Electricity: motive power systems – Positional servo systems – Multiple mode systems
Patent
1995-06-07
1998-03-03
Ro, Bentsu
Electricity: motive power systems
Positional servo systems
Multiple mode systems
318591, 318611, 318632, G05B 501, G05B 702
Patent
active
057239630
ABSTRACT:
A motor drive control circuit for operation in both linear and PWM modes includes a switchably connected compensation network. The compensation network has a capacitor that provides control loop compensation. To avoid transient effects during the settling time upon transitions from one mode to the other, the switch connecting the compensation network in the circuit is closed only during linear operation and not during PWM mode operation. When the switch is open, the capacitor holds a previously attained potential that is reapplied to the circuit when the switch is again closed.
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Brambilla Masimiliano
Canclini Athos
Lee Eugene
Li Larry B.
Nguyen Chinh D.
Galanthay Theodore E.
Jorgenson Lisa K.
Ro Bentsu
SGS-Thomson Microelectronics Inc.
Telfer Gordon H.
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