主动控制电致伸缩液压悬置隔振特性仿真  

Simulation of Vibration Characteristics of Active Controlled Hydraulic Mount with Electrostrictive Actuator

作　　者：史文库[1] 郑瑞清[2] 

机构地区：[1]吉林大学汽车工程学院，吉林长春130022 [2]上海泛亚汽车技术中心有限公司，上海201201

出　　处：《吉林大学学报（工学版）》2005年第1期100-100,共1页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金资助项目(50075034).

摘　　要：采用电致伸缩材料作为主动控制作动器的智能悬置，利用Matlab软件，并考虑了惯性通道、解耦通道及电致伸缩作动器的的非线性，建立了该悬置的仿真模型，选择滤波后的x-LMS算法作为控制算法，通过仿真计算研究了该悬置的隔振性能。采用查表的办法由控制位移求解控制电压，能有效地避免作动器非线性对系统性能的不良影响。研究结果表明，采用主动控制能有效地改善悬置的隔振性能。A simulation model for an active controlled engine mount with an electrostrictive actuator was built by means of Matlab. In the model the nonlinear characteristics of the inertia channel, the decoupler channel, and the electrostrictive actuator were incorporated. An adaptive controller using the filtered x-LMS algorithm was selected to cancel the force transmitted through the active mount in simulation. The control voltage applied in the actuator was calculated by table-inquiring to avoid the negative effect of actuator nonlinearity on the system performance. The research results show that the force transmitted from the engine to the body with control is reduced greatly in the reference frequency, the force amplitude transmitted the body with control is about 3% of without control in 6 s and about 1% of without control in 20 s. It shows that the active controlled mount reduces significantly the vibration transmitted from the engine to the vehicle body.

关 键 词：液压悬置 隔振性能 作动器 主动控制 伸缩 仿真计算 仿真模型 通道 系统性能 控制算法 

分 类 号：U463[机械工程—车辆工程]