Second order linear active disturbance rejection control for active ultra-low frequency vibration isolation

Abstract

A compact stable vibration isolation system is designed to isolate vertical ground motions. Active vibration isolation technology has made rapid development in recent years. At present, it is in the stage of laboratory verification and trial application. In the early stage of the research, the theoretical research on control algorithm, control strategy and actuator has gradually turned to the integrated system research. Based on the active vibration isolation bench system, the design, development, detection and evaluation of the active vibration control system are completed by using the model development mode, and a set of simulation platform is built to verify and evaluate the design process. Active vibration isolation structure consists of signal pick-up system, excitation and monitoring system, actuator, power amplifier and passive vibration isolation platform, forming an integrated active vibration isolation platform, namely active control object. Based on the second-order active disturbance rejection control algorithm, the simulation model and experimental model of the control system are researched and developed, and the rapid development of the controller is realized by using the active disturbance rejection control technology. Based on the passive vibration isolation bench system and control system, the active vibration control experiment is completed, which verifies the correctness and effectiveness of the developed controller. At the same time, the experimental engineering file package is established in the experiment to realize the centralized management of the control experiment.