Instability Condition Derivation for Hydraulic AGC System under Pressure Closed-Loop Control
In strip rolling, hydraulic automatic gauge control (HAGC) system is the key element to guarantee the precision of strip gauge. The stability of the kernel pressure closed loop (PCL) in the HAGC system plays an essential role in guaranteeing the rolling process with high performance. Nevertheless, t...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/6618525 |
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| _version_ | 1832560964517494784 |
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| author | Yong Zhu Guangpeng Li Shengnan Tang Wanlu Jiang Pengfei Qian Zhi Zheng Zhijian Zheng |
| author_facet | Yong Zhu Guangpeng Li Shengnan Tang Wanlu Jiang Pengfei Qian Zhi Zheng Zhijian Zheng |
| author_sort | Yong Zhu |
| collection | DOAJ |
| description | In strip rolling, hydraulic automatic gauge control (HAGC) system is the key element to guarantee the precision of strip gauge. The stability of the kernel pressure closed loop (PCL) in the HAGC system plays an essential role in guaranteeing the rolling process with high performance. Nevertheless, there is some difficulty in exploring the instability mechanism of the HAGC system due to the fact that the PCL is a representative nonlinear closed-loop control system. In this work, for each component of the HAGC system, the mathematical model was established. And on the basis of the linking relation of various elements, we derived the incremental transfer model of the PCL system. Furthermore, in accordance with the deduced information transfer relation, the transfer block diagram of disturbing variable of the PCL system was obtained. Moreover, for the purpose of deriving the instability condition of the PCL system, the Popov frequency criterion was employed. The instability conditions of the HAGC system were obtained under PCL control. Furthermore, the derived instability conditions of the HAGC system were experimentally verified under various working conditions. The research results provide a fundamental foundation for studying the instability mechanism of the HAGC system. |
| format | Article |
| id | doaj-art-b46c14964ef641ac9e736bea09b6f5e0 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-b46c14964ef641ac9e736bea09b6f5e02025-02-03T01:26:23ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/66185256618525Instability Condition Derivation for Hydraulic AGC System under Pressure Closed-Loop ControlYong Zhu0Guangpeng Li1Shengnan Tang2Wanlu Jiang3Pengfei Qian4Zhi Zheng5Zhijian Zheng6National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, ChinaNational Research Center of Pumps, Jiangsu University, Zhenjiang 212013, ChinaNational Research Center of Pumps, Jiangsu University, Zhenjiang 212013, ChinaHebei Provincial Key Laboratory of Heavy Machinery Fluid Power Transmission and Control, Yanshan University, Qinhuangdao 066004, ChinaNational Research Center of Pumps, Jiangsu University, Zhenjiang 212013, ChinaCollege of Mechanical Engineering, North China University of Science and Technology, Tangshan 063210, ChinaNingbo Academy of Product and Food Quality Inspection, Ningbo 315048, ChinaIn strip rolling, hydraulic automatic gauge control (HAGC) system is the key element to guarantee the precision of strip gauge. The stability of the kernel pressure closed loop (PCL) in the HAGC system plays an essential role in guaranteeing the rolling process with high performance. Nevertheless, there is some difficulty in exploring the instability mechanism of the HAGC system due to the fact that the PCL is a representative nonlinear closed-loop control system. In this work, for each component of the HAGC system, the mathematical model was established. And on the basis of the linking relation of various elements, we derived the incremental transfer model of the PCL system. Furthermore, in accordance with the deduced information transfer relation, the transfer block diagram of disturbing variable of the PCL system was obtained. Moreover, for the purpose of deriving the instability condition of the PCL system, the Popov frequency criterion was employed. The instability conditions of the HAGC system were obtained under PCL control. Furthermore, the derived instability conditions of the HAGC system were experimentally verified under various working conditions. The research results provide a fundamental foundation for studying the instability mechanism of the HAGC system.http://dx.doi.org/10.1155/2021/6618525 |
| spellingShingle | Yong Zhu Guangpeng Li Shengnan Tang Wanlu Jiang Pengfei Qian Zhi Zheng Zhijian Zheng Instability Condition Derivation for Hydraulic AGC System under Pressure Closed-Loop Control Shock and Vibration |
| title | Instability Condition Derivation for Hydraulic AGC System under Pressure Closed-Loop Control |
| title_full | Instability Condition Derivation for Hydraulic AGC System under Pressure Closed-Loop Control |
| title_fullStr | Instability Condition Derivation for Hydraulic AGC System under Pressure Closed-Loop Control |
| title_full_unstemmed | Instability Condition Derivation for Hydraulic AGC System under Pressure Closed-Loop Control |
| title_short | Instability Condition Derivation for Hydraulic AGC System under Pressure Closed-Loop Control |
| title_sort | instability condition derivation for hydraulic agc system under pressure closed loop control |
| url | http://dx.doi.org/10.1155/2021/6618525 |
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