Dr. Nguyen graduated from the Texas Tech University Health Science Center School of Medicine - Lubbock in 1997. He works in Baytown, TX and specializes in Family Medicine.
Larry B. Li - Plano TX Chinh D. Nguyen - Sunnyvale CA Masimiliano Brambilla - San Jose CA Eugene Lee - Cupertino CA Athos Canclini - Santa Clara CA
Assignee:
SGS-Thomson Microelectronics, Inc. - Carrollton TX
International Classification:
G05B 501 G05B 702
US Classification:
318590
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.