A Fast Converting Circuit of Grating Ruler Pulse/Linear Velocity Analog Signal
A technology of linear speed and grating ruler, applied in the direction of digital-to-analog converters, etc., can solve the problems of complex software and hardware, and high requirements for microprocessors, and achieve the effects of strong real-time performance, low cost, and high precision
Active Publication Date: 2015-12-23
平湖三富力精密机械有限公司
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Problems solved by technology
The problems of this method are: there is a contradiction between real-time performance and detection accuracy, and the requirements for the microprocessor are high, and the software and hardware are relatively complicated.
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[0010] The present invention will be further described below in conjunction with accompanying drawing.
[0011] Such as figure 1 As shown, a grating ruler pulse / linear speed analog signal fast conversion circuit includes a quadrupling frequency pulse width modulation processing circuit and a direction-discriminating frequency / voltage signal processing circuit.
[0012] Quadruple frequency pulse width modulation processing circuit includes connector CN1, Schmitt trigger IC1, XOR gate chip IC2, D flip-flop IC3, A timer IC4, B timer IC5, A input filter resistor R1, B input filter Resistor R2, A DC blocking resistor R3, B DC blocking resistor R4, A timing resistor R5, B timing resistor R6, A input filter capacitor C1, B input filter capacitor C2, A DC blocking capacitor C3, B DC blocking capacitor C4, A Timing capacitor C5, B timing capacitor C6, positive power supply capacitor C9, negative power supply capacitor C10, A-phase diode D1, B-phase diode D2; the positive power supply ...
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The invention relates to a grating ruler pulse / linear speed analog signal fast transformation circuit. The grating ruler pulse / linear speed analog signal fast transformation circuit comprises a quadruplicated frequency pulse width modulation processing circuit and a sensing type frequency / voltage signal processing circuit, and specifically comprises a connection piece CN 1, an A input filter resistor R1, a B input filter resistor R2, a Schmitt trigger IC1, a exclusive-OR gate chip IC2, a D trigger IC3, an A timer IC4, a B timer IC5, an A stopping capacitor C3, a B stopping capacitor C4, an A-phase diode D1, a B-phase diode D2, an frequency / voltage (F / V) chip IC6, a phase inverter IC7, an analog switch IC8, a follower IC9, a negative terminal resistor R10 and an output filter resistor R13. The grating ruler pulse / linear speed analog signal fast transformation circuit is high in precision, strong in real-time performance and capable of recognizing motion direction automatically.
Description
technical field [0001] The invention belongs to the field of industrial measurement and control, and relates to a circuit, in particular to a grating ruler pulse / linear speed analog signal rapid conversion circuit, which is suitable for the occasion where the grating ruler is used to quickly detect the linear motion speed. Background technique [0002] In a linear motion control system using a linear motor as an actuator, a grating ruler is often used to detect the linear displacement and speed of the moving body. Among them, the common signal processing method for detecting the linear motion speed is: to process the pulse signal output by the grating ruler The mixed method of counting / counting period (M / T method for short) is the theoretical basis, and automatically corrects the sampling period of the speed measurement to correspond to several periods of the output pulse of the grating ruler, and then the software with the fast microprocessor chip as the core, The hardware ...
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IPC IPC(8): H03M1/66
Inventor 陈德传郑忠杰尚冬冬
Owner 平湖三富力精密机械有限公司