Acceleration feedback control for low velocity friction in servo control system
文献类型：会议论文
| 作者 | Tao Tang; YongmEi Huanga; Chengyu Fua; Jiaguang Ma |
| 出版日期 | 2009 |
| 会议名称 | Proceedings of SPIE |
| 会议日期 | 2009 |
| 卷号 | 7281 |
| 通讯作者 | Tao Tang |
| 中文摘要 | The control system stability is very important to be taken into account whether in fast tracking control systems or in slow tracking control systems. In particular, position tracking error becomes a great rush as long as the velocity is approximate to zero, or when the gimbals reverse into another direction. This is mainly because the friction torque causes the control system instability. Particularly in the only speed tracking system, it is very clear that the system oscillates back and forth until the velocity turns into a great value. By Lyapunov stability theory, the closed-loop system with only the velocity feedback proves to be unstable in low velocity tracking control. The acceleration is directly equivalent to torque, so a control algorithm base acceleration feedback control is proposed and introduced into the regular feedback system to eliminate the effects of low velocity friction, which includes velocity loop and tracking loop. The angular acceleration of the gimbals is computed from high precision accelerometers, while the velocity is filtered from the high-precision encoder. Experiments show that the proposed method with acceleration feedback loop eliminates the low velocity friction for stability and achieves high-precision tracking control performances. |
| 英文摘要 | The control system stability is very important to be taken into account whether in fast tracking control systems or in slow tracking control systems. In particular, position tracking error becomes a great rush as long as the velocity is approximate to zero, or when the gimbals reverse into another direction. This is mainly because the friction torque causes the control system instability. Particularly in the only speed tracking system, it is very clear that the system oscillates back and forth until the velocity turns into a great value. By Lyapunov stability theory, the closed-loop system with only the velocity feedback proves to be unstable in low velocity tracking control. The acceleration is directly equivalent to torque, so a control algorithm base acceleration feedback control is proposed and introduced into the regular feedback system to eliminate the effects of low velocity friction, which includes velocity loop and tracking loop. The angular acceleration of the gimbals is computed from high precision accelerometers, while the velocity is filtered from the high-precision encoder. Experiments show that the proposed method with acceleration feedback loop eliminates the low velocity friction for stability and achieves high-precision tracking control performances. |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/7371]  |
| 专题 | 光电技术研究所_光电工程总体研究室（一室） |
| 作者单位 | 中国科学院光电技术研究所 |
| 推荐引用方式 GB/T 7714 | Tao Tang,YongmEi Huanga,Chengyu Fua,et al. Acceleration feedback control for low velocity friction in servo control system[C]. 见:Proceedings of SPIE. 2009. |
入库方式： OAI收割
来源：光电技术研究所
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