Home Blog In the Latest Study of Mo tor Encoder Technology, the Sensor Bearing Resets the Work

In the Latest Study of Mo tor Encoder Technology, the Sensor Bearing Resets the Work

Release time : 2018-02-23 02:14:04
With the widely application of the ac motor in industry and gradually occupied the dominant position, for the motor shaft of the motor speed, position and direction of the monitoring methods are constantly updated, demand for monitoring method is no longer accurate, but is required to withstand different electromagnetic environment, the different mechanical types of challenges. The company's technician, Phil Burge, describes how to design an integrated sensor bearing to overcome these problems while installing encoders on the shaft to provide a more compact solution. Although traditional encoder for many years has been used to measure the motor shaft speed, direction and position, they are basically bolt connection, need extra space on the motor shaft, moreover, these encoders are very vulnerable to mechanical shock load, and their measuring output may be local strong adverse effect of electric field and magnetic field. If you use a hall effect device to detect the speed of the motor shaft, bearing direction and location of the sensor technology is vulnerable to the interference of the magnetic field generated by the motor current, in the case of large industrial unit, the magnetic field is likely to be several hundred amperes. In order to solve the ac motor control application requirements of sensor bearing from SKF BMD series will be used for industrial vehicles, such as forklift) of deep groove ball bearings with pulse ring and sensor main body of the sensor component combination, formed a sensor bearing unit, the sensor main body including sensor components, protective amp original and embedded EM filter. These sensor bearing units use the hall effect technology to generate incremental encoder signals. The sensor body connected to the outer bearing ring provides protection for the hall effect unit and the control electronics to provide a precise incremental encoder signal from 14,000 to zero revolutions per minute. In addition, the sensor bearing unit can be applied to many kinds of mechanical environment, and can accept the challenge of multi-machine type.