摘要
数控机床的直线进给矢量控制系统中包含多个PID调节器,其控制参数直接影响系统性能。而直线进给系统是一个复杂的非线性时变系统,为了优化PID调节器控制参数,文章提出了改进的禁忌优化算法(Tabu),并将其应用于直线进给系统。在分析现有禁忌算法基础上,对Tabu算法的邻域范围、Tabu表和算法终止条件进行了改进,以直线进给系统的跟踪性能指标为目标函数,应用该算法对直线进给矢量控制系统各调节器的PID参数进行优化,并进行了实验验证。结果表明,应用文中方法优化控制器参数后,与传统PID控制相比,直线进给系统在负载改变时转速波动和位置跟踪误差显著减小,提高了直线进给系统的稳态和动态性能。
Linear feed vector control system of numerical control machine contains multiple PID controller whose control parameters directly affect system performance. Linear feed system is a complex nonlinear time-varying system,an improved Tabu optimization algorithm （ Tabu） is presented and applied in the linear feed system to optimize PID regulator control parameters ,Based on the analysis of the existing Tabu search algorithm （ Tabu） , the neighboring regions, Tabu table and algorithms termination condition is improved. The linear feed system tracking performance indicators are taken as the objective function, all regulator PID parameters of linear feed vector control system are optimized based on the improved Tabu search algorithm, the experiment is carried out . The results show that , compared with conventional PID control, the optimized controller makes the motor speed fluctuation and position tracking error reduce significantly when the load changes,and steady-state and dynamic performance of the linear feed system are improved.
出处
《组合机床与自动化加工技术》
北大核心
2016年第11期80-83,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金项目(61503180)
江苏省自然科学基金项目(BK20130744)
江苏省高校自然科学研究项目(13KJB120003)
