基于改进遗传算法的最小阻力功接触轮廓设计

Contact Contour Design of the Minimal Resistance Based on the Improved Genetic Algorithm

对Ducker公司的公路割草机机械避障机构的接触轮廓进行优化,增长其使用寿命并使避障过程更加平稳。研究可转动构件在避障过程中所受的阻力功及与其轮廓曲线的关系。通过分析其受力状态,假设一些参数,建立该问题的数学模型,并使用遗传算法计算得到较优解。最终通过solidworks软件仿真实验验证了所设计的轮廓外形,可使机械避障接触构件在避障过程中所受的阻力功较小。

It is an important problem to study the mechanical obstacle avoidance mechanism of Ducker road mower,optimize the contact profile of mechanical barrier mechanism,increase its service life and make the obstacle avoiding process more stable.In this paper,the relationship between the resistance work and the contour curve of the rotatable structure in the obstacle avoidance is studied.By analyzing its stress state and assuming some parameters,the mathematical model of the problem is established,and the optimal solution is obtained by genetic algorithm.Finally,the design of the contour shape is verified by the simulation experiment of solidworks software,which can make the resistance force of the mechanical obstacle avoidance contact member in the process of obstacle avoidance.