Modeling and Fault Simulation of a New Double-Redundancy Electro-Hydraulic Servo Valve Based on AMESim
The feedback spring rod of the armature assembly was eliminated in the double-redundancy electro-hydraulic servo valve (DREHSV), which employed a redundant design in contrast to the typical double-nozzle flapper electro-hydraulic servo valve (DNFEHSV). The pilot stage was mainly composed of four tor...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Actuators |
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| Online Access: | https://www.mdpi.com/2076-0825/12/11/417 |
| _version_ | 1827641033126576128 |
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| author | Qiuhui Liang Wentao Wang Yifei Zhai Yanan Sun Wei Zhang |
| author_facet | Qiuhui Liang Wentao Wang Yifei Zhai Yanan Sun Wei Zhang |
| author_sort | Qiuhui Liang |
| collection | DOAJ |
| description | The feedback spring rod of the armature assembly was eliminated in the double-redundancy electro-hydraulic servo valve (DREHSV), which employed a redundant design in contrast to the typical double-nozzle flapper electro-hydraulic servo valve (DNFEHSV). The pilot stage was mainly composed of four torque motors, and the double-system spool was adopted in the power stage. Consequently, the difficulty of spool displacement control was increased. By artificially changing the structural parameters of the simulation model in accordance with the theoretical analysis through AMESim, this paper aimed to study the dynamics and static characteristics of the DREHSV. The advantage of redundant design was further demonstrated by disconnecting working coils and setting the different worn parts of the spool. On the test bench, the necessary experiments were performed. Through simulation, it was discovered that when the clogged degree of the nozzle is increased, the zero bias value increases, the pressure and flow gain remain unchanged, and the internal leakage decreases. The pressure gain changes very little, the flow gain close to the zero position grows, the zero leakage increases significantly, and the pilot stage leakage changes very little as a result of the wear of the spool throttling edge. The basic consistency between the simulation curves and the experimental findings serve to validate the accuracy of the AMESim model. The findings can serve as a theoretical guide for the design, debugging, and maintenance of the DREHSV. The simulation model is also capable of producing a large amount of sample data for DREHSV fault diagnosis using a neural network. |
| first_indexed | 2024-03-09T17:07:44Z |
| format | Article |
| id | doaj.art-bd760ef05ba947edafa7923eb0c24834 |
| institution | Directory Open Access Journal |
| issn | 2076-0825 |
| language | English |
| last_indexed | 2024-03-09T17:07:44Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Actuators |
| spelling | doaj.art-bd760ef05ba947edafa7923eb0c248342023-11-24T14:22:33ZengMDPI AGActuators2076-08252023-11-01121141710.3390/act12110417Modeling and Fault Simulation of a New Double-Redundancy Electro-Hydraulic Servo Valve Based on AMESimQiuhui Liang0Wentao Wang1Yifei Zhai2Yanan Sun3Wei Zhang4School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, ChinaShijiazhuang Haishan Industrial Development Co., Ltd., Shijiazhuang 050200, ChinaSchool of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, ChinaShijiazhuang Haishan Industrial Development Co., Ltd., Shijiazhuang 050200, ChinaSchool of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, ChinaThe feedback spring rod of the armature assembly was eliminated in the double-redundancy electro-hydraulic servo valve (DREHSV), which employed a redundant design in contrast to the typical double-nozzle flapper electro-hydraulic servo valve (DNFEHSV). The pilot stage was mainly composed of four torque motors, and the double-system spool was adopted in the power stage. Consequently, the difficulty of spool displacement control was increased. By artificially changing the structural parameters of the simulation model in accordance with the theoretical analysis through AMESim, this paper aimed to study the dynamics and static characteristics of the DREHSV. The advantage of redundant design was further demonstrated by disconnecting working coils and setting the different worn parts of the spool. On the test bench, the necessary experiments were performed. Through simulation, it was discovered that when the clogged degree of the nozzle is increased, the zero bias value increases, the pressure and flow gain remain unchanged, and the internal leakage decreases. The pressure gain changes very little, the flow gain close to the zero position grows, the zero leakage increases significantly, and the pilot stage leakage changes very little as a result of the wear of the spool throttling edge. The basic consistency between the simulation curves and the experimental findings serve to validate the accuracy of the AMESim model. The findings can serve as a theoretical guide for the design, debugging, and maintenance of the DREHSV. The simulation model is also capable of producing a large amount of sample data for DREHSV fault diagnosis using a neural network.https://www.mdpi.com/2076-0825/12/11/417double-redundancy electro-hydraulic servo valveAMESimarmature assemblyfault simulationfault tolerance |
| spellingShingle | Qiuhui Liang Wentao Wang Yifei Zhai Yanan Sun Wei Zhang Modeling and Fault Simulation of a New Double-Redundancy Electro-Hydraulic Servo Valve Based on AMESim Actuators double-redundancy electro-hydraulic servo valve AMESim armature assembly fault simulation fault tolerance |
| title | Modeling and Fault Simulation of a New Double-Redundancy Electro-Hydraulic Servo Valve Based on AMESim |
| title_full | Modeling and Fault Simulation of a New Double-Redundancy Electro-Hydraulic Servo Valve Based on AMESim |
| title_fullStr | Modeling and Fault Simulation of a New Double-Redundancy Electro-Hydraulic Servo Valve Based on AMESim |
| title_full_unstemmed | Modeling and Fault Simulation of a New Double-Redundancy Electro-Hydraulic Servo Valve Based on AMESim |
| title_short | Modeling and Fault Simulation of a New Double-Redundancy Electro-Hydraulic Servo Valve Based on AMESim |
| title_sort | modeling and fault simulation of a new double redundancy electro hydraulic servo valve based on amesim |
| topic | double-redundancy electro-hydraulic servo valve AMESim armature assembly fault simulation fault tolerance |
| url | https://www.mdpi.com/2076-0825/12/11/417 |
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