Generalized synthesis of control systems of zero-order/instantan

Details Generalized synthesis of control systems of zero-order/instantan Generalized synthesis of control systems of zero-order/instantan

1990-02-12

1991-05-28

Wong, Peter S.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

323285, 318615, 318798, 388809, H02P 500, H02P 700

Patent

active

050199587

ABSTRACT:
A generalized method of synthesizing control systems of instanteous response and zero error in both transient and steady state with respect to input commands and of infinite disturbance rejection ratio with respect to external distrubances, carried out in the state-space vector-matrix form for generality obviousness and applicability, comprising terms in a form of local positive feedback state variable differentiators for cancelling the derivative terms in each of the n first order differential equations describing an n-th order system in the state-space representation and thus yielding a zero-order system with the instantaneous response to the input command column vector, and further comprising terms in form of local controller positive feedback control loops for cancellation of a system matrix and thus providing a load/disturbance-invariant system with associated infinite disturbance rejection ratio. All local positive feedback loops are closed within a negative feedback control loops to ensure stability. The generalized synthesis method is applied in synthesizing electric motor drive systems, including dc, synchronous and asynchronous ac, and step motor drive systems, of zero-order dynamics/instantaneous response and infinite distrubance rejection ratio with respect to a load torque changes while operating in an open-loop mode with respect to the variables under the control.

REFERENCES:
patent: 4885674 (1989-12-01), Varga et al.
patent: 4967134 (1990-10-01), Losic et al.
patent: 4990001 (1991-02-01), Losic et al.

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