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从热连轧液压活套阀控缸的流量特性入手,通过对液压缸两腔流量特性的分析与推导,建立了液压活套阀控缸系统的数学模型,该模型区别于传统的“负载流量”等效模型,适用于对称缸、非对称缸和柱塞缸等多种结构形式。根据自动控制理论的模型简化处理方法,分析推导了该模型的简化形式。对某钢厂液压活套的阀控缸系统的动态过程进行了仿真实验分析,仿真结果与实测数据非常接近,验证了所建模型的有效性与准确性,为分析类似阀控缸对象的动态特性提供了模型依据。
Starting from the flow characteristics of hydraulic cylinder controlled by hot tandem hydraulic cylinder, the mathematical model of the hydraulic cylinder valve control cylinder system is established by analyzing and deducing the flow characteristics of the two chambers of the hydraulic cylinder. The model is different from the traditional “ Flow ”equivalent model for a variety of structural forms such as symmetrical cylinder, asymmetric cylinder and plunger cylinder. According to the simplified model of automatic control theory, the simplified form of the model is analyzed and deduced. The dynamic process of the valve-controlled cylinder system of hydraulic looper in a steel mill is simulated and analyzed. The simulation results are very close to the measured data, which verifies the validity and accuracy of the model. In order to analyze the dynamics of the valve- Features provide the model basis.