基于CPSO的压铸机快速压射非线性闭环控制  

Nonlinear Closed-loop Control for Die-casting Machine′s Rapid Injection Based on CPSO

作　　者：杨博[1] 韩云涛[2] 

机构地区：[1]辽宁工程技术大学矿业技术学院 [2]辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛125105

出　　处：《铸造技术》2013年第11期1551-1554,共4页Foundry Technology

基　　金：辽宁省高等学校优秀人才支持计划资助项目(2008RC 25);辽宁省创新团队资助项目(LT2010047)

摘　　要：针对压铸机快速压射系统PID控制器参数快速寻优问题,提出了一种混沌粒子群优化(CPSO)算法。该算法利用混沌序列对惯性权重进行混沌变异,添加混沌扰动项对陷入局部最优值的种群进行混沌搜索。通过仿真对比试验表明,该算法相对于一般的粒子群优化方法具有更好的收敛速度和精度,能显著提高PID控制器的寻优速度,从而实现压铸机快速压射系统的最优控制。Aimed at the problem of fast optimization of proportional integral differential （PID） controller in die-casting machine＇s rapid injection system, a CPSO algorithm was presented. The inertia weight in the algorithm was chaotically mutated by using the chaotic sequence, the population which is trapped into the local optimum value was chaotically searched by adding chaotic disturbance. Simulation results show that the algorithm has better convergence speed and accuracy compared with the conventional particle swarm optimization, can effectively improve the optimization speed ofPID controller and achieve optimal control for the system of die-casting machine＇s rapid injection.

关 键 词：压铸机 快速压射 PID控制器 CPSO算法 惯性权重 混沌搜索 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]