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Description
The Grey Wolf Optimisation algorithm (GWOa) was presented for optimal tuning of Proportional Integral Derivative controller (PIDc) targeted at enhancing the performance of satellite system. Control systems are important components whose tasks involved maintaining the satellite at orbit, playing crucial roles of regulating the positioning precision as well as robustness to uncertainties for smooth system operation. Focus was directed at the simple and popular schemes due to complexities associated with vast majorities of the proposed schemes making practical implementation impossible. The PIDc methods are popular and relatively simple although the nature of many systems contain nonlinearities that are hardly to ignore which include the satellite systems. The study was directed at simulations with the well-known software MATLAB/SIMULINK. The work was an optimization problem directed at minimizing the amount of error resulting between the desired satellite position and its actual position by carefully tuning the gains of the the PIDc; viz: proportional Gp, integral Gi, derivative Gd ,utilising the GWOa. The proposed control scheme was examined with no controller (NOC) and without optimising the parameter of the controller; that is with the PIDc. Results indicated success of the implementation which stabilises the system which was oscillatory in nature with NOC. It converges around the fourth iteration with an error amount of about 0.2146. The system converges fast resulting in the gains of the controller with good performance of 2% overshoot and settling time of about 2s. Applying the normal PIDc produces an overshoot of around 17% and a settling time of about 15s respectively. The optimized controller created an improvement of around 15% in terms of overshoot suppression and greater than 50% regarding the settling time which are remarkable. Therefore, the study portrayed that the GWOa can handle such systems, perhaps with further research could be made even better.