Research on the time-domain response characteristics of RLC resonant circuit based on magnetostrictive transducer under sinusoidal excitation

Submerged arc furnace, also known as electric arc furnace or resistance electric furnace, it is an industrial electric furnace with continuous operation and huge power consumption. It is mainly used for smelting calcium carbide, industrial silicon, ferrosilicon, silicomanganese, ferronickel, ferrochrome and other important modern industries. In order to solve the problems of the accuracy of length measurement in the submerged arc furnace and the difficulty of the upper computer to collect and process the acoustic signal, In this paper, the loss characteristics and propagation characteristics of the ultrasonic in the submerged arc furnace and the time-domain response characteristics of the RLC resonant circuit based on the magnetostrictive transducer under the excitation of the sinusoidal signal are optimized. The study found that in the under-damped response, the time for the magnetostrictive transducer RLC resonant circuit to reach the steady-state response has an exponential relationship with the external resistance of the resonant circuit. In other words, a suitable external resistance can be selected under the under-damped response. The external resistance value not only ensures that the time for the current to reach a steady state is less than 200us, but also ensures that the impedance of the loop is small enough to obtain a current that meets the requirements.