摘要
为提高无刷直流电机控制系统的快速跟踪性能,提出了一种新的滑模变结构速度控制策略。为了有限抑制系统在滑模切换面上的抖振,提高系统鲁棒性,在建立无刷直流电动机数学模型的基础上,提出了一种新型指数趋近率的变结构控制策略,使切换函数快速进入滑模面,有效地提高了系统的性能。仿真实验结果表明,相比传统的PI控制,该系统在快速性、稳定性、准确性方面有显著提高,对参数扰动具有较强的鲁棒性。
A new variable structure speed control strategy was developed to improve the BLDCM control system. A new approach law variable structure control strategy was proposed in order to efficiently weaken the chattering on the sliding surface of the system and improve the robustness and performance based on the model of BLDCM control system. The simulation and experimental results validate that compared with the traditional PI control, the system has been significantly improved in speediness, stability and accuracy. The system has strong robustness to parameter perturbation using the new approach law variable structure control.
出处
《自动化应用》
2014年第4期83-85,101,共4页
Automation Application
基金
2012年湖南省教育厅高等学校科学研究一般项目(12c1005)
关键词
变结构
无刷直流电机
趋近率
variable structure
brushless DC motor
approach law
