A motor rotation speed determining circuit is provided, and a processing of generating motor driving waveform is switched in accordance with the motor rotation speed. A resolver signal is converted to a digital value by an R/D converter, and inputted to a resolver value correction computing circuit via an R/D conversion interface. A current value of a motor M is converted to a digital value by an A/D converter. The resolver value correction computing circuit computes a resolver correction value of the inputted digital signal and calculates positional data from a corrected resolver value. The motor control computing circuit computes a current instruction value from a motor current value subjected to digital conversion by the A/D converter and a motor current instruction value etc., and a motor waveform output circuit generates a motor driving waveform from the current instruction value and outputs the same to a power module PM.
Semiconductor integrated circuit device
2015-12-29
Patent
Electronic Resource
English
IPC: | G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / G05B Steuer- oder Regelsysteme allgemein , CONTROL OR REGULATING SYSTEMS IN GENERAL / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
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