Method of eliminating synchronism control error in flash butt welding of bill
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摘要: 针对于大截面钢坯闪光焊顶锻阶段的特点和同步要求,提出了一种基于单神经元的同步误差预测控制方案,用于消除闪光焊顶锻过程中的系统之间顶锻力的同步误差;方案中采用液压系统压力反馈的方法解决了闪光焊中不方便安装里传感器的问题.考虑到液压系统的特点,使用AMESim液压仿真软件中的控制库和机械库建立了钢坯闪光焊的非线性液压系统模型、机械耦合系统模型,在Simulink中建立了控制系统的模型;为了验证控制器的性能,液压系统在建模过程中使各个分支的参数略有差异.仿真模型中建立了AMESim软件和Simulink软件的通信接口,通过这个接口实现了基于AMESim/Simulink的电液联合仿真;仿真结果表明基于单神经元预测控制的同步误差调节器在消除顶锻阶段同步误差上具有明显的作用.Abstract: Based on the characteristics and the demands of synchronization, a single nero forecast controller was presented,which was designed to eliminate synchronization error of upset force in flash butt welding. A press feedback loop was designed to solve the problem that it is uneasy to assemble force sensor in flash butt welding. In view of the characteristics of hydraulic system, a nonlinear hydraulic system and a coupling model of mechanical system were designed in AMESim by control library and mechanical library,and the controller was designed in Simulink. In order to verify the performance of the new designed controller, the parameters of hydraulic system between branches were set different. An interface between controller and hydraulic system was designed in Simulink and AMESim, by which the eletro-hydraulic co-simulation was achieved. The result shows that the forecast controller exhibits excellent performance on eliminating synchronism of upsetting force in flash butt welding.
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Key words:
- flash butt welding /
- synchronism error /
- AMESim /
- co-simulation /
- endless welding rolling
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