Device for enhancing anti-interference capability of transmission signal of motor sensor and device for enhancing anti-interference capability of transmission signal of motor sensor

Abstract

The invention discloses a device for enhancing an anti-interference capability of a transmission signal of a motor sensor and a device for enhancing the anti-interference capability of the transmission signal of the motor sensor. The device comprises a sensor signal conditioning device, an optical fiber and an optical signal receiving device, wherein the sensor signal conditioning device is connected with the motor sensor and is used for receiving an output signal of the motor sensor and converting the output signal of the motor sensor into an optical signal to be output; the input end of the optical fiber is connected with the sensor signal conditioning device, and the output end of the optical fiber is connected with the optical signal receiving device and is used for transmitting the optical signal output by the sensor signal conditioning device to the optical signal receiving device; and the optical signal receiving device is connected with a motor controller and is used for receiving the optical signal transmitted by the optical fiber, converting the received optical signal to an electric signal and transmitting the electric signal to the motor controller. According to the device disclosed by the invention, the influences on a transmission signal, caused by factors including surrounding transmission environments and the like can be greatly reduced in a long-distance transmission process, and the anti-interference capability of the transmission signal between the motor sensor and the motor controller is enhanced.

Description

technical field [0001] The invention relates to the technical field of sensor signal transmission, in particular to a device and method for enhancing the anti-interference ability of motor sensor transmission signals. Background technique [0002] Switched reluctance motors usually use photoelectric sensors, Hall sensors, rotary encoders or absolute encoders. The output signals of these motor sensors generally need to be processed by electronic circuits, and then transmitted to the motor controller, or directly transmitted to the motor controller. Motor Controller. The motor controller calculates the angular position of the motor according to the received motor sensor signal, so as to realize the control of the speed and torque of the motor. [0003] The signal transmitted by the motor sensor to the motor controller is generally a voltage signal or a current signal. When the transmission distance is long, the interference from the surrounding transmission environment is mor...

AI Technical Summary

Problems solved by technology

[0003] The signal transmitted by the motor sensor to the motor controller is generally a voltage signal or a current signal. When the transmission distance is long, the interference from the surrounding transmission environment is more serious, so that the transmission signal received by the motor controller is easily interfered, resulting in motor failure. Errors occur in the calculation of the angular position of the motor by the controller, which reduces the control accuracy of the motor controller for the speed and torque of the motor. In severe cases, the motor cannot even operate normally.

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