基于PID控制的加速器束流闭轨反馈

Beam Closed Orbit Feedback Based on PID Control

束流闭轨反馈是提高束流轨道稳定性的有效措施,好的反馈算法可大幅提高束流轨道的稳定性。本文介绍了束流闭轨反馈校正理论和PID控制原理,以及应用PID控制进行储存环束流闭轨的反馈校正,并给出了模拟结果。结果表明,应用PID控制后,反馈系统的稳态误差更小,反馈精度更高,进一步提高了束流轨道的稳定性。

The algorithm in the feedback system has important influence on the perform- ance of the beam orbit. Good feedback algorithm can greatly improve the beam orbit stability. In this paper, the theory of beam closed orbit correction, the principle of PID control and the beam closed orbit feedback correction using PID control were intro- duced. The simulation results were given. Compared with least-square method, the PID feedback algorithm makes the steady-state error smaller and more accurate, and enhances the beam orbit stability.