【摘要】 为简化磁流变控制系统并提高其可靠性,该文将压电集能技术与磁流变控制技术相融合,提出了一种自适应磁流变控制系统。根据压电效应原理,压电集能装置可以将被控结构的振动能转化为可驱动磁流变阻尼器工作的电能,且被控结构振动愈大,压电集能装置收集的电能愈多,磁流变阻尼器能够产生的阻尼力也就越大,因此该文提出的控制系统具有良好的自适应性。结合滨州黄河大桥N26号斜拉索和1个5层隔震结构模型,该文对自适应控制系统的设计过程进行了推衍,并通过MATLAB仿真对比了不同控制方法下结构的反应。仿真结果说明,所提自适应控制系统具有良好的控制效果。更多还原

【Abstract】 To simplify an MR(magnetorheological) damper system and enhance its reliability,an adaptive MR damper based control system combined with a piezoelectric component is put forward.According to the piezoelectric effect,a piezoelectric device which can power the MR damper can convert structural vibration energy into electrical energy.The intenser vibration produces more electrical energy,and the more electrical energy leads to larger damping force and the larger damping force means the higher attenuation of structural vibration.The new control system has a well self-adaption performance.For the N26 cable model from Shandong Binzhou Yellow River Bridge and one five-storey building model,the adaptive systems are designed.Both models controlled by different control methods are respectively simulated in MATLAB.The adaptive MR control systems are proved to have good control efficacy.更多还原