基于ADAMS-Isight联合仿真的电子机械制动器增力机构结构参数优化

Structural parameter optimization of booster mechanism of electromechanical brake based on ADAMS-Isight co-simulation

设计一种新型肘杆增力式机械制动器,为了优化该制动器增力机构的结构参数,在ADAMS软件平台上建立参数化模型,并进行初步仿真,获得该增力机构的初始增力效果。基于Isight软件集成ADAMS,以增力机构输出稳定最大夹紧力为目标进行优化设计,采用优化拉丁方实验设计方法设计试验变量,对得出的近似模型通过序列二次规划法(non-linear pragramming by quadratic lagrangian,NLPQL)进行针对增力机构输出夹紧力的单目标优化,最终得到结构参数局部最优解。研究表明:优化后的增力机构具有更好的增力系数,有利于降低对电子机械制动器中电动机的性能要求,降低生产成本。

In order to optimize the structural parameters of the new toggle lever booster brake,a parametric model is established on the software platform of ADAMS and the preliminary simulation is carried out to obtain the initial effect of this actuator.ADAMS is integrated with Isight software to optimize the design aiming at the maximum stable clamping force output of the augmenting mechanism.Experimental variables are designed by using the optimized Latin square experimental design method.The approximate model is optimized by NLPQL for the single-objective optimization of the clamping force output of the augmenting mechanism,and finally the local optimal solution of structural parameters is obtained.The research shows that the optimized booster mechanism has a better booster coefficient,which is helpful to reduce the performance requirements of the motor in the electromechanical brake and the production cost.