GIANT MAGNETOSTRICTIVE TRANSDUCER RESONANT FREQUENCY TRACKING SYSTEM AND METHOD

摘要

A giant magnetostrictive transducer resonant frequency tracking system (100) and method. A compensation circuit (40) and an electrical signal sampling circuit (50) are connected in series in a loop of the giant magnetostrictive transducer resonant frequency tracking system (100). The electrical signal sampling circuit (50) measures and acquires an electrical signal as sampled data, and returns, via a data interface, the sampled data to a computer (60) for processing. Related parameters, e.g. a tracking increment, a tracking decrement, and an acquisition threshold, are configured such that the giant magnetostrictive transducer resonant frequency tracking system (100) can be used to track a resonant frequency of a giant magnetostrictive transducer in real time. The giant magnetostrictive transducer resonant frequency tracking method is used, when a load change or a rise in temperature causes frequency drift of the giant magnetostrictive transducer resonant frequency tracking system, to track the resonant frequency within ranges of tracking accuracy and tracking sensitivity parameters, thereby maximizing energy conversion efficiency.