3 results about "Magnetostrictive transducers" patented technology

The present application relates to sludge treatment technical field, specifically to a kind of sludge resourceful treatment device for municipal engineering, including processing box, fixedly arranged fixed shell in the inside of processing box, and rotating inner container is rotationally arranged in the inside of fixed shell.The present application is continuously rotated by rotating inner container in the inside of fixed shell, cooperate with the polygonal wave-shaped reflecting surface specially provided in inner wall, make sludge continuously dynamic cross microwave wave peak and trough area in spiral falling process, the originally fixed standing wave node is scattered, microwave energy is uniformly projected to the full circumferential surface of sludge without dead angle, and heat energy utilization is greatly improved;At the same time, magnetostrictive transducer embedded in the outer wall of rotating inner container rotates synchronously with inner container, to ensure that ultrasonic energy directly acts on the core of sludge flow field that is turned over, microjet and shock wave generated by ultrasonic cavitation effect are used, and microwave thermal effect produces significant synergistic effect, and the process of sludge cell wall is accelerated.

This invention belongs to the field of magnetic variable measurement technology, specifically relating to a power-driven compensation method and system for monitoring the characteristics of magnetostrictive loads. The method includes: obtaining a reference zero point for the evolution of magnetic performance under cold conditions based on the center frequency of the electromagnetic system; calculating the current dominant frequency impedance magnitude and phase difference using an electrical parameter characterization method, and obtaining a thermal drift index reflecting the degree of hysteresis loop distortion in conjunction with the reference zero point; obtaining correction factors of various orders based on the thermal drift index and the average output power at the current moment, and dynamically updating the coefficient vector of the inverse model; constructing a pre-distortion driving voltage signal that can cancel nonlinear interference using the new coefficients and an ideal guided wave voltage sequence, and inputting it to a power amplifier to drive the magnetostrictive transducer. This invention solves the problem of pre-distortion failure in existing technologies under variable temperature conditions, significantly improving the signal-to-noise ratio of high-power, long-distance guided wave detection.