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分析了液压厚度控制系统动态数学模型．并与频率特性测试仪所测结果做了比较．得出了实用的被控对象结构图．为厚度控制系统的设计提供了理论依据．
The dynamic mathematical model of hydraulic thickness control system is analyzed. And compared with the frequency characteristic tester measured results. Draw a practical structure of the controlled object. It provides a theoretical basis for the design of thickness control system.