汽车排放检测时测功机控制算法研究  

Study of dynamometer control algorithm in inspecting of vehicle emission

作　　者：李树珉[1] 高睿[1] 马效[1] 白云川[1] 王彦锋[1] 

机构地区：[1]军事交通学院汽车工程系,天津300161

出　　处：《中国测试》2010年第5期15-17,35,共4页China Measurement & Test

摘　　要：为了在进行汽车排放检测时使底盘测功机更准确地模拟出发动机的行驶工况,对工况法汽车排放检测控制系统进行了控制对象分析,针对汽车——测功机系统非线性、时滞大的特点,结合PID控制与神经网络算法的优点,设计了用于测功机控制的基于多层网的近似PID控制算法,并用Matlab对该算法和常规PID控制算法分别进行了仿真。对比结果表明,该算法的控制效果好于常规PID控制算法。In order to simulate the running status of the engine more accurately during vehicle’s emission inspection,this paper analyzed the control objects of vehicle’s emission inspection system in driving mode.Based on the non-linear and long time delay characteristics of vehicle dynamometer system and the advantages of PID controller and nerve network（NN） algorithm,a PID-NN control algorithm was proposed for the controlling of dynamometer.The simulation results obtained by Matlab indicated that the control performance of the new algorithm is better than conventional PID algorithm.

关 键 词：底盘测功机 电涡流测功器 神经网络 PID 控制算法 

分 类 号：U279.3[机械工程—车辆工程] TH871.7[交通运输工程—载运工具运用工程]