Research on the Intelligent Control Algorithm of PTZ System Driven by Two-DOF Ultrasonic Motor

Leng Xuefei; Wu Songsen; Jin Jiamei; Wang Bihui; Mao Xingyun

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Research on the Intelligent Control Algorithm of PTZ System Driven by Two-DOF Ultrasonic Motor

Leng Xuefei 1 * #,Wu Songsen 1,Jin Jiamei 2,Wang Bihui 1,Mao Xingyun 1

1.College of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing,210016

2.State Key Laboratory of Mechanics and Control of Mechanical Structure of Nanjing University of Aeronautics and Astronautics, Nanjing,210016

*Correspondence author

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Funding: National Natural Science Foundation of China Youth Science Fund Project （No.No. 51205193) and the Research Fund for Doctoral Program of the Ministry of Education）

Opened online:23 October 2014

Accepted by: none

Citation: Leng Xuefei,Wu Songsen,Jin Jiamei.Research on the Intelligent Control Algorithm of PTZ System Driven by Two-DOF Ultrasonic Motor[OL]. [23 October 2014] http://en.paper.edu.cn/en_releasepaper/content/4613976

It is difficult for the traditional pan-tilt-zoom(PTZ) system driven by electromagnetic motor to meet the growing demand for video monitoring system. The key bottleneck problem is high positioning accuracy、high dynamic performance and miniaturization of PTZ system. This paper presents a PTZ system driven by new single stator two degree-of-freedom obelisk-shaped ultrasonic motor, and make research on its intelligent control algorithm. First, analysis of the structure and driving mechanism of the PTZ system mentioned above are conducted using both the method of simulation and experiment. Then this paper combines the fuzzy PID control algorithm and the variable gain cross coupling control strategy to improve the control performance. The results of simulation show that this algorithm proposed in this paper has faster response and higher precision and also has a good robustness to prevent the effect of interference.

Keywords:control theory and control engineering; PTZ systems; ultrasonic motor; fuzzy PID; cross-coupled control

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