沥青砂浆车液压系统的辨识与PID参数整定  

Identification and PID parameters setting of the hydraulic system for asphalt mortar car

作　　者：蔡钟山[1] 张认成[1] 杨建红[1] 

机构地区：[1]华侨大学机电及自动化学院,福建厦门361021

出　　处：《郑州轻工业学院学报（自然科学版）》2011年第5期27-30,共4页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：福建省科技重大专题项目(2008HZ0002-1)

摘　　要：针对沥青砂浆车液压系统难以精确控制的问题,采用实验与理论相结合的方法,对液压系统进行辨识:分别采用绝对误差积分(IAE)、平方误差积分(ISE)、时间与误差平方乘积积分(ITSE)3种适应度函数,利用粒子群优化算法(PSO)对辨识得到的系统模型进行PID参数整定.对比研究结果表明:辨识得到的系统与实际系统相似度达到96%,基于ITSE性能指标的PSO整定得到的PID参数用于系统控制,响应速度更快、稳定性更好、准确性更高.The hydraulic system for asphalt mortar car is difficult to control precisely.Empirical method and hydraulic system theoretical knowledge are combined to be adopted to identify the hydraulic system.Based on the identified model,PID parameters of the control system are set separately by using PSO algorithm.Some comparative research are studied by using three different fitness functions,such as IAE,ISE and ITSE.The results showed that the similarity between identified hydraulic system and the practical system is up to 96%;By comparison,the system using the PID parameters which were obtained by PSO based on ITSE has a faster response,better stability and higher accuracy.

关 键 词：系统辨识 沥青砂浆车液压系统 PID控制 粒子群算法 适应度函数 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]