Oscillation Compensator using a new Controller PI-Fuzzy Control for Pneumatic Stiction Valve
نویسندگان
چکیده
منابع مشابه
Fuzzy gain scheduling of PID controller for stiction compensation in pneumatic control valve
Inherent nonlinearities like, deadband, stiction and hysteresis in control valves degenerate plant performance. Valve stiction standouts as a more widely recognized reason for poor execution in control loops. Measurement of valve stiction is essential to maintain scheduling. For industrial scenarios, loss of execution due to nonlinearity in control valves is an imperative issue that should be t...
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Stiction is a well known problem of the process performance. Compensate its effect is essential, because most of sticky valves cannot be replaced and they remain working for months or years. The scope of this work is to propose a novel methodology to compensate stiction effects, through the modification of the controller (PI) block in the control loop. The proposed approach is based on the two ...
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Inexpensive digital valves are implemented to accurately control the position of a pneumatic cylinder using pulse width modulation (PWM) technique. A fuzzy PI controller is designed and implemented to overcome the nonlinearity inherited in the system due to air compressibility, dry friction and the nature of the digital valves. The actuator under control is a vertical double-acting single-rod p...
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Pneumatic control valves are still the most used in process industries due to their low cost and simplicity. This paper presents a design procedure of a PID controller for a pneumatic control valve. For comparison, P and PI controllers are also utilized for the control valve. The bond graph method is used to model the control valve, in order to compare the response characteristics of the valve....
متن کاملA new stiction compensation method in pneumatic control valves
AbstractIn this paper, a new compensator is designed so as to eliminate the effect of stiction in the control loop. A wellknown stiction compensation method is proposed that reduces variability both at process variable and valve stem movement. Pneumatic control valves are widely used in the process industry. Stiction is the most common and one of the long-standing problems in the pneumatic cont...
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ژورنال
عنوان ژورنال: IOSR Journal of Electrical and Electronics Engineering
سال: 2017
ISSN: 2320-3331,2320-3331
DOI: 10.9790/1676-1202033137