液压挤压机挤压速度的预测控制

来源期刊：中国有色金属学报1996年第3期

论文作者：彭辉 彭晓燕 魏亮 曹显跃

文章页码：167 - 171

关键词：液压挤压机 挤压速度控制 CARIMA模型 GPC算法

Key words：hydraulic extrusion press　extrusion speed control　CARIMA model　GPC algorithm

摘    要：用CARIMA模型描述液压挤压机柱塞行进速度与节流阀驱动步进电机控制脉冲之间的关系，采用广义预测控制(GPC)算法控制挤压速度，使其跟踪速度引导曲线以实现模拟等温挤压。仿真实验表明，采用GPC算法能使挤压速度精确跟踪设定曲线，并能有效抑制对象参数时变、突加恒值干扰及随机干扰的影响。

Abstract: The relationship between the marching speed of main plunger of extrusion press and the control pulses of stepping motor s driving throttle valve was described by CARIMA model. The generalized predictive control (GPC) strategy was used to control extrusion velosity. This method can make the press track speed guide curves to achieve simulative isothermal extrusion. Simulation results showed that the GPC algorithm enabled extrusion speed to follow the given tracks accurately, and could effectively restrain the influence of variety of plant parameters.