ICA  Vol.4 No.4 , November 2013
General Concave Integral Control
ABSTRACT

In this paper, a class of fire-new general integral control, named general concave integral control, is proposed. It is derived by normalizing the bounded integral control action and concave function gain integrator, introducing the partial derivative of Lyapunov function into the integrator and originating a class of new strategy to transform ordinary control into general integral control. By using Lyapunov method along with LaSalle’s invariance principle, the theorem to ensure regionally as well as semi-globally asymptotic stability is established only by some bounded information. Moreover, the highlight point of this integral control strategy is that the integrator output could tend to infinity but the integral control action is finite. Therefore, a simple and ingenious method to design general integral control is founded. Simulation results showed that under the normal and perturbed cases, the optimum response in the whole domain of interest can all be achieved by a set of the same control gains, even under the case that the payload is changed abruptly.


Cite this paper
B. Liu, X. Luo and J. Li, "General Concave Integral Control," Intelligent Control and Automation, Vol. 4 No. 4, 2013, pp. 356-361. doi: 10.4236/ica.2013.44042.
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