Abstract
An actuator is a device that which provides control over certain automation systems and also provides tuning in movement or positioning in various applications like manufacture of valves, motor, wastewater treatment plants, onboard electronics based on the type of configuration of type of actuators. Out of the available types of actuators, linear Electro Mechanical Actuators (EMA) is a powerful and advanced tool which provides optimal solution for the field of automation, various applications where high speed, high precision with control are required. This paper proposes to have velocity feedback system to entire function of EMA’s in order to improve its functionality, and thus enhances the efficiency. This paper also proposes modeling and simulation of normal conventional linear Electro Mechanical Actuator and velocity feedback controlled EMA and compares the results in MATLAB/SIMULINK.
Highlights
In the field of control system engineering and automation, actuators play a key role in positioning and controlling of systems
An intelligent controller is a PD Controller connected with feedback loop (Bennouna .O, 2013), and gives a signal comparing positional feedback signal with the reference one
A dc brushless motor is preferred in the flight control systems, aviation, navigation purposes
Summary
In the field of control system engineering and automation, actuators play a key role in positioning and controlling of systems. Though there are different types of actuators like hydraulic, pneumatic, electro hydraulic, an extensive based application of novel, and optimized electric actuators such as Electro Mechanical Actuators (EMA) (Battula, 2020) are preferred due to its various advantages like, overall weight is reduced, maintenance is simplified, which is often contaminant, flammable or polluting, can be eliminated These types and configurations of actuators definitely gets changed based on its features like output torque, maximum holding force, maximum speed, ration of protection, size and type of application required. Taking all constraints and parameters of EMA into account, and in order to change the dynamics of actuator system, bandwidth of EMA, and as the main foremost goal is to get optimal phase lag, good frequency response system, stability, velocity feedback control (Latchoumi, 2016) is preferred after careful investigation on various feedback control systems. This paper presents the results in MATLAB/SIMULINK without and with velocity feedback systems and the basic block diagram of Electro Mechanical Actuator with position and velocity feedback is shown in the fig.[1]
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