Wide-range high-precision high dynamic response eddy current displacement sensor and implementation method
A technology of a displacement sensor and a realization method, which is applied in the direction of instruments, measuring devices, and electric devices, etc., which can solve the problems of small output signal range, low anti-interference, and low sensitivity of inductance probes, so as to improve frequency response performance and reduce Good sampling rate and stability
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[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings.
[0032] like figure 1 As shown, the structure of the large-range, high-precision and high-dynamic-response eddy-current displacement sensor includes: AC resonant booster bridge, amplitude stabilization circuit, amplitude compensation and addition circuit, quadrature sampling trigger signal generation circuit and high-speed sampling processor; described
[0033] The AC resonant step-up bridge is composed of a resonator, a resistor R2 connected in parallel with the resonator, and a capacitor C1 and a resistor R1 connected in series with the resonator; the resonator is composed of an inductance probe Lx and two series capacitors C2 and C3;
[0034] The amplitude stabilization circuit is composed of a variable gain amplifier 4, a synchronous detection ...
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