POSITION CONTROL OF AN EXPERIMENTAL SERVO PNEUMATIC ACTUATOR, USING SLIDING MODE CONTROL

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NAJAFI FARID; FATHI MORTEZA

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Journal: Journal of Aerospace Mechanics Year:2007 | Volume:3 | Issue:3 Page(s): 47-60

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Information Journal Paper

Title

POSITION CONTROL OF AN EXPERIMENTAL SERVO PNEUMATIC ACTUATOR, USING SLIDING MODE CONTROL

Author(s)

NAJAFI FARID | FATHI MORTEZA | Issue Writer Certificate

Keywords

ACTUATORQ2

SERVO PNEUMATICQ3

POSITION CONTROLQ2

SLIDING MODE CONTROLQ1

PULSE WIDTH MODULATIONQ3

Abstract

In this paper, two POSITION CONTROLlers have been developed for a double-acting pneumatic cylinder with two 3/2 on/off solenoid valves, using PWM method. The first one is a PID controller, whose gains have been obtained by Zighler-Nicoltz method. The second one - a SLIDING MODE CONTROLler (SMC) - has been designed based on a specific mathematical model, where an appropriate PWM method has been applied to overcome non-linearity’s such as time delay, during opening or closing of valves, and dead band due to station. The results of experimental tests on the closed loop system with the PID controller illustrate that the PWM method is suitable for servo control purposes with high accuracy. Furthermore, high accuracy was also achieved in experimental results in response to step inputs. Small values of maximum and Root Mean Square (RMS) positioning errors in response to sinusoidal inputs with various frequencies show better accuracy of SMC controller in comparison with the PID one. Good performance of the developed SMC is even more evident as frequency increases. These results also show considerable improvements in accuracy in comparison with the results of previous works on costly proportional valves.

Cites

DESIGN OF SLIDING MODE AND LQR CONTROLLERS FOR AN HVAC SYSTEM

References

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APA: Copy

NAJAFI, FARID, & FATHI, MORTEZA. (2007). POSITION CONTROL OF AN EXPERIMENTAL SERVO PNEUMATIC ACTUATOR, USING SLIDING MODE CONTROL. AEROSPACE MECHANICS JOURNAL, 3(3), 47-60. SID. https://sid.ir/paper/101737/en

Vancouver: Copy

NAJAFI FARID, FATHI MORTEZA. POSITION CONTROL OF AN EXPERIMENTAL SERVO PNEUMATIC ACTUATOR, USING SLIDING MODE CONTROL. AEROSPACE MECHANICS JOURNAL[Internet]. 2007;3(3):47-60. Available from: https://sid.ir/paper/101737/en

IEEE: Copy

FARID NAJAFI, and MORTEZA FATHI, “POSITION CONTROL OF AN EXPERIMENTAL SERVO PNEUMATIC ACTUATOR, USING SLIDING MODE CONTROL,” AEROSPACE MECHANICS JOURNAL, vol. 3, no. 3, pp. 47–60, 2007, [Online]. Available: https://sid.ir/paper/101737/en

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