The invention relates to an inertia compensation feedforward algorithm for an electric hydraulic pump for an active suspension, which comprises the following steps: when the electric hydraulic pump rotates to accelerate or decelerate, a motor needs to continuously reverse to continuously output different torques, and a compensation torque is calculated; when the volume efficiency and the mechanical efficiency are not considered, the motor torque is the sum of the torque required by the motor output force value and the compensation torque; and respectively calculating the motor torque when the angular acceleration is zero and when the angular acceleration exists. According to the method, it is proposed for the first time that when the motor torque is calculated, the compensation torque generated by the system inertia is considered, when the active suspension receives the needed target force value, besides the torque needed by the motor to output the force value, extra inertia generated by the motor inertia existing in the angular acceleration needs to be applied to the motor, and it is guaranteed that control is fast and accurate; according to the method, the relation between the ideal motor torque output and the ideal pump output pressure is confirmed, the relation of torque-pressure-angular acceleration support is confirmed, a force value instruction is rapidly converted into the motor torque, and rapid control is guaranteed.
本发明涉及一种主动悬架用电动液压泵惯量补偿前馈算法,包括电动液压泵旋转加速或者减速时,电机需要不停的换向持续输出不同的扭矩,计算补偿扭矩;在不考虑容积效率及机械效率时,电机扭矩为电机输出力值所需扭矩与补偿扭矩之和;分别计算角加速度为零以及存在角加速度时的电机扭矩。本发明首次提出在计算电机扭矩时,考虑系统惯量所产生的补偿扭矩,主动悬架接收到所需目标力值时,除了电机输出力值所需的扭矩,还需要对电机施加电机惯量存在角加速度所产生的额外的惯量,保证控制的快速及精准;本发明确认了理想电机的扭矩输出与理想泵输出压力的关系,确认扭矩‑压力‑角加速度支架的关系,快速将力值指令转化为电机扭矩,保证控制迅速。
Inertia compensation feedforward algorithm for electric hydraulic pump for active suspension
一种主动悬架用电动液压泵惯量补偿前馈算法
2024-04-26
Patent
Elektronische Ressource
Chinesisch
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |
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