Quadrature encoder capable of reading static position and use method thereof

Abstract

The invention discloses a quadrature encoder capable of reading a static position and a use method of the quadrature encoder. The quadrature encoder comprises a Z signal generation module, a P signal generation module and a rotating speed calculation module, the Z signal generation module is connected with the rotating speed calculation module; and the P signal generation module is connected with the rotating speed calculation module. According to the invention, the Z signal and the P signal are combined, the initial position of the motor in a static state can be accurately read without changing the original circuit frame, the complexity of the circuit and the control flow is reduced, the material is saved, and the cost is reduced; meanwhile, a Z signal and a P signal are mutually converted in different working modes, the use efficiency of the chip is greatly improved, the precision is improved, and the calculation time is optimized; and the stability of the Z-phase pulse width is further ensured by dynamically adjusting the Z signal in a dynamic state.

Description

Technical field [0001] The present invention relates to the field of encoder controls, and more particularly to an orthogonal encoder with a readable static position and a method of use. Background technique [0002] The encoder can convert the rotary displacement into a digital pulse signal, and control the angular displacement via a digital pulse, or it can be used to measure linear displacement. Therefore, the encoder has been widely used to machine tools, material processing, motor feedback systems, and measurement and control equipment. [0003] A conventional orthogonal encoder typically uses a method of reading a pulse signal to determine the initial position. When the motor is just powered up, the A line and the B line will initially issue a set of pulse signals, and the position of the motor rotor is default the initial position of the motor. However, the limitations of this method are that the motor must be in the working state, and then power it to the encoder to compl...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: In order to solve the problem that the traditional encoder can only detect the initial position of the motor when it is static through complicated circuits and control procedures, the present invention provides a quadrature encoder that can read the static position and its use method, by combining the Z signal with The P signal is merged, and the Z signal and the P signal are converted to each other in different states, which simplifies the complexity of the circuit design

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