馈能悬架并联机构静力学分析

Static Analysis of Parallel Mechanism with Energy-Regenerative Suspension System

为了解决馈能悬架传统机构效率低下、结构复杂等问题,提出一种新型的少自由度并联机构馈能悬架。该悬架系统可以将车身的垂向运动通过执行平台传递到动基座,然后转化为可以带动馈能电动机回收能量的旋转运动。首先,建立二自由度1/4汽车馈能悬架模型,对并联机构进行位置分析,利用坐标变换法,得到其位置逆解。然后,通过拆杆法对并联机构的各个杆件进行静力学分析,得到其静力学平衡方程组;通过求解该方程,得出了该机构各个杆件的全部约束力和力矩。运用SolidWorks软件进行建模,并导入有限元软件平台中进行结构静力学仿真分析。仿真结果表明,该并联机构符合设计要求,验证了所建模型的有效性,为该机构运用到悬架系统中提供了参考。

In order to solve the problems of low mechanical efficiency and complex structure of the traditional energy-regenerative suspension mechanism, a new type of energy-regenerative suspension system with lower-mobility parallel mechanism is proposed. The suspension system can transform the vertical motion of the car body to the rotary motion that can drive an alternator to regenerate the energy. Firstly, a two DOF 1/4 vehicle energy-regenerative suspension model is established. The position of parallel mechanism is analyzed, and its inverse position solution is obtained by using the pose coordinate transformation method. Subsequently, by the dismantle-bar method, the static equilibrium equations of the mechanism are set up. All of the forces/torques of each component of the mechanism is obtained by solving the static equilibrium equations. Finally, the SolidWorks software is used to build model and import it into the finite element software platform for structural static analysis. The simulation results show that the parallel mechanism meets the design requirements and verifies the validity of the model, which provides a reference for the application of the mechanism to the suspension system.