动力装置主动隔振系统硬件设计

Hardware Design of Active Vibration Isolation Systems for Power Plants

随着人们对工作环境、设备可靠性及耐用度、加工精度和设备隐蔽性的要求不断提高,对于振动控制的要求也越来越高。单纯的被动隔振系统无法削弱船体浮筏200 Hz以下的低频振动。主动隔振系统利用作动器产生与激振力相反的作用力可以有效地削弱低频振动。以船体浮筏为控制对象,针对削弱200 Hz以下的低频振动开发了一套主动隔振系统。系统中采用加速度信号作为系统输入和反馈,以DSP+FPGA双核处理架构作为控制核心,最终以电磁作动器作为执行机构,分别通过对150 Hz、100 Hz、50 Hz三种频率振动控制的测试,分析发现该系统可以达到预期隔振效果,削弱自身200 Hz以下的低频振动。

With the continuous development of people＇s demands for work environment, equipment reliability and durability, processing accuracy and equipment concealment, the demand for vibration control becomes higher and higher. Simple passive vibration isolation systems cannot weaken the low-frequency vibration below 200Hz for the hull floating. While the active vibration isolation system can effectively attenuate low-frequency vibration by using the actuator to generate a force opposite to the excitation force. In this paper, a buoyancy raft is taken as the control object, and am active vibration isolation system is developed to attenuate the low frequency vibration below 200 Hz. In this system, the acceleration signal is used as the input and feedback of the system, and the DSP＋FPGA dual-core processing architecture is used as the control core. Finally, the electromagnetic actuator is used to control the vibration at three different frequencies： 150 Hz, 100 Hz, and 50 Hz. It is concluded that the system can achieve the desired vibration isolation effect and weaken the low-frequency vibration below 200 Hz.