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题名:
Two-motor direct drive control for elevation axis of telescope
作者: Tang, T.1,2; Tan, Y.1,2; Ren, G.1,2
出版日期: 2014
会议名称: Proceedings of SPIE: Ground-Based and Airborne Telescopes V
会议日期: 2014
学科分类: Airborne telescopes - Closed loop control systems - Control systems - Electric current control - Natural frequencies - Resonance - Structural dynamics - Synchronization
DOI: 10.1117/12.2055124
中文摘要: Two-motor application has become a very attractive filed in important field which high performance is permitted to achieve of position, speed, and acceleration. In the elevation axis of telescope control system, two-motor direct drive is proposed to enhance the high performance of tracking control system. Although there are several dominant strengths such as low size of motors and high torsional structural dynamics, the synchronization control of two motors is a very difficult and important. In this paper, a multi-loop control technique base master-slave current control is used to synchronize two motors, including current control loop, speed control loop and position control loop. First, the direct drive function of two motors is modeled. Compared of single motor direct control system, the resonance frequency of two motor control systems is same; while the anti-resonance frequency of two motors control system is 1.414 times than those of sing motor system. Because of rigid coupling for direct drive, the speed of two motor of the system is same, and the synchronization of torque for motors is critical. The current master-slave control technique is effective to synchronize the torque, which the current loop of the master motors is tracked the other slave motor. The speed feedback into the input of current loop of the master motors. The experiments test the performance of the two motors drive system. The random tracking error is 0.0119" for the line trajectory of 0.01°/s. © 2014 SPIE.
英文摘要: Two-motor application has become a very attractive filed in important field which high performance is permitted to achieve of position, speed, and acceleration. In the elevation axis of telescope control system, two-motor direct drive is proposed to enhance the high performance of tracking control system. Although there are several dominant strengths such as low size of motors and high torsional structural dynamics, the synchronization control of two motors is a very difficult and important. In this paper, a multi-loop control technique base master-slave current control is used to synchronize two motors, including current control loop, speed control loop and position control loop. First, the direct drive function of two motors is modeled. Compared of single motor direct control system, the resonance frequency of two motor control systems is same; while the anti-resonance frequency of two motors control system is 1.414 times than those of sing motor system. Because of rigid coupling for direct drive, the speed of two motor of the system is same, and the synchronization of torque for motors is critical. The current master-slave control technique is effective to synchronize the torque, which the current loop of the master motors is tracked the other slave motor. The speed feedback into the input of current loop of the master motors. The experiments test the performance of the two motors drive system. The random tracking error is 0.0119" for the line trajectory of 0.01°/s. © 2014 SPIE.
收录类别: Ei
语种: 英语
卷号: 9145
ISSN号: 0277786X
文章类型: 会议论文
页码: 914559
Citation statistics:
内容类型: 会议论文
URI标识: http://ir.ioe.ac.cn/handle/181551/7415
Appears in Collections:光电工程总体研究室(一室)_会议论文

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作者单位: 1. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, China
2. Key Lab of Beam Control, Chinese Academy of Sciences, Chengdu, China

Recommended Citation:
Tang, T.,Tan, Y.,Ren, G.. Two-motor direct drive control for elevation axis of telescope[C]. 见:Proceedings of SPIE: Ground-Based and Airborne Telescopes V. 2014.
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