CONTROL SYSTEM AND METHOD FOR RESONANT APPARATUS SUCH AS ADAPTIVE TUNABLE VIBRATION ABSORBERS

摘要

A control system and method for resonant apparatus such as Adaptive Tuned Vibration Absorbers (ATVAs). In the control method aspect, which has applicability beyond ATVA control, two input signals in channels (39, 41) are maintained in a phase relationship of about 90 degrees via input from a reference sensor (36). The system includes a base sensor (40) providing a base vibration signal, a reference sensor (36) for providing a signal synchronized with the vibration source, a mass sensor (38) for providing a vibration signal of the tuning mass (43), and a preferably digital electronic controller (42) for demodulating the signals with quadrature waveforms generated from a waveform generator (47) to generate a control signal to the resonant apparatus, e.g. an ATVA (35). Optionally, detuning is accomplished via an offset associated with the method.