Real-time low speed detection device and method based on DSP quadrature encoding
An orthogonal coding and detection device technology is applied in the field of real-time low-speed detection devices based on DSP quadrature coding, which can solve the problems of inability to realize rapid extraction of rotation speed, single detection of rotation speed signals, and inability to judge signals, and achieves continuous and efficient calculation. Real-time, fast speed calculation, easy modular processing effect
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[0053] The present invention will be further explained below in conjunction with the drawings.
[0054] Such as figure 1 As shown, the real-time low-speed detection device based on DSP quadrature encoding provided by the present invention includes: pulse encoder 1, signal conditioning circuit 2, quadrature encoding module 3, and processor 4; among them: pulse encoder 1 is a speed sensor, It is composed of a photoelectric encoder or electromagnetic encoder installed on the shaft of the motor, which outputs three sets of differential pulse signals Ao, Bo, and Zo. Pulse Ao and pulse Bo are orthogonal pulses with a phase difference of 90 degrees, and pulse Zo is a zero-return pulse. That is, the encoder outputs a pulse Zo after one revolution;
[0055] The signal conditioning circuit 2 is a pulse shaping circuit module. Since the encoder signal cannot be used directly by the digital processor after it is generated, it is necessary to filter and reduce the three-channel signal. For lon...
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