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Filter based on PWM signal, processing circuit and chip

A PWM signal and processing circuit technology, applied in the direction of pulse processing, electrical components, generating electrical pulses, etc., can solve the problems affecting the motor rotation accuracy, unfavorable motor system control, etc., achieve strong practicability and scalability, and optimize level jitter Impulses, effects that increase effectiveness and reliability

Pending Publication Date: 2019-02-26
AMICRO SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the PWM circuits on the market do not process the input PWM signal, which is not conducive to the control of the motor system and affects the accuracy of the motor rotation

Method used

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  • Filter based on PWM signal, processing circuit and chip
  • Filter based on PWM signal, processing circuit and chip
  • Filter based on PWM signal, processing circuit and chip

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0021] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0022] An embodiment of the present invention provides a filter based on a PWM signal, which is applied to filter an externally input PWM signal, such as figure 2 As shown, the filter includes a preset number of D flip-flops and a comparison output module, the preset number is set to 6, and the filter includes a first D flip-flop D1, a second D flip-flop D2, a second D flip-flop Three D flip-flops D3, fourth D flip-flops D4, fifth D flip-flops D5, sixth D flip-flops D6 and a comparison output module, the aforementioned 6 D flip-flops constitute a 6-bit shift register, the aforementioned 6 The clock terminals of each D flip-flop are connected to the high-frequency clock signal CLK_US, the output Q[0] of the first D flip-flop D1, the output Q[1] of the second D flip-flop D2, and the third D flip-flop D3 The output Q[2] of the output terminal Q[3] ...

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Abstract

The invention discloses a filter based on a PWM signal, a processing circuit and a chip. The filter is utilized to filter the PWM signal which is input from outside. The filter comprises a preset number of D triggers and a comparison output module. The preset number of D triggers form a shift register with a preset number of bits. The clock ends of the preset number of D triggers are connected with the clock input end of the filter. The output ends (Q) of the preset number of D triggers are connected with the preset number of data input ends of the comparison output module. The filter, the processing circuit and the chip facilitate optimization of a level jitter pulse of the PWM signal in engineering practice.

Description

technical field [0001] The invention relates to the technical field of signal modulation, and relates to a filter, a processing circuit and a chip based on a PWM signal. Background technique [0002] PWM (Pulse Width Modulation) technology has been widely used in many fields such as industrial automation, robotics, precision CNC machine tools, and aerospace. The servo motor control system needs to generate PWM signals with variable duty ratios to drive power devices such as IGBTs and IPMs; motion control systems such as robots or CNC machine tools, between the motion control card and the servo driver, can be transmitted through PWM signals with variable frequency position control command. PWM and PFM are two control methods of DC / DC switches. This type of technology is often used in some analog circuits or peripheral motors for control. With the increasing integration of IC. Most of the PWM circuits on the market do not process the input PWM signal, which is not conducive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K3/017H03K5/05H03K5/1252H03K7/08
CPCH03K3/017H03K5/05H03K5/1252H03K7/08
Inventor 李璋辉何再生许登科
Owner AMICRO SEMICON CORP