Experimental comparison between proportional and PWM-solenoid valves controlled servopneumatic positioning systems
The performance of the Dynamical Adaptive Backstepping-Sliding Mode Control (DAB-SMC) scheme for positioning of a pneumatic cylinder regulated by two types of PWM-solenoid valves is experimentally investigated. The goal is to study the compromise in controller’s performance as the system moves from...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Canadian Science Publishing
2017
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/3497/ http://eprints.uthm.edu.my/3497/1/AJ%202017%20%2862%29%20Experimental%20comparison%20between%20proportional.pdf |
| Summary: | The performance of the Dynamical Adaptive Backstepping-Sliding Mode Control (DAB-SMC) scheme for positioning of a pneumatic cylinder regulated by two types of PWM-solenoid valves is experimentally investigated. The goal is to study the compromise in controller’s performance as the system moves from using a proportional valve to employing the low-cost PWM-solenoid valves. Sinusoidal and multiple-step inputs are used as the reference position trajectories. Experimental results show that the DAB-SMC scheme works best with the proportional valve. The performance, however, deteriorates by more than twofold, once the system utilizes PWM- solenoid valves of 3/2-way or 2/2-way configurations. From this study, tradeoff between performances of different types of valves applied on a DAB-SMC scheme-controlled servo positioning system is successfully documented. This information helps to configure appropriate servopneumatic system for positioning applications. |
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