A circuit for testing the installation of a turntable motor

Abstract

A circuit for detecting the installation of a turntable motor includes a data processing circuit, a high-frequency signal generation circuit, an analog signal conditioning circuit, and a reference voltage generation circuit. The input interface of the analog signal conditioning circuit is connected to the signal output terminal of an eddy current sensor. The analog signal conditioning circuit is connected to the data processing circuit, the high-frequency signal generation circuit, and the reference voltage generation circuit, respectively. The data processing circuit is connected to both the high-frequency signal generation circuit and the reference voltage generation circuit. The data processing circuit can determine whether the motor installation has reached an optimal state based on the digital voltage signal output by the eddy current sensor installed on one side of the motor stator. Simultaneously, the data processing circuit can combine the high-frequency signal from the high-frequency signal generation circuit and the square wave signal input from the analog signal conditioning circuit to determine the phase signal of the eddy current sensor, thereby assisting in the judgment of the motor's rotational zero-return error.

Description

Technical Field

[0001] This invention belongs to the field of automation technology, specifically relating to a circuit for the installation and testing of turntable motors. Background Technology

[0002] In various test turntables, motors are frequently used to achieve precise angular position rotation of each axis to provide accurate positioning of the product under test. However, the installation accuracy of the motor has a significant impact on the angular position accuracy of the turntable. Therefore, there is an urgent need for a detection circuit to detect the installation accuracy of the turntable motor, thereby evaluating the quality of the motor installation. Summary of the Invention

[0003] The purpose of this invention is to provide a circuit for testing the installation of a turntable motor, which evaluates the quality of the installation by detecting the displacement of the tooling reference surface on the rotor and the eddy current sensor on the stator during the rotation of the brushed motor.

[0004] The technical solution adopted to achieve the above objectives is a circuit for installation and testing of a turntable motor, including a data processing circuit, a high-frequency signal generation circuit, an analog signal conditioning circuit, and a reference voltage generation circuit; the input interface of the analog signal conditioning circuit is connected to the signal output terminal of the eddy current sensor, the analog signal conditioning circuit is connected to the data processing circuit, the high-frequency signal generation circuit, and the reference voltage generation circuit respectively, and the data processing circuit is connected to the high-frequency signal generation circuit and the reference voltage generation circuit respectively.

[0005] Furthermore, the analog signal conditioning circuit filters and converts the voltage signal output by the eddy current sensor to digital. The filtering process yields a sinusoidal signal with minimal interference, and the digital voltage data obtained after the analog-to-digital conversion is input to the data processing circuit. The data processing circuit controls the high-frequency signal generation circuit to generate a high-frequency square wave signal, which is then input to the analog signal conditioning circuit. The data processing circuit also controls the reference voltage generation circuit to generate a reference signal, which is input to the analog signal conditioning circuit. The reference signal is compared with the sinusoidal signal to generate a square wave signal, which is then input to the data processing circuit. The data processing circuit determines whether the motor installation has reached an optimal state based on the input digital voltage data. Simultaneously, the data processing circuit combines the high-frequency square wave signal and the square wave signal input from the analog signal conditioning circuit to determine the phase signal of the eddy current sensor, thereby assisting in the judgment of the motor's rotation zero-return error.

[0006] Beneficial effects

[0007] Compared with the prior art, the present invention has the following advantages.

[0008] This invention receives signals from an eddy current sensor installed on one side of the stator of a turntable motor, and can evaluate the quality of motor installation by detecting the displacement of the tooling reference surface on the rotor relative to the eddy current sensor on the stator side during motor rotation. Attached Figure Description

[0009] The invention will be further described in detail below with reference to the accompanying drawings.

[0010] Figure 1 This is a block diagram of the circuit architecture of the present invention;

[0011] Figure 2 This is a test schematic diagram of the present invention. Detailed Implementation

[0012] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0013] like Figure 1 , 2 As shown, a circuit for installation and testing of a turntable motor includes a data processing circuit 1, a high-frequency signal generation circuit 2, an analog signal conditioning circuit 3, and a reference voltage generation circuit 4. The input interface of the analog signal conditioning circuit 3 is connected to the signal output terminal of the eddy current sensor 7. The analog signal conditioning circuit 3 is connected to the data processing circuit 1, the high-frequency signal generation circuit 2, and the reference voltage generation circuit 4, respectively. The data processing circuit 1 is connected to the high-frequency signal generation circuit 2 and the reference voltage generation circuit 4, respectively.

[0014] The analog signal conditioning circuit 3 filters and converts the voltage signal output by the eddy current sensor 7 to analog-to-digital conversion. After filtering, a sinusoidal signal with minimal interference is obtained. After analog-to-digital conversion, digital voltage data is obtained and input to the data processing circuit 1. The data processing circuit 1 controls the high-frequency signal generation circuit 2 to generate a high-frequency square wave signal, which is input to the analog signal conditioning circuit 3. The data processing circuit 1 controls the reference voltage generation circuit 4 to generate a reference signal, which is input to the analog signal conditioning circuit 3. The reference signal is compared with the sinusoidal signal to generate a square wave signal, which is input to the data processing circuit 1. The data processing circuit 1 determines whether the motor installation has reached an optimal state based on the input digital voltage data. At the same time, the data processing circuit 1 combines the high-frequency square wave signal and the square wave signal input by the analog signal conditioning circuit 3 to determine the phase signal of the eddy current sensor 7, thereby assisting in the judgment of the motor's rotation zero-return error.

[0015] The data processing circuit 1 receives digital voltage data from the analog signal conditioning circuit 3 and determines whether the voltage signal input by the eddy current sensor 7 deviates from the ideal value. The high-frequency signal generator 2 generates a high-frequency square wave signal to achieve high-precision synchronization during the phase processing of the analog signal. The analog signal conditioning circuit 3 receives the voltage signal from the eddy current sensor 7 installed on the motor stator, performs filtering and analog-to-digital conversion, and converts the voltage signal into a square wave signal. The reference voltage generation circuit 4 generates a high-precision reference voltage signal and provides it to the analog signal conditioning circuit 3. After comparison, it outputs a square wave signal to the data processing circuit 1.

[0016] In this invention, the voltage signal output by the eddy current sensor 7 is filtered by the analog signal conditioning circuit 3 to become a sinusoidal signal with very little interference. This signal is compared with the reference signal generated by the reference voltage generation circuit 4 to generate a square wave signal, which is then input to the data processing circuit 1. The data processing circuit 1 determines whether the motor installation has reached an optimal state based on the input digital voltage data. At the same time, the data processing circuit 1 combines the high-frequency square wave signal from the high-frequency signal generation circuit 2 and the square wave signal input from the analog signal conditioning circuit 3 to determine the phase signal of the eddy current sensor 7, thereby assisting in the determination of the motor rotation zero-return error.

[0017] In a specific implementation of this invention, four reference blocks 6 are installed and fixed together with the disc base 5 on the shaft end of the motor rotor. The eddy current sensor 7 is installed on one side of the motor stator or on the turntable. The voltage signal output by the eddy current sensor 7 is connected to the analog signal conditioning circuit 3. After being processed by the analog signal conditioning circuit 3, it enters the data processing circuit 1. The data processing circuit 1 controls the high-frequency signal generation circuit 2 to generate a high-frequency square wave signal, which is input to the analog signal conditioning circuit 3. After the voltage signal output by the eddy current sensor 7 is filtered by the analog signal conditioning circuit 3, a sinusoidal signal with very little interference is obtained. This signal is compared with the reference signal generated by the reference voltage generation circuit 4 to generate a square wave signal. At the same time, after analog-to-digital conversion by the analog signal conditioning circuit 3, digital voltage data is output to the data processing circuit 1. Finally, the analog signal conditioning circuit 3 outputs the square wave signal and the digital voltage data to the data processing circuit 1.

[0018] The data processing circuit 1 is also provided with an output interface.

[0019] The data processing circuit 1 determines whether the motor installation has reached an optimal state based on the input digital voltage data. At the same time, the data processing circuit 1 combines the high-frequency signal and the square wave signal input by the analog signal conditioning circuit 3 to determine the phase signal of the eddy current sensor 7, and provides auxiliary judgment on the motor's rotation zero-return error.

[0020] The circuit for rotating table motor installation detection described in this invention receives the signal from an eddy current sensor installed on one side of the motor stator through an analog signal conditioning circuit. When the motor rotor is rotated, if the motor installation accuracy is poor, the voltage amplitude output by the eddy current sensor will change significantly. By detecting the distance between the reference block installed at different angles and the eddy current sensor, it is possible to detect whether the motor installation is off-center.

Claims

1. A circuit for turret motor installation detection, comprising a data processing circuit (1), a high-frequency signal generating circuit (2), an analog signal conditioning circuit (3), a reference voltage generating circuit (4); characterized in that, The input interface of the analog signal conditioning circuit (3) is connected with the signal output end of the eddy current sensor (7), the analog signal conditioning circuit (3) is connected with the data processing circuit (1), the high-frequency signal generating circuit (2) and the reference voltage generating circuit (4) respectively, the data processing circuit (1) is connected with the high-frequency signal generating circuit (2) and the reference voltage generating circuit (4) respectively; The analog signal conditioning circuit (3) carries out filtering processing and analog-digital conversion to the voltage signal output by the eddy current sensor (7), the filtering processing obtains a sine wave signal with very small interference, and the analog-digital conversion obtains digital voltage data input to the data processing circuit (1); the data processing circuit (1) controls the high-frequency signal generating circuit (2) to generate a high-frequency square wave signal input to the analog signal conditioning circuit (3); the data processing circuit (1) controls the reference voltage generating circuit (4) to generate a reference signal input to the analog signal conditioning circuit (3), the reference signal is compared with the sine wave signal to generate a square wave signal input to the data processing circuit (1); the data processing circuit (1) judges whether the motor installation reaches an optimal state according to the input digital voltage data, and simultaneously, the data processing circuit (1) combines the high-frequency square wave signal and the square wave signal input by the analog signal conditioning circuit (3) to judge the phase signal of the eddy current sensor (7), thereby assisting in judging the rotation zero return error of the motor.

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