(electromagnetic, hydraulic, pneumatic, etc.). A pneumatic control valve is one of the widely used control valves [1], and consists of a stem, whose position is varied to increase or decrease the opening in the pipe thereby varying the flflow rate of flfluid flflowing through the pipe [2]. The pressure exerted on the diaphragm connected to the stem results in the movement of the stem. The pressure change is induced by varying the input current applied to the current to the pressure converter, which is the control signal from the controller whose variation is based on the sensor feedback and user input. It can be understood that a pneumatic control valve plays a vital role in the performance of any control loop. Deviation or malfunction of this would lead to a deviation in performance of the control loop and would lead to major problems in the by-product of the industry and hence losses. The causes for a control valve failure in a steam turbine are evaluated in [3]. The effffect of improper function of control valves in offffshore oil and gas sectors is discussed in the report by the Health and Safety Executive [4]. To understand the present scenarios of control valves in process industries and its effffect of faults on the process, a detailed survey was carried out. Reference [5] discusses the effffects Electronics 2019, 8, 1062; doi:10.3390/electronics8101062 www.mdpi.com/journal/electronicsElectronics 2019, 8, 1062 2 of 15 of valve-induced faults the performance of industrial loops. The effffect of dynamic constraints of a valve such as acceleration and jerks on the system performance is reported in [6]. The cause and effffect of stiction fault of a pneumatic valve on the system performance are discussed in [7]. The performance of a steam turbine is analyzed for variation in control valve and actuation system characteristics in [8]. Fault detection and diagnosis of valves are being carried out in many ways. Few of these are reported here; a method for detection of faults in valves in a high-pressure leaching process is discussed in [9]. Valve fault detection for a single stage-reciprocating compressor is discussed in [10]. Detection of a stiction valve fault is discussed in [11], using the pattern recognition technique. A sensor-less, control valve fault-detection method using an observer is discussed in [12]. In [13], fault detection and isolation in a pneumatic control valve used in a flflow process are performed using residual evaluation of wavelet transform signal derived from process parameters. Fault diagnosis in actuators is simulated on the Development and Application Methods for Actuator Diagnosis in Industrial Control System (DAMADICS) workbench using fuzzy logic algorithms. Valve clogging,