摘要
针对直流电动机转速控制系统中并不要求多快的响应速度,而追求平稳阶跃响应的情况,通常采用步进式PID算法,把较大的阶跃信号划分成若干较小的步长,从而逐步逼近设定值。但是该算法难以应付测量误差带来的影响,为此,设计一种基于限幅增量式PID算法的直流电动机转速控制系统,限幅增量式PID算法通过对增量式PID算法的控制量增量的幅度加以步长限制,使控制量平稳变化,从而实现电动机平稳变速。理论分析和实验结果表明,因为限幅增量式PID算法的控制量是均匀变化,所以该系统不仅具有平稳的阶跃响应,还具有天然的抗干扰能力。
Step PID controller is usually applied in the situation that steady step response is more important than quick response in a DC motor speed control system,but the controller does not work when there exists measurement error. This paper designed a DC motor speed control system based on step-limiting incremental PID controller. The controller limits the increment of the control value of incremental PID by a step to smooth the change of control value,so as to achieve smooth speed shifting. Analytical and experimental results show that owing to the even variation of the control values,this system not only presents steady step response,but also has anti-interference ability in nature.
出处
《实验室研究与探索》
CAS
北大核心
2017年第5期24-27,共4页
Research and Exploration In Laboratory
基金
国家自然科学基金项目(41301514)
