Motor displacement sensor based on eddy current principle
A technology of displacement sensor and eddy current, which is applied in the field of displacement sensor, can solve the problems of being unable to meet the detection requirements, having no practical significance, and the measurement accuracy and sensitivity of small displacement cannot meet the requirements, so as to achieve stable and reliable output results, convenient measurement and Effect of adjusting and suppressing the influence of harmonics and spikes
Pending Publication Date: 2022-06-03
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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The invention discloses a motor displacement sensor based on an eddy current principle, relates to the technical field of displacement sensors, and provides the following scheme that the motor displacement sensor comprises a probe of the sensor, an extension cable and a front-end device, the probe is connected with the front-end device through the extension cable, the detection end of the probe is close to a detected object, and the probe is connected with the front-end device through the extension cable. A probe coil is arranged at the front end of the probe, the probe is formed by winding an enameled copper wire on a probe framework, the probe framework is made of a polytetrafluoroethylene material due to the requirement of the electromagnetic property of the probe coil, and the probe coil is arranged in a shell made of stainless steel. And an extension cable for connecting the sensor probe and the front-end device is a high-temperature-resistant radio frequency cable. The design of the sensor is mainly based on the eddy current principle, meanwhile, a resonance circuit and a differential circuit are utilized to improve the anti-interference performance, measurement results are further processed through filtering and linear compensation, and most of the prior art cannot meet the complex detection requirements.
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