval so that the value of the filtered output is proportional to the difference in duration between the positive and negative intervals. The pulse-width-modulator cycle also includes dead times between the positive and negative intervals, and these dead times are varied so that a change in a positive interval's duration in a fixed-duration pulse-width-modulation cycle does not necessarily result in an opposite change in the negative interval's duration. Consequently, the value resolution for a system in which the pulse-width-modulation cycle is a given number of system clock periods can be finer than it would be if the dead-time interval's duration were fixed.

REFERENCES:
patent: 3879647 (1975-04-01), Hamilton et al.
patent: 4233591 (1980-11-01), Murata et al.
patent: 4488103 (1984-12-01), Morinaga et al.
patent: 4590457 (1986-05-01), Amir
patent: 4709416 (1987-11-01), Patterson
patent: 4742329 (1988-05-01), Yamada et al.
patent: 4901078 (1990-02-01), Goyal
patent: 4930060 (1990-05-01), Leonardi
patent: 5023535 (1991-06-01), Miller et al.
patent: 5177373 (1993-01-01), Nakamura
patent: 5216374 (1993-06-01), George et al.
patent: 5422597 (1995-06-01), Stengel et al.
patent: 5471505 (1995-11-01), Birangi et al.
patent: 5583402 (1996-12-01), Moisin et al.
patent: 5637971 (1997-06-01), Pratt

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