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Sliding-mode control for coal shearer drum height adjustment based on variable speed reaching law
- Source :
- Journal of Vibroengineering, Vol 22, Iss 8, Pp 1782-1797 (2020)
- Publication Year :
- 2020
- Publisher :
- JVE International Ltd., 2020.
-
Abstract
- Aiming at the shortcomings of the automatic height control of the existing coal shearer drum, the control strategy of the coal shearer drums height adjustment sliding mode based on the variable speed reach law is proposed. Firstly, the mathematical model of the coal shearer height-adjusting cylinder is established, and the sliding mode switching function and its derivative including the deviation variable are derived. The exponential approaching law sliding mode controller is designed. Secondly, the hydraulic simulation of the drum height is established. The model compares and analyzes the control effects of traditional PID control and exponential approach law sliding mode control. The results show that the exponential approach law sliding mode control is superior to PID control in signal tracking dynamic response and steady state error; when the coal shearer is under load, the height of the drum under control of the exponential approaching law is basically unaffected; finally, the method of shifting the approaching law of dynamically adjusting the arrival speed by the fuzzy parameter optimization strategy is used to adjust the drum height. The simulation results show that compared with the traditional control method, the coal shearer control mode of the coal shearer drum based on the variable speed reach law not only ensures faster response speed and higher control precision, but also effectively reduces system chattering. Improve the reliability of the coal shearer cutting drive system.
- Subjects :
- sliding-mode
lcsh:Mechanical engineering and machinery
PID controller
chattering
02 engineering and technology
Drum
01 natural sciences
Fuzzy logic
Sliding mode control
0203 mechanical engineering
Control theory
0103 physical sciences
lcsh:TJ1-1570
General Materials Science
Coal
the variable rate reaching law
010301 acoustics
Mathematics
business.industry
Mechanical Engineering
coal shearer
Mode (statistics)
Exponential function
020303 mechanical engineering & transports
Law
business
height adjusting
Subjects
Details
- ISSN :
- 25388460 and 13928716
- Volume :
- 22
- Database :
- OpenAIRE
- Journal :
- Journal of Vibroengineering
- Accession number :
- edsair.doi.dedup.....0e74f8c5a4270a92c308522ba5d7befd