Title :
On `Comparison and extensions of control methods for narrow-band disturbance rejection´
Author :
De Nicolao, Giuseppe ; Lorito, Fabrizio ; Strada, Silvia
Author_Institution :
Dipartimento di Inf. e Sistemistica, Pavia Univ., Italy
fDate :
7/1/1994 12:00:00 AM
Abstract :
(See IEEE Trans. Signal Processing, vol.40, p.2377-2391, 1992) surveyed several control methods for rejection of narrow-band disturbances. In particular, the authors introduced a method, called disturbance modeling (DM), which is a linear quadratic (LQ) optimization technique hinging on a state-space model of the disturbance. In the present paper, it is demonstrated that the DM design methodology proposed by Sievers and von Flotow leads to an unsolvable optimization problem. Furthermore, it is suggested how to modify the LQ cost functional in order to obtain an effective DM disturbance rejection scheme. Duality between DM and the approach based on frequency shaped cost functionals is concisely discussed
Keywords :
control theory; interference suppression; optimisation; signal processing; state-space methods; controller; cost functional; disturbance modeling; duality; frequency shaped cost functionals; linear quadratic optimization; narrow-band disturbance rejection; state-space model; Adaptive control; Control systems; Cost function; Delta modulation; Design methodology; Frequency; Narrowband; Optimal control; Optimization methods; Riccati equations;
Journal_Title :
Speech and Audio Processing, IEEE Transactions on
