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用离散描述函数法分析某型高精度转台位置控制系统的稳定性，给出了非线性控制规律的具体实现形式，理论分析及仿真结果表明，该方法是非线性数字控制系统稳定性分析的有效方法
The discrete description function method is used to analyze the stability of a type of high precision turntable position control system. The concrete realization form of nonlinear control law is given. Theoretical analysis and simulation results show that this method is an effective method for the stability analysis of nonlinear digital control system