Automobile and its active vibration reduction control method and device

Abstract

The invention discloses an automobile and an active vibration reduction control method and device thereof. The method comprises the following steps that the revolution speed and the vibration period of an engine are calculated according to the crankshaft degree of the engine when the automobile is under an idling condition, the vibration state of the engine is calculated, and a target current value is calculated according to the vibration state; whether the engine is in an ignition state or not is judged according to an ignition coil signal; if yes, a driving signal with the working moment isoutput to a drive circuit according to the target current value and the ignition coil signal; the drive circuit outputs the work current with action time to an actuator according to the driving signal, the actuator works according to the work current so as to conduct active vibration reduction control over the automobile. Therefore, active vibration reduction control over the automobile under theidling condition is achieved, the method is high in timeliness, and moreover, the significant moment for vibration and noise reduction is directly obtained by using the ignition coil signal, so that the action time of vibration reduction control is more accurate, and the vibration reduction effect is better.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an active vibration reduction control method for an automobile, an active vibration reduction control device for an automobile and an automobile 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 car performance. Among them, the main factor affecting ride comfort is car vibration, which causes 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 to improve ride comfort, it is neces...

AI Technical Summary

Problems solved by technology

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 comfort of the ride.

Images