The invention discloses an active shock absorber pressure loss compensation algorithm, which belongs to the technical field of automobile active shock absorbers, and specifically comprises the following steps: S1, an upper computer sends a required force value Fcmd to an electric hydraulic pump, and the electric hydraulic pump drives an actuator to enable the force value of the actuator to meet the required force value Fcmd; s2, the pressure difference Pp of the two sides of the electric hydraulic pump is calculated; s3, the leakage rate Qleak of the electric hydraulic pump is calculated; s4, calculating the actual flow of the pump; s5, calculating the flow of the throttle valve; s6, the pressure drop Ph of the throttling valve is calculated; s7, calculating a feedback force value Fb; s8, solving a difference value Ferro, and then carrying out PID control on the difference value Ferro to adjust the pressure value of the pressure sensor; and S9, outputting an accurate acting force value. By properly increasing or reducing the torque of the motor, the main power attenuation caused by pressure loss is compensated, so that the final output main power meets the requirement, and the accuracy of the main power value output by the active shock absorber is ensured.
本发明公开了一种主动减振器压力损失补偿算法,属于汽车主动减振器技术领域,具体包括如下步骤:S1、上位机发送需求力值Fcmd给电动液压泵,电动液压泵驱动作动器,使其力值满足需求力值Fcmd;S2、计算电动液压泵两侧压力差△Pp;S3、计算电动液压泵泄漏量Qleak;S4、计算泵实际流量;S5、计算节流阀流量;S6、计算节流阀压力降△Ph;S7、计算反馈力值Fb;S8、求出差值Ferro,然后对差值Ferro进行PID控制调节压力传感器的压力值;S9、输出准确的作动力值。本发明通过适当的增大或者适当的减小电机的扭矩,弥补压力损失导致的主动力衰减,使最终的输出的主动力满足需求,保证了主动减振器输出主动力值的精准性。
Pressure loss compensation algorithm for active shock absorber
一种主动减振器压力损失补偿算法
2024-04-26
Patent
Electronic Resource
Chinese
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |