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—this paper addresses on design of an optimal proportional integral derivative (PID) controller by applying Lyapunov approach. The optimal PID controller is acquired through minimizing an augmented integral squared error (AISE) performance index that contains control error and at least first order error derivative, and even may contain n orders error(More)
Electric motors are the core driving units for high speed train consisting of locomotives and carriages. This paper investigates high precision speed control of the driving motor systems. More specifically, the problem of speed and back e.m.f control of motors via automatically regulating armature and field voltage is studied. The underlying system is(More)
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