An active vibration isolative technique based on the giant magnetostrictive actuator was proposed, and a two-stage imitative vibration isolative platform for precise instruments was developed. Based on the imitative vibration isolative platform, the mathematical models of the system were established. According to the immune theory, an immune PID controller was designed to match the vibration active isolation system. Finally, this active control system of imitative vibration isolative platform was simulated using Simulink software and tested in the laboratory. The research results demonstrate that it can effectively suppress environmental vibration and satisfy vibration isolative requests of general precision instrument.

precise instrument, active vibration isolation, immune PID, simulation and experiment

针对精密仪器在使用过程中环境振动干扰会对测试结果带来影响这一问题,提出了一种基于超磁致伸缩驱动器的振动主动控制技术,并开发了面向精密仪器的二级模拟主动隔振系统,建立了模拟隔振系统的动力学模型。根据人工免疫原理,设计了免疫PID控制器,通过MATLAB环境中的Simulink工具对控制系统进行了仿真研究,并进行了现场实验测试。结果表明:所研制的精密仪器模拟隔振平台具有较好的隔振控制效果,能够满足相关精密仪器的隔振要求。

精密仪器, 主动隔振, 免疫PID控制, 仿真与实验