International Journal of Information Technology and Computer Science (IJITCS)
IJITCS Vol. 10, No. 1, 8 Jan. 2018
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Optimal PID Design for Control of Active Car Suspension System
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Author(s)
Index Terms
PID Control, Fractional-order PID control, Particle Swarm Optimization, Differential Evolution, Gravitational Search Algorithm, suspension system, quarter-car
Abstract
This research is based on the determination of the parameters of the PID and fractional-order PID controllers designed for quarter-car suspension system. Initially, without considering the active suspension structure, the performance of the passive suspension system under different wheel load index is presented by using the transfer function of the system. Then, by adding a wheel-load, the classical PID controller is designed and applied to the current controlled hydraulic actuator as a part of active suspension system. The parameters of this controller are determined by three heuristic optimization algorithms; Particle Swarm Optimization (PSO), Differential Evolution (DE) and Gravitational Search Algorithm (GSA). As the second part of this study after evaluating the performance of classical PID controller, fractional-order PID controller is designed and applied to the problem to improve the performance of the classical PID controller. Similarly, the parameters of this controller are also obtained by using the same optimization algorithms. In the paper, for modeling the road, instead of sinusoidal (road with hill) or random changes, a saw tooth signal is preferred as a relatively harder condition. Implementation results are showed that the performance of the fractional-order PID controller is much better that PID controller and also instead of relatively complex and expensive controller, it is possible to use fractional-order PID controller for the problem.
Cite This Paper
O. Tolga Altinoz, A. Egemen Yilmaz, "Optimal PID Design for Control of Active Car Suspension System", International Journal of Information Technology and Computer Science(IJITCS), Vol.10, No.1, pp.16-23, 2018. DOI:10.5815/ijitcs.2018.01.02
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