Abstract
In nowadays the pneumatic controlled systems are widely used in industrial applications where valves must be operated, where there is a fire ignition risk, or in different automation systems where a positioning action is desired. The paper presents the experimental results of a pneumatic actuator controlled by a proportional control valve. The goal of the paper is to compare the experimental results with the numerical simulation results and to improve the mathematical model associated with the experiment.
Highlights
Electropneumatic control systems have the advantage that can be miniaturized and embedded in themselves electronic elements which allow them to be used in complex control systems [1]
In our previous studies [3,4,5] we considered the dynamic behaviour of a pneumatic actuator, controlled by a proportional valve, when different types of input signals where applied
The relatively poor resolution (10 mm) of the drive system could be given by friction in the cylinder or by the performance of the servo controller. Another explanation of this result is given by the fact that the signal generator did not allow a control voltage of around 5 V which is the voltage corresponding to the neutral zone of the servomechanism
Summary
Electropneumatic control systems have the advantage that can be miniaturized and embedded in themselves electronic elements which allow them to be used in complex control systems [1]. New structures of pneumatic drives combined with electric components open the possibility for the use of programmable logic controller (PLC). This is an important advantage to use the electropneumatic systems in advanced control strategies which are characteristic to “Industry 4.0” philosophy [2]. This new perspective of electropneumatic devices used in so many industrial applications, medical systems, automotive structures, justify the theoretical and experimental approach of their study. The aim of this work is to extend the theoretical studies of the pneumatic actuator controlled by proportional valve, in open loop and control loop, with experimental tests. The electropneumatic servomechanism was loaded with variable technological force which can appear during the technological process or in an unexpected moment of time [4, 5]
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