多目标优化的掘进机截割减速器齿轮传动系统动态特性分析

Dynamic Characteristics Analysis of Cutting Reducer Gear Transmission System of Roadheader Based on Multi-objective Optimization

在分析齿轮参数对传动系统动态特性灵敏度影响的基础上,确定齿轮模数与齿宽系数为影响传动系统动态特性的主要因素。将体积、最大动载系数和轴承处振动加速度作为优化的多目标评价指标,通过遗传算法求出约束条件下的最优解。仿真结果显示,优化后齿轮传动系统的体积减少了18.9%,最大动载系数下降了11.5%,轴承处振动加速度下降了8.3%,验证了多目标优化方法的有效性。

Based on the analysis of the influence of gear parameters on the sensitivity of the dynamic characteristics of the transmission system, it was determined that the gear modulus and tooth width coefficient are the main factors that affect the dynamic characteristics of the transmission system. The volume, maximum dynamic load coefficient and vibration acceleration at the bearing were taken as the mult-objective evaluation indexes of optimization, the optimal solution under the constraint condition was obtained through genetic algorithm. The simulation results show that the volume of the gear transmission system after optimization is reduced by 18.9%, the maximum dynamic load coefficient is reduced by 11.5%, and the vibration acceleration at the bearing is reduced by 8.3%, which verifies the effectiveness of the multi-objective optimization method.