Vibration control of rotor systems with noncollocated sensor/actuator by experimental design

This paper presents a controller design methodology for vibration suppression of rotor systems in noncollocated sensor/actuator configuration The methodology combines the experimental design method of quality engineering and the active damping control technique such that their advantages in implementation feasibility and performance-robustness can be integrated together. By using the locations of sensor/actuator and the feedback gains as design parameters, the controller design is shown to achieve a near optimal performance within the two-sigma confidence among all possible parameter combinations. Compared with Le-based designs, the controller order is smaller and it is applicable to systems in an operation speed range. In addition, neither preselected sensor/actuator location(s) nor state measurement/estimation is needed.