[Problem] An object of the present invention is to provide an electronic control unit where an external WDT can always normally detect an abnormality (a failure) to an MCU relatedto a BIST function and which can maintain safety of a system. [Means for solving the problem] The present invention is the electronic control unit that is controlled by the MCU via an inverter constituted by a semiconductor switching device, comprises an external watch dog timer (an external WDT) to detect an abnormality of the MCU, a reset circuit to reset the MCU when the external WDT detects the abnormality of the MCU, and an ON/OFF control section to turn a gate of the semiconductor switching device on or off in accordance with the external WDT, the inverter is stopped by turning the gate off via the ON/OFF control section when the external WDT is a disable state, and when the abnormality of the MCU is not detected in an enable state to which the external WDT transits from the disable state, the inverter is driven by turning the gate on via the ON/OFF control section, and when the abnormality of the MCU is detected, the inverter is stopped by turning the gate off via the ON/OFF control section and the MCU is reset by the reset circuit.
ELECTRONIC CONTROL DEVICE AND ELECTRIC POWER STEERING DEVICE EQUIPPED THEREWITH
ELEKTRONISCHE STEUERUNGSVORRICHTUNG UND SERVOLENKUNG DAMIT
DISPOSITIF DE COMMANDE ÉLECTRONIQUE ET DISPOSITIF DE DIRECTION À ASSISTANCE ÉLECTRIQUE ÉQUIPÉ DE CELUI-CI
2021-04-14
Patent
Elektronische Ressource
Englisch
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B62D MOTOR VEHICLES , Motorfahrzeuge / 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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