真空钎焊温度的建模与解耦控制  

Modeling and Decoupling Control of Vacuum Brazing Temperature

作　　者：李晓斌[1] 吴燕翔[1] 孙海燕[1] 寇得民[2] 

机构地区：[1]上海海洋大学工程学院,上海200090 [2]兰州理工大学电气与信息工程学院,兰州730050

出　　处：《真空科学与技术学报》2009年第2期150-154,共5页Chinese Journal of Vacuum Science and Technology

基　　金：国家科技攻关计划(No.2002BA901A28);甘肃省省长基金(No.GS015-A52-012);上海海洋大学博士科研基金资助项目

摘　　要：真空钎焊炉中温度的精确控制是一个多变量控制问题,为实现钎焊温度的精确控制,以真空钎焊现场实际采集的数据为基础,辨识出真空钎焊炉温区温度一阶模型,提出一阶滞后系统的多变量预测函数解耦控制算法,得到一个解析的控制量计算方程,实现钎焊温度一阶滞后系统的多变量预测函数解耦控制。仿真和实际运行结果表明,该控制方法优于传统或改进的PID控制系统,具有很好的控制效果。The first-order plus time delay model was developed for the temperature field distribution in all regions of interest in the vacuum brazing furnace, based on the data acquisition in realistic vacuum brazing operation, to accurately control the brazing temperature. A new predictive function of the decoupling control （PFC） algorithm for the first order plus time delay,multiple-input-multiple-output（MIMO） system was proposed;and an analytical control equation was derived with the PFC algorithm. The predictive function decoupling control for the first order plus time delay MIMO system can be realized with the new-developed algorithm. The simulated and the experimental control results show that the proposed control system works effectively, and that it outperforms the conventional or advanced PID control system.

关 键 词：真空钎焊温度 建模 PSO-PFC方法 多变量预测函数解耦控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]