In the paper, a novel adaptive filter design for a linear time-varying system is proposed. The authors introduce a robust height order estimation (HOE) to which they apply the HOE for a linear time-invariant (LTI) system by using er-modification and show the sufficient condition for stability. Since the robust HOE can estimate the differential of any degree, 6(p\f) from a parameter 6(t) directly, the number of control parameters does not increase, and all parameter vectors 0((i)(i) can converge to an unknown vector tfp\t) in the case of 0(t) -0(f) -0. Furthermore, the proposed algorithm does not require the structure of unknown parameters. Finally, the system is compared to the conventional method by numerical simulation and the effectiveness is demonstrated.
ASJC Scopus subject areas
- Control and Systems Engineering
- Electrical and Electronic Engineering