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Nature inspired algorithms are among the most potent and robust algorithms for optimization for solving the real life problems. This paper introduces the Bat algorithm for the optimization based design of the PID controllers. The optimized PID controller has been implemented for liquid level control system which finds a wide application in petrochemical,(More)
The power system is a dynamic system and it is constantly being subjected to disturbances. It is important that these disturbances do not drive the system to unstable conditions. Due to certain disturbances, electromechanical oscillations of small frequency set up. The kind of stability involved due to oscillations falls under small signal stability. The(More)
Nature inspired algorithms are nowadays aiding in solving several complex multi-objective engineering problems. In this paper, robust pitch control of a flight control system has been designed using fractional order controllers. In order to obtain the optimal values of the controller gains & orders such that the system offers robust response, the mixed(More)
The paper reports on application of two available numerical solvers-HIFOO and HINFSTRUCT for structured and fixed-order controller design, to a feedback linearized Continuous Stirred tank Reactor (CSTR). These solvers constitute a most practical exploitation of the research in numerical techniques for non-convex non-smooth optimization and results in design(More)
Nowadays there is a substantial increase in the use of UAVs in aerospace industries and several diverse applications like defense, disaster management, aerial photography, logistics, etc. and the diversity of applications is proliferating. But the non-linear & continuously time varying dynamics of these UAVs significantly affect the tracking of flight(More)
A new technique of designing a robust PID and Polynomial controller for DC motor speed control is proposed. The proposed approach poses the design problem as fixed structure robust controller and mixed sensitivity H ∞ method. Performance weights are designed based on the closed-loop objective and performance requirements which are normally applied in H ∞(More)
The objective of the paper is to design the robust discrete H ∞ controller for dc motor position control using Frequency-Domain Robust Controller Design Toolbox. In this paper, the time performance characteristics of 2 nd and 3 rd order controller has been compared by taking dc motor as a design example. The paper aims at demonstrating and simple modelling(More)