The permanent magnet rotating (angular) acceleration sensor and a new method of mechanical rotating system torsional vibration measuring

According to the basis measurement problem of rotating machinery system in tangential vibration at present, this article presented 3 types of structure of the permanent magnet rotating (angular) acceleration sensor, and on the basis of introducing the operating principle of sensor, this article also analyzed the sensor error and introduced the thinking of sensor characteristics system parameter normalization. Because the sensor is based on the principle of electromagnetic induction, it is only sensitive to the rotation acceleration or rotation angle acceleration. Moreover, the sensor is simple in structure, convenient in use and different in structure, which can meet the measurement requirements of rotation (angle) acceleration of different rotating machinery systems. Finally, according to two practical application examples of the sensor in this article, the sensor proved the practicality and feasibility.