Browsing by Author "HO, SJ"

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CONTROLLER-DESIGN FOR LINEAR-MULTIVARIABLE SYSTEMS WITH PERIODIC INPUTS
(1992-01-01)
LIN, CA
;
HO, SJ
;
電控工程研究所
;
Institute of Electrical and Control Engineering
The authors propose a controller design method for linear multivariable systems with periodic inputs. The periodic inputs may have different periods in different input channels. The plant is assumed to be minimum phase but may be unstable. In addition to achieving closed-loop stability and input-output decoupling, the design is to satisfy prespecified bounds on relative steady-state tracking error and sensitivity function. The paper shows that, for minimum phase plants, it is possible to achieve arbitrarily small sensitivity over large bandwidth and arbitrarily small (integral square) tracking error for piecewise continuous periodic inputs in each channel. The paper proposes a design algorithm and gives an illustrative example.
DECOUPLING CONTROLLER-DESIGN FOR LINEAR-MULTIVARIABLE SYSTEMS WITH PERIODIC INPUTS
(1995-06-01)
HO, SJ
;
LIN, CA
;
電控工程研究所
;
Institute of Electrical and Control Engineering
We propose a decoupling controller design method for linear multivariable systems with periodic inputs. The plant may be nonminimum phase, and the periodic inputs may have different periods in different input channels. In addition to achieving closed-loop stability and input-output decoupling, the design is to satisfy prespecified sensitivity bound and tracking error bound for a class of periodic inputs in each channel. With the proposed design approach, an n-channel MIMO design problem is reduced to n SISO ones in which design specifications can be independently achieved. A design algorithm is proposed, and an illustrative example is given.