主动控制传感器低频特性拓展研究

Extended Research on Low Frequency Characteristic of Active Control Sensor

传感器是振动主动控制系统中的重要元件,其功能是检测控制系统内振动的加速度、速度或位移等变量,为主动控制器提供确定控制系统所需的性能信息或与系统响应有关的控制振动参数。主动控制器所需传感器对低频的要求较高,本文利用现有的传感器技术,采用零极点配置补偿,将传感器频率从1Hz低频拓展到了0.25Hz左右,大大提高了主动控制器的隔振频率范围和隔振精度。

Sensor is an important component of active vibration control system. Its function is to detect the acceleration, speed or displacement of vibration in the control system,and provides the active controller with the required performance information or control vibration parameters related to the system response. The sensor required by active controller has higher requirement for low frequency. In this paper,the sensor frequency of active controller is extended from 1Hz to 0. 25Hz by using the existing sensor technology and zero - pole placement compensation,which greatly improves the vibration isolation frequency range and accuracy of active controller.