激光拾音头力矩器数学模型的研究

On Actuator Mathematical Model of Optical Pick-up

通过力矩器的结构分析,采用自动控制理论推导出一个动态数学模型。在此基础上,运用Matlab提出一种力矩器的非线性回复力模型实验仿真拟合的方法并对某种力矩器进行了实验仿真。这种方法可以方便和有效地使用于大部分光学头,但是由于非线性的存在,对大的动态范围仿真拟合的精度较差。

A dynamic model of actuator by analyzing the actuator system is proposed based on the automatic control theory. A method of simulation of nonlinear reversion force model of actuators is presented by using Madab. And the experiment simulation for some actuator shows that the method is very convenient and effective to most kinds of optical pick-up. Because reversion force model is nonlinear, precision of simulation is not high under the condition of big scope.