变量泵驱动变量马达系统协调控制算法研究

发布时间：2018-06-02 17:54

本文选题：变量泵 + 变量马达　；参考：《机床与液压》2017年17期

【摘要】：为了克服变量泵控制变量马达系统中泵和马达独立控制而存在系统溢流损失大、调节速度慢和没有发挥系统潜能等缺点,提出变量泵控制变量马达系统协调控制算法。变量泵对马达转速进行主动闭环控制;变量马达根据变量泵排量和马达转速要求进行预测控制而实现变量泵和变量马达的协调控制。变量泵闭环控制是时变系统,采用单神经元自适应PID控制算法;而对于变量马达控制,首先根据马达转速要求和变量泵排量计算马达预测排量,而后根据马达转速误差和转速误差变化率运用模糊控制算法修正马达预测排量而得到马达实际控制排量。对比仿真和实验表明:协调控制算法提高了变量泵控制变量马达系统响应速度,减少了系统溢流损失,验证了协调控制算法的正确性和有效性。
[Abstract]:In order to overcome the shortcomings of variable pump control variable motor system with independent control of pump and motor, such as large overflow loss, slow regulating speed and not giving full play to the potential of the system, a coordinated control algorithm for variable motor system controlled by variable pump is proposed. Variable pump carries out active closed-loop control of motor speed and variable motor realizes coordinated control of variable pump and variable motor according to variable pump displacement and motor speed requirement. Variable pump closed-loop control is a time-varying system, which adopts a single neuron adaptive PID control algorithm. For variable motor control, the motor displacement is first calculated according to the motor speed requirements and variable pump displacement. Then according to the motor speed error and the speed error change rate, the fuzzy control algorithm is used to correct the motor displacement prediction and the actual motor displacement is obtained. The simulation and experiments show that the coordinated control algorithm can improve the response speed of variable motor system, reduce the overflow loss, and verify the correctness and effectiveness of the coordinated control algorithm.
【作者单位】：中航金城南京机电液压工程研究中心;北京航空航天大学交通科学与工程学院;
【基金】：国家自然科学基金资助项目(51375029)
【分类号】：TH38;TP273

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