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Higher Harmonic Control (HHC) has been considered for many years a valid approach for the design and the implementation of active rotor control laws aiming at the attenuation of helicopter vibration and noise and at the improvement of rotor performance. Its implementation requires knowledge of the frequency response relating the control input to the output measurements at the disturbance frequency...
This paper focuses on the design of a linear robust controller for a mechatronic system in the presence of real parametric and non-parametric frequency-dependent uncertainties. An Hinfin loop-shaping control design procedure is compared with a signal-based Hinfin control. The comparison of the robust controllers is carried out in the context of an active magnetic bearing rotor system. Experimental...
The permanent magnet synchronous motor (PMSM) drive system using adaptive backstepping fuzzy neural network (ABFNN) control is investigated for the tracking of periodic reference inputs. First, the field-oriented mechanism is applied to formulate the dynamic equation of the PMSM servo drive. Then, an adaptive backstepping approach is proposed to compensate the uncertainties in the motion control system...
By combining backstepping techniques and small-gain theorem, a nonlinear controller for generator system with dynamic uncertainties is proposed to make rotor angle and voltage stable. For the high-order model of generator system, the excitation control is designed by the modified backstepping techniques and dynamic uncertainties are controlled by the small-gain method, which render the whole closed-loop...
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