Hybrid electric vehicle and its active vibration reduction control method and device

Abstract

The invention discloses a hybrid electric vehicle and its active vibration reduction control method and device. The method includes the following steps: when judging that the hybrid electric vehicle is in the driving roaring condition according to the acceleration sensor signal and the crankshaft sensor signal, according to the engine's The target current value is calculated based on the rotational speed, vibration period and vibration amplitude, and the vehicle speed sensor signal of the hybrid electric vehicle is obtained at the same time. Correct the target current value according to the vehicle speed sensor signal and the rotational speed of the engine to obtain the first corrected current value; obtain the ignition coil signal of the engine, and when the engine is in the ignition state, according to the first corrected current value and the ignition coil signal output with The drive signal at working time is sent to the drive circuit to perform active vibration reduction control on the hybrid electric vehicle. In this way, the active vibration reduction control under driving roaring conditions is realized, which has high timeliness, and the effective time of vibration reduction and noise reduction is directly obtained by using the ignition coil signal, and the vibration reduction effect is more effective.

Description

technical field

[0001] The invention relates to the technical field of automobiles, in particular to an active vibration reduction control method for a hybrid electric vehicle, an active vibration reduction control device for a hybrid electric vehicle and a hybrid electric vehicle with the device. Background technique

[0002] With the advancement of social technology, people have higher and higher requirements for comfort, and ride comfort has become an important indicator to measure the performance of cars. Among them, the main factor affecting ride comfort is car vibration, and car vibration There are many reasons for this, and engine vibration, as one of the main reasons, deserves attention. The engine vibration is mainly caused by the combustion in the engine cylinder and the reciprocating motion of the piston. The vibration is transmitted to the frame through the engine suspension system, and then transmitted to the cab, affecting the ride comfort.

[0003] In order t...

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