四段式液压机械复合传动模糊控制研究与仿真

Research and Simulation on Fuzzy Control of Four-stage Hydraulic Mechanical Compound Transmission

对液压机械传动系统进行节能控制,能够有效提高液压机械应用效率。液压机械传动系统节能控制,运用模糊控制方法控制液压机械的复合传动,按液压机械工作总效率对传动过程分层,根据输出层的结果完成对液压机械复合传动系统控制。传统方法分析液压机械的转速,对液压机械复合传动进行调节,但忽略了对液压机械复合传动节能控制分层,导致节能效果较差。提出一种液压机械复合传动模糊控制方法。通过液压机械的马达流量平衡模型、马达力矩平衡模型、溢流阀动态特性模型、得到液压机械工作的总效率。采用模糊控制方法对液压机械复合传动进行控制,结合液压机械工作总效率将传动节能控制过程分为输入层、模糊化层、规则层、规范化处理层、输出层,根据输出层结果对液压机械复合传动进行控制。实验结果表明,所提方法传动功率高,能耗低,验证所提方法传动功率高,节能效果好。

The energy saving control of hydraulic mechanical transmission system can effectively improve the efficiency of hydraulic machinery application. The traditional method analyzes the speed of hydraulic machinery and regulates the compound transmission of hydraulic machinery,but neglects the stratification of the energy saving control of the hydraulic mechanical compound transmission,which leads to the poor efficiency of energy saving. A fuzzy control method for hydraulic mechanical composite transmission is presented in the paper. The total efficiency of hydraulic machinery was obtained by hydraulic motor flow balance model,motor torque balance model and overflow valve dynamic characteristic model. The fuzzy control method was used to control the compound transmission of hydraulic machinery. The energy saving control process was divided into input layer,fuzzification layer,rule layer,standardized treatment layer and output layer,and the hydraulic machinery compound transmission was controlled in accordance with the output layer results. The experimental results show that the proposed method has high transmission power and low energy consumption,which proves that the proposed method has high transmission power and good energy saving effect.