Temperature compensation simulation of ultrasonic transducer based on LMS

In the ultrasonic application fields of wind speed and distance measurements,temperature changes can cause changes of transmission characteristics of ultrasonic transducers,thus affect the measurement accuracy.Aiming at this problem,a simulation experiments are done to study how the parameters of ultrasonic transducer equivalent circuits change with temperature and how the changes affect the transmission characteristics.The main factors are also got .And then the Minimum Mean Squared Error(LMS) adaptive filter algorithm is adopted to compensate the transmission characteristics of the ultrasonic transducers based on the characteristics of adaptive algorithms.The results show that the transmission characteristics are affected by the dynamic capacitances and dynamic inductances mainly in the condition of single factor changing ,and LMS algorithm can compensate the transmission characteristics of ultrasonic transducers and reduce the temperature effect effectively