Method for feeding back initial absolute position of motor, apparatus and encoder frequency-dividing apparatus

An absolute position and coding technology, which is applied in the direction of electrical program control, sequence/logic controller program control, etc., can solve the problems of high implementation cost, limited selection range, complex scheme, etc., and achieve low implementation cost, cost saving, Effects with low controller requirements

Active Publication Date: 2016-06-15
深圳市雷赛软件技术有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this absolute position feedback method, two transmission processes are involved, the scheme is relatively complicated, and the implementation cost is high, and when the initial absolute position P0 is

Method used

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  • Method for feeding back initial absolute position of motor, apparatus and encoder frequency-dividing apparatus
  • Method for feeding back initial absolute position of motor, apparatus and encoder frequency-dividing apparatus
  • Method for feeding back initial absolute position of motor, apparatus and encoder frequency-dividing apparatus

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Example Embodiment

[0018] The present invention will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings.

[0019] like figure 2 As shown, it is a state schematic diagram of the method for feeding back the initial absolute position of the motor in this specific embodiment. Through processing, the initial absolute position P0 is converted into two pulse waves, which are fed back from the servo driver to the controller in the form of pulse waves, Instead of feedback through complex protocols with higher implementation costs as in the past. Preferably, as image 3 As shown, during transmission, the converted A pulse and B pulse are transmitted to the controller of the motor through the channel that transmits the two pulses corresponding to the incremental position ΔP. In this way, one transmission channel can be shared to transmit the initial absolute position P0 and the incremental position ΔP, which can further reduc...

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Abstract

The invention discloses a method for feeding back the initial absolute position of a motor, an apparatus and an encoder frequency-dividing apparatus. The method for feeding back the initial absolute position of the motor comprises the steps of 1) converting the value of the initial absolute position of a motor from the binary form to the decimal form, and generating pulse waves (PWM) of a corresponding number according to the decimal data; 2) counting the pulse number of the pulse waves, and generating each pulse of a pulse A and a pulse B according to the coding of the counting information; 3) transmitting the pulse A and the pulse B to the controller of the motor, and parsing the information of the pulse number of the pulse waves (PWM) to obtain the initial absolute position information of the motor. According to the technical scheme of the method for feeding back the initial absolute position of the motor, the initial absolute position information of the motor is converted into the information of the pulse A and the pulse B to be fed back and transmitted. Therefore, no special protocol-based transmission process adopted in the prior art is required. Therefore, the overall implementation cost is low and the technical scheme is wide in adaptability.

Description

【Technical field】 [0001] The invention relates to the field of motor control, in particular to a method and device for feedbacking the absolute position of a motor and an encoder frequency dividing device. 【Background technique】 [0002] The servo driver is connected with the control system, and the absolute position of the motor is fed back to the control system. Feedback involves the transmission of the initial absolute position P0 after power-on and the subsequent incremental absolute position △P. After the initial absolute position P0 and the subsequent incremental position △P are obtained in the control system, the absolute position of the motor can be calculated. [0003] The schematic diagram of the existing absolute position feedback method is as follows: figure 1 As shown, it includes two parts: (1) Transmission of incremental position information △P: After the incremental position information is processed by the encoder frequency division module such as CPLD / FPGA...

Claims

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Application Information

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IPC IPC(8): G05B19/04
CPCG05B19/04
Inventor 覃海涛吴立田天胜李卫平
Owner 深圳市雷赛软件技术有限公司
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