This paper focuses on the design of a low order robust stabilizer for the tracking/disturbance
rejection problem based on the internal model principle in the time varying setting. The
existing stabilization approaches are either lack of robustness or results in a high order
design, which limits the potential for broad application. The method proposed in this paper
overcomes this bottleneck by taking advantage of the unique structure of the time varying
internal model based control system. Instead of using a dynamic stabilizer with high order …

This paper focuses on the design of a low order robust stabilizer for the tracking/disturbance
rejection problem based on the internal model principle in the time-varying setting and its
application to the hydraulic pressure tracking with varying frequency. The problem of this
kind known as output regulation generally consists of two major parts: internal model unit
construction and stabilizer design. While the construction of the time-varying internal model
unit is non-trivial by itself and a very recent research outcome enables its synthesis for a …