Liu, Yan; Söffker, Dirk - In: Mathematics and Computers in Simulation (MATCOM) 82 (2012) 5, pp. 847-857
In this paper, a variable gain design approach for the high-gain disturbance observer, called Proportional-Integral-Observer (PI-Observer), is proposed to solve the problem of choosing suitable observer gains. The high-gain PI-Observer is successfully applied to estimate unknown inputs of...