静液压传动车辆的复合控制  

Complex Control of Hydrostatic Transmission Vehicle

作　　者：朱从民[1] 

机构地区：[1]西安理工大学机械与精密仪器工程学院

出　　处：《农业机械学报》2005年第4期26-29,共4页Transactions of the Chinese Society for Agricultural Machinery

摘　　要：针对柴油机为动力的静液压传动车辆设计了由两个模糊控制器、一个模糊自适应PI控制器和一个PID控制器组成的复合控制系统,并利用柴油机外特性曲线对柴油机工况进行优化,使柴油机根据静液压系统的功率需求自动进行调速,解决了使用中柴油机过载保护,利用柴油机转速补偿车速和静液压传动系统的时变非线性控制等问题。A complex controller, consisted of two fuzzy controllers, a fuzzy adaptive PI controller and a PID controller, was designed for hydrostatic transmission system and the diesel engine with the aim of improving the control characteristics of hydrostatic transmission vehicle and optimizing the power of the diesel. Using the control strategy, the diesel can be protected when overload, its speed can be increased to help the pump to achieve the required driving speed when displacement of the pump is already full and can be adjusted according to the power curve to improve the utilization ratio of output power of the diesel. The results of simulation and experiment showed the vehicle can maintain good running performance, the diesel engine and the hydrostatic transmission are coordinated perfectly.

关 键 词：传动车辆 静液压传动系统 复合控制系统 PID控制器 模糊控制器 PI控制器 模糊自适应 外特性曲线 静液压系统 非线性控制 柴油机转速 车辆设计 过载保护 匹配性能 控制特性 控制方式 动力 仿真 

分 类 号：TP273.3[自动化与计算机技术—检测技术与自动化装置] U463.2[自动化与计算机技术—控制科学与工程]