Engine torque pulsation counteracting method and hybrid power system

• Main Authors: YANG FUYUAN, JU LONGYU, WANG RUNNA, YU PING, XING WEI
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2024
• Subjects: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLES IN GENERAL

The invention discloses an engine torque pulsation counteracting method and a hybrid power system. The method is used for a hybrid power system and comprises the steps that a pulsation function of engine torque pulsation changing along with a crank connecting rod rotation angle is obtained; a torsional vibration counteracting function with counteracting torque changing along with the rotation angle of the crank connecting rod is constructed, control parameters are added into the torsional vibration counteracting function to optimize the torsional vibration counteracting function, and the sum of the counteracting torque and engine torque pulsation is made to be equal to 0 or close to 0; acquiring state data of the hybrid power system, and correcting the control parameters according to the state data; and when the engine and the motor operate, determining a counteracting torque instruction corresponding to the motor according to the torsional vibration counteracting function, and superposing the counteracting t