Frequency response data based optimal control using the data based symmetric root locus

This paper describes a data-based frequency domain optimal control synthesis method. Plant frequency response data is used to compute the frequency response of the controller using a spectral decomposition of the optimal return difference. The underlying cost function is selected from a databased symmetric root-locus, which gives insight in the closed-loop pole locations that will be achieved by the controller. A simulation study shows the abilities of the proposed method.