Frequency versus time domain adaptive control algorithms for the active control of helicopter structural response

Aims to identify possible improvements to an existing Staple´s (1989) structural vibration control strategy, which concerns with minimising the structural vibration of a helicopter, and is achieved by measuring the vibration at a number of points on the fuselage using accelerometers. This information is processed by a multivariable control algorithm which calculates a set of control forces for a set of hydraulic actuators, located at strategic points in the structure. Vibration reductions result from the combination of the combination of the actuator control forces with those induced in the fuselage by the rotor