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两电机变频调速系统的神经网络广义逆解耦控制
引用本文:刘国海,刘平原,沈跃,王富良,康梅.两电机变频调速系统的神经网络广义逆解耦控制[J].中国电机工程学报,2008,28(36):98-102.
作者姓名:刘国海  刘平原  沈跃  王富良  康梅
作者单位:江苏大学电气信息工程学院
摘    要:两电机变频调速系统是一个多输入多输出(multi-input multi-output,MIMO)非线性强耦合的控制系统。神经网络广义逆控制方法不但可以实现MIMO系统的线性化与解耦,而且通过合理地调节广义逆系统的参数,可以使解耦后的单输入单输出(single-input single-output,SISO)系统具有开环稳定的特性,从而有利于系统的综合。论文对变频器工作在矢量控制方式下的系统数学模型进行广义逆存在性分析,进而导出系统的广义逆数学表达式。进一步构造神经网络广义逆系统串联在两电机系统之前,组成基于广义逆的伪线性复合系统。基于S7-300PLC试验平台,分别研究伪线性复合系统的开环特性和闭环特性,试验结果表明神经网络广义逆控制方法不但可以实现系统的解耦,而且可以使伪线性化后的子系统开环稳定,附加闭环控制器的问题就迎刃而解。

关 键 词:两电机  广义逆  神经网络  解耦控制  张力控制
收稿时间:2007-09-17

Neural Network Generalized Inverse Decoupling Control of Two-motor Variable Frequency Speed-regulating System
LIU Guo-hai LIU Ping-yuan SHEN Yue WANG Fu-liang KANG Mei.Neural Network Generalized Inverse Decoupling Control of Two-motor Variable Frequency Speed-regulating System[J].Proceedings of the CSEE,2008,28(36):98-102.
Authors:LIU Guo-hai LIU Ping-yuan SHEN Yue WANG Fu-liang KANG Mei
Abstract:Two-motor variable frequency speed-regulating system is a multi-input multi-output(MIMO), nonlinear, and high coupling control system.Being rightly designed, the generalized inverse system can transform the MIMO nonlinear system into a number of single-input single-output(SISO) linear subsystems with open-loop stability, and benefits the integration of this two-motor system.The generalized reversibility of this two-motor system working on vector control mode was testified.Consequently, a pseudo-linear system was completed by constructing a neural network generalized inverse system and combining it with two-motor system.The open-loop and the closed-loop characteristics of this pseudo-linear system were studied using S7-300 PLC, inverter and induction motor.The experimental results demonstrate that decoupling control with open-loop stability can be reached, the close-loop controller was easily designed by neural network generalized inverse(NNGI) control method.NNGI control system has good performances.
Keywords:two-motor  generalized inverse  neural network  decoupling control  tension control
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