轴动式力矩器数学模型的研究

On the math model of axial sliding and rotating movement actuator

力矩器是激光拾音头的关键部件,轴动式力矩器是光学头上常用的力矩器。本文通过对轴动式力矩器的物理结构分析,提出了轴动式力矩器的数学模型。由于力矩器有电流控制与电压控制两种方式,以及力矩器分别有FOCUS方向与TRACK方向的运动,所以分别提出了FOCUS方向流控、FOCUS方向压控、TRACK方向流控、TRACK方向压控四个动态数学模型。

Actuator is key components of OPU. Axial sliding and rotating movement actuator is one of general actuators. This article proposes a dynamic math model of axial sliding and rotating movement actuator by analyzing its configuration. Because actuator can be controlled by current or voltage and moves at two directions of focus and track, this article presents four models of F-CC,F-VC, T-CC and T-VC.