Study And Design A Robust Control System In Elevation And Azimuth Application For An Antenna Electronic Scanning Radar System

This research aims to design a controller for an Antenna Electronic Scanning Radar system in azimuth and elevation(AZ-EL)which are the main features used in order to the pursuit targets.However,there still remains real challenges in tracking objects where the overall system suffers from disturbances such as high-speed winds and moreover low performance under load variations due to moment of inertia.These are major components which must be known from the controller and the reason why it must be robust against all these changes,this is the resolution intended to be in the present study for efficient performance of AZ-EL pedestal in terms of accurate positioning,this also justifies the use of robust controller because of its most important advantage which is the non-sensitivity to the variations of the reference input.The controller will regulate the output position of pedestal's actuators.Permanent magnet synchronous motors(PMSMs)are taken into consideration as the best choice for satisfaction of control objectives.Where a robust sliding mode control is designed via defining suitable sliding surface and calculating the corresponding input values.While the designed controller is regulating the current of a PMSM motor the orientation of the antenna is,in other hand,adjusted representing the tracking position,meaning,computation and comparison in the controller's algorithm for more accuracy in view of the non-linearity of the motors via model simulating.Last but not least,the controller's performance is tested in real time simulation.The reference azimuth and elevation data are chosen randomly as tracking mission;so as to prove effectiveness of the proposed approach for controlling pedestals.The project deal with the dynamics of the system and the design of the controller,both running in the same 3D real time simulation environment.To this end we need to establish a close correlation in order to get the desired results by NCSLab.This network supports the configuration of control systems in a diagram assembled on Web page known as Web Con Sim.