CN103116298B - Automobile numerical control instrument driving system - Google Patents
Automobile numerical control instrument driving system Download PDFInfo
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- CN103116298B CN103116298B CN201310016674.6A CN201310016674A CN103116298B CN 103116298 B CN103116298 B CN 103116298B CN 201310016674 A CN201310016674 A CN 201310016674A CN 103116298 B CN103116298 B CN 103116298B
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Abstract
The invention discloses an automobile numerical control instrument driving system. The instrument controls a data acquiring mode module to acquire instrument control data. An instrument target distance calculating module calculates a distance value between an instrument pointer and a target position according to the instrument control data and a current position of the instrument pointer. A starting threshold control module and a soft stopping threshold calculating module confirm starting threshold parameters and soft stopping threshold parameters according to the distance value. An instrument starting control module calculates driving data of achievement of precise and smooth starting of the instrument pointer. An instrument proportion integration differentiation (PID) control module adopts a PID algorithm for calculating driving data of high-speed smooth movement of the instrument to the target position. An instrument soft stopping control module acquires instrument driving data in a table lookup mode. An instrument pulse width modulation (PWM) driving control module controls an instrument stepping motor in a PWM mode. The automobile numerical control instrument driving system calculates instrument corresponding control threshold values in real time according to the instrument target position and the instrument current position and confirms a control algorithm according to current speed of the instrument.
Description
Technical field
The invention belongs to technical field of automotive electronics, particularly relate to a kind of automobile numerical control instrument drive system.
Background technology
The automobile instrument control system that prior art provides, the mode that instrument control data obtains is single, reliability and the real-time of fetched data are lower, instrument relevant control threshold value can not be calculated in real time according to the mutual relationship of instrument target location and current location, and according to instrument present speed determination instrument control algolithm, not in time, during motion, harmony is poor for instrument response, and the accuracy of instrument instruction is lower.
Summary of the invention
The invention provides a kind of automobile numerical control instrument drive system, be intended to the automobile instrument control system that solution prior art provides, the mode that instrument control data obtains is single, reliability and the real-time of fetched data are lower, can not calculate instrument relevant control threshold value in real time according to the mutual relationship of instrument target location and current location, and according to instrument present speed determination instrument control algolithm, instrument response not in time, during motion, harmony is poor, the problem that the accuracy that instrument indicates is lower.
The object of the present invention is to provide a kind of automobile numerical control instrument drive system, this automobile numerical control instrument drive system comprises:
Instrument control data obtain manner module, for obtaining the data acquiring mode of setting, and obtains instrument control data by the data acquiring mode of setting;
Instrument target range computing module, be connected with described instrument control data obtain manner module, for the instrument control data that obtains according to described instrument control data obtain manner module and gauge pointer position at present, calculating instrument list index is to the distance value of target location;
Start thresholding computing module, be connected with described instrument target range computing module, start threshold parameter value for the gauge pointer calculated according to described instrument target range computing module to the distance value determination instrument of target location;
Soft stop thresholding computing module, is connected with described instrument target range computing module, for the gauge pointer that calculates according to the described instrument target range computing module distance value determination instrument soft stop threshold parameter value to target location;
Instrument starts control module, be connected with described starting thresholding computing module and soft stop thresholding computing module, for with instrument starting torque more greatly feature, in starting process, adopt relatively high power PWM to export the control algolithm of control and flexibility, calculate the driving data that gauge pointer realizes accurate smooth starting;
Instrument pid control module, is connected with described starting thresholding computing module and soft stop thresholding computing module, calculates the driving data of instrument high speed smooth motion to target location for adopting pid algorithm;
Instrument soft stop control module, is connected with described starting thresholding computing module and soft stop thresholding computing module, in conjunction with current instrument speed, obtains instrument drive data by the mode of tabling look-up;
Instrument PWM drive control module, start control module, instrument pid control module and instrument soft stop control module with described instrument to be connected, for starting the instrument drive data that control module, instrument pid control module and instrument soft stop control module obtain according to described instrument, realize the control to instrument step motor in the mode of PWM.
Further, when described instrument control data obtain manner module obtains data, complete by the local Information Monitoring of MCU, also directly obtain by CAN.
Further, when described instrument control data obtain manner module obtains data, data are selected according to setting by MCU, if setting obtain manner is invalid, MCU obtains data by alternative scheme automatically.
Further, the gauge pointer that calculates according to instrument target range computing module of described starting thresholding computing module and soft stop thresholding computing module in real time, dynamically calculates to the distance value of target location and starts threshold parameter value and soft stop threshold parameter value.
Further, according to instrument startup thresholding and instrument present speed, described instrument starting control module determines that MCU needs to export frequency and the dutycycle of PWM.
Further, described instrument pid control module starts thresholding, soft stop thresholding, target range and instrument present speed according to the instrument calculated, and determines that MCU needs to export frequency and the dutycycle of PWM by pid algorithm.
Further, described instrument soft stop control module, according to the instrument soft stop thresholding calculated, target range and instrument present speed, determines that by tabling look-up MCU needs to export frequency and the dutycycle of PWM.
Automobile numerical control instrument drive system provided by the invention, instrument control data obtain manner module obtains the data acquiring mode of setting, and obtain instrument control data by the data acquiring mode of setting, the instrument control data that instrument target range computing module obtains according to instrument control data obtain manner module and at present gauge pointer position, calculating instrument list index is to the distance value of target location, start thresholding computing module and start threshold parameter value according to gauge pointer to the distance value determination instrument of target location, soft stop thresholding computing module is according to the distance value determination instrument soft stop threshold parameter value of gauge pointer to target location, instrument starts control module with instrument starting torque more greatly feature, in starting process, adopt relatively high power PWM to export the control algolithm of control and flexibility, calculate the driving data that gauge pointer realizes accurate smooth starting, instrument pid control module adopts pid algorithm to calculate the driving data of instrument high speed smooth motion to target location, instrument soft stop control module is in conjunction with current instrument speed, instrument drive data are obtained by the mode of tabling look-up, instrument PWM drive control module starts control module according to instrument, the instrument drive data that instrument pid control module and instrument soft stop control module obtain, the control to instrument step motor is realized in the mode of PWM, this automobile numerical control instrument drive system obtains instrument control data by CAN, also gather by instrument MCU and obtain instrument control data, adopt the one main one standby control method obtaining instrument control data mode, ensure that reliability and the real-time of data, the method for two kinds of acquisition data can mutually automatically switch and a kind of method that can set wherein has right of priority, according to the mutual relationship of instrument target location and current location, real-time calculating instrument relevant control threshold value, and according to instrument present speed determination instrument control algolithm, instrument step motor adopts PWM control mode, when instrument start-up course medium velocity is lower than about definite value, high-power PWM is adopted to drive, start rear employing pid control algorithm to drive, instrument adopts close to during target location control mode of tabling look-up, to make instrument response more timely, during motion, harmony is better, improves the accuracy of instrument instruction, has stronger propagation and employment and is worth.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the automobile numerical control instrument drive system that the embodiment of the present invention provides;
Fig. 2 is the workflow diagram of the automobile numerical control instrument drive system that the embodiment of the present invention provides;
Fig. 3 is the workflow diagram of the instrument control data obtain manner module that the embodiment of the present invention provides;
Fig. 4 is the instrument target range computing module that the embodiment of the present invention provides, the workflow diagram starting thresholding computing module, soft stop thresholding computing module;
Fig. 5 is the workflow diagram of the instrument starting control module that the embodiment of the present invention provides;
Fig. 6 is the workflow diagram of the instrument pid control module that the embodiment of the present invention provides;
Fig. 7 is the workflow diagram of the instrument soft stop control module that the embodiment of the present invention provides;
Fig. 8 is the workflow diagram of the instrument PWM drive control module that the embodiment of the present invention provides.
In figure: 11, instrument control data obtain manner module; 12, instrument target range computing module; 13, thresholding computing module is started; 14, soft stop thresholding computing module; 15, instrument starts control module; 16, instrument pid control module; 17, instrument soft stop control module; 18, instrument PWM drive control module.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and be not used in restriction invention.
Fig. 1 shows the structure of the automobile numerical control instrument drive system that the embodiment of the present invention provides.For convenience of explanation, illustrate only part related to the present invention.
This automobile numerical control instrument drive system comprises:
Instrument control data obtain manner module 11, for obtaining the data acquiring mode of setting, and obtains instrument control data by the data acquiring mode of setting;
Instrument target range computing module 12, be connected with instrument control data obtain manner module 11, for the instrument control data that obtains according to instrument control data obtain manner module 11 and gauge pointer position at present, calculating instrument list index is to the distance value of target location;
Start thresholding computing module 13, be connected with instrument target range computing module 12, start threshold parameter value for the gauge pointer calculated according to instrument target range computing module 12 to the distance value determination instrument of target location;
Soft stop thresholding computing module 14, is connected with instrument target range computing module 12, for the gauge pointer that calculates according to the instrument target range computing module 12 distance value determination instrument soft stop threshold parameter value to target location;
Instrument starts control module 15, be connected with starting thresholding computing module 13 and soft stop thresholding computing module 14, for with instrument starting torque more greatly feature, in starting process, adopt relatively high power PWM to export the control algolithm of control and flexibility, calculate the driving data that gauge pointer realizes accurate smooth starting;
Instrument pid control module 16, is connected with starting thresholding computing module 13 and soft stop thresholding computing module 14, calculates the driving data of instrument high speed smooth motion to target location for adopting pid algorithm;
Instrument soft stop control module 17, is connected with starting thresholding computing module 13 and soft stop thresholding computing module 14, in conjunction with current instrument speed, obtains instrument drive data by the mode of tabling look-up;
Instrument PWM drive control module 18, start control module 15, instrument pid control module 16 and instrument soft stop control module 17 with instrument to be connected, for starting the instrument drive data that control module 15, instrument pid control module 16 and instrument soft stop control module 17 obtain according to instrument, realize the control to instrument step motor in the mode of PWM.
In embodiments of the present invention, when instrument control data obtain manner module 11 obtains data, complete by the local Information Monitoring of MCU, also directly obtain by CAN.
In embodiments of the present invention, when instrument control data obtain manner module 11 obtains data, data are selected according to setting by MCU, if setting obtain manner is invalid, MCU obtains data by alternative scheme automatically.
In embodiments of the present invention, start gauge pointer that thresholding computing module 13 and soft stop thresholding computing module 14 calculate according to instrument target range computing module 12 to target location distance value in real time, dynamically calculating starting threshold parameter value and soft stop threshold parameter value.
In embodiments of the present invention, according to instrument startup thresholding and instrument present speed, instrument starting control module 15 determines that MCU needs to export frequency and the dutycycle of PWM.
In embodiments of the present invention, instrument pid control module 16 starts thresholding, soft stop thresholding, target range and instrument present speed according to the instrument calculated, and determines that MCU needs to export frequency and the dutycycle of PWM by pid algorithm.
In embodiments of the present invention, instrument soft stop control module 17, according to the instrument soft stop thresholding calculated, target range and instrument present speed, determines that by tabling look-up MCU needs to export frequency and the dutycycle of PWM.
Below in conjunction with drawings and the specific embodiments, application principle of the present invention is further described.
The present invention relates to a kind of automobile numerical control instrument drive system based on CAN technology, instrument control data is obtained by CAN, also can be gathered by instrument MCU and obtain instrument control data, adopt the control method of one main one standby acquisition instrument control data mode to ensure reliability and the real-time of data, the method for two kinds of acquisition data can mutually automatically switch and a kind of method that can set wherein has right of priority; According to the mutual relationship of instrument target location and current location, calculate instrument relevant control threshold value in real time, and according to instrument present speed determination instrument control algolithm, instrument step motor adopts PWM control mode.When instrument start-up course medium velocity is lower than about definite value, high-power PWM is adopted to drive, start rear employing pid control algorithm to drive, instrument adopts close to during target location control mode of tabling look-up, to make instrument response more timely, during motion, harmony is better, to improve accuracy and the appreciative value of instrument instruction.
Fig. 2 shows the workflow of the automobile numerical control instrument drive system that the embodiment of the present invention provides;
Fig. 3 shows the workflow of the instrument control data obtain manner module that the embodiment of the present invention provides;
Fig. 4 shows the instrument target range computing module that the embodiment of the present invention provides, the workflow of starting thresholding computing module, soft stop thresholding computing module;
The instrument that Fig. 5 shows the embodiment of the present invention to be provided starts the workflow of control module;
Fig. 6 shows the workflow of the instrument pid control module that the embodiment of the present invention provides;
Fig. 7 shows the workflow of the instrument soft stop control module that the embodiment of the present invention provides;
Fig. 8 shows the workflow of the instrument PWM drive control module that the embodiment of the present invention provides.
Should based on the automobile numerical control instrument driving method of CAN technology, comprise instrument control data obtain manner module 11, instrument target range computing module 12, starting thresholding computing module 13, soft stop thresholding computing module 14, instrument starting control module 15, instrument pid control module 16, instrument soft stop control module 17 and instrument PWM drive control module 18;
Instrument control data obtain manner module 11 by obtaining the data acquiring mode setting and want, and obtains instrument control data by which;
Instrument target range computing module 12, starting thresholding computing module 13 and soft stop thresholding computing module 14 are according to obtained instrument control data and current gauge pointer position, according to this distance value, calculating instrument list index to the distance value of target location, and determines that instrument starts thresholding and instrument soft stop threshold parameter value in real time;
Instrument starts control module 15 with instrument starting torque more greatly feature, adopts relatively high power PWM to export and control in starting process, and the control algolithm of flexibility, calculates the driving data that gauge pointer realizes accurate smooth starting;
Instrument pid control module 16 adopts pid algorithm, realizes the smooth motion of instrument high speed and calculates to the driving data of target location;
Instrument soft stop control module 17, in conjunction with current instrument speed, obtains instrument drive data by the mode of tabling look-up;
The instrument drive data that instrument PWM drive control module 18 obtains according to instrument starting above control module 15, instrument pid control module 16 or instrument soft stop control module 17, realize the control to motor for instrument in the mode of PWM.
Instrument control data obtain manner module 11 1 aspect is completed by the local Information Monitoring of MCU, directly obtained from bus by CAN on the one hand, data acquiring mode is selected according to setting by MCU simultaneously, if setting obtain manner is invalid, MCU obtains data by alternative scheme automatically.
Starting thresholding computing module 13 and soft stop thresholding computing module 14 module calculate pointer dynamically according to the calculating of target range and start thresholding and soft stop thresholding.
Instrument is started control module 15 and is determined that MCU needs to export frequency and the dutycycle of PWM according to instrument startup thresholding and instrument present speed.
Instrument pid control module 16 starts thresholding, soft stop thresholding, target range and instrument present speed according to the instrument calculated, and by pid algorithm, determines that MCU needs to export frequency and the dutycycle of PWM.
Instrument soft stop control module 17, according to the instrument soft stop thresholding calculated, target range and instrument present speed, determines that by tabling look-up MCU needs to export frequency and the dutycycle of PWM.
Instrument starts frequency and the dutycycle of control module 15, instrument pid control module 16 and the determined PWM of instrument soft stop control module 17, is exported frequency and the operation of Duty ratio control instrument step motor of corresponding PWM by MCU.
The automobile numerical control instrument drive system that the embodiment of the present invention provides, instrument control data obtain manner module 11 obtains the data acquiring mode of setting, and obtain instrument control data by the data acquiring mode of setting, the instrument control data that instrument target range computing module 12 obtains according to instrument control data obtain manner module 11 and at present gauge pointer position, calculating instrument list index is to the distance value of target location, start thresholding computing module 13 and start threshold parameter value according to gauge pointer to the distance value determination instrument of target location, soft stop thresholding computing module 14 is according to the distance value determination instrument soft stop threshold parameter value of gauge pointer to target location, instrument starts control module 15 with instrument starting torque more greatly feature, in starting process, adopt relatively high power PWM to export the control algolithm of control and flexibility, calculate the driving data that gauge pointer realizes accurate smooth starting, instrument pid control module 16 adopts pid algorithm to calculate the driving data of instrument high speed smooth motion to target location, instrument soft stop control module 17 is in conjunction with current instrument speed, instrument drive data are obtained by the mode of tabling look-up, instrument PWM drive control module 18 starts control module 15 according to instrument, the instrument drive data that instrument pid control module 16 and instrument soft stop control module 17 obtain, the control to instrument step motor is realized in the mode of PWM, this automobile numerical control instrument drive system obtains instrument control data by CAN, also gather by instrument MCU and obtain instrument control data, adopt the one main one standby control method obtaining instrument control data mode, ensure that reliability and the real-time of data, the method for two kinds of acquisition data can mutually automatically switch and a kind of method that can set wherein has right of priority, according to the mutual relationship of instrument target location and current location, real-time calculating instrument relevant control threshold value, and according to instrument present speed determination instrument control algolithm, instrument step motor adopts PWM control mode, when instrument start-up course medium velocity is lower than about definite value, high-power PWM is adopted to drive, start rear employing pid control algorithm to drive, instrument adopts close to during target location control mode of tabling look-up, to make instrument response more timely, during motion, harmony is better, improves the accuracy of instrument instruction, has stronger propagation and employment and is worth.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. an automobile numerical control instrument drive system, is characterized in that, this automobile numerical control instrument drive system comprises:
Instrument control data obtain manner module, for obtaining the data acquiring mode of setting, and obtains instrument control data by the data acquiring mode of setting;
Instrument target range computing module, be connected with described instrument control data obtain manner module, for the instrument control data that obtains according to described instrument control data obtain manner module and gauge pointer position at present, calculating instrument list index is to the distance value of target location;
Start thresholding computing module, be connected with described instrument target range computing module, start threshold parameter value for the gauge pointer calculated according to described instrument target range computing module to the distance value determination instrument of target location;
Soft stop thresholding computing module, is connected with described instrument target range computing module, for the gauge pointer that calculates according to the described instrument target range computing module distance value determination instrument soft stop threshold parameter value to target location;
Instrument starts control module, be connected with described starting thresholding computing module and soft stop thresholding computing module, for with instrument starting torque more greatly feature, in starting process, adopt relatively high power PWM to export the control algolithm of control and flexibility, calculate the driving data that gauge pointer realizes accurate smooth starting;
Instrument pid control module, is connected with described starting thresholding computing module and soft stop thresholding computing module, calculates the driving data of instrument high speed smooth motion to target location for adopting pid algorithm;
Instrument soft stop control module, is connected with described starting thresholding computing module and soft stop thresholding computing module, in conjunction with current instrument speed, obtains instrument drive data by the mode of tabling look-up;
Instrument PWM drive control module, start control module, instrument pid control module and instrument soft stop control module with described instrument to be connected, for starting the instrument drive data that control module, instrument pid control module and instrument soft stop control module obtain according to described instrument, realize the control to instrument step motor in the mode of PWM.
2. automobile numerical control instrument drive system as claimed in claim 1, is characterized in that, when described instrument control data obtain manner module obtains data, completes, also directly obtain by CAN by the local Information Monitoring of MCU.
3. automobile numerical control instrument drive system as claimed in claim 1, it is characterized in that, when described instrument control data obtain manner module obtains data, data are selected according to setting by MCU, if setting obtain manner is invalid, MCU obtains data by alternative scheme automatically.
4. automobile numerical control instrument drive system as claimed in claim 1, it is characterized in that, the gauge pointer that described starting thresholding computing module and soft stop thresholding computing module calculate according to instrument target range computing module in real time, dynamically calculates to the distance value of target location and starts threshold parameter value and soft stop threshold parameter value.
5. automobile numerical control instrument drive system as claimed in claim 1, is characterized in that, described instrument is started control module and determined that MCU needs to export frequency and the dutycycle of PWM according to instrument starting thresholding and instrument present speed.
6. automobile numerical control instrument drive system as claimed in claim 1, it is characterized in that, described instrument pid control module starts thresholding, soft stop thresholding, target range and instrument present speed according to the instrument calculated, and determines that MCU needs to export frequency and the dutycycle of PWM by pid algorithm.
7. automobile numerical control instrument drive system as claimed in claim 1, it is characterized in that, described instrument soft stop control module, according to the instrument soft stop thresholding calculated, target range and instrument present speed, determines that by tabling look-up MCU needs to export frequency and the dutycycle of PWM.
8. automobile numerical control instrument drive system as claimed in claim 1, it is characterized in that, this automobile numerical control instrument drive system, according to the mutual relationship of instrument target location and current location, calculates instrument relevant control threshold value in real time, and according to instrument present speed determination instrument control algolithm.
9. automobile numerical control instrument drive system as claimed in claim 7, it is characterized in that, instrument step motor adopts PWM control mode, when instrument start-up course medium velocity is lower than about definite value, high-power PWM is adopted to drive, start rear employing pid control algorithm to drive, when instrument is close to target location, adopt control mode of tabling look-up.
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| CN201310016674.6A CN103116298B (en) | 2013-01-17 | 2013-01-17 | Automobile numerical control instrument driving system |
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| CN201310016674.6A CN103116298B (en) | 2013-01-17 | 2013-01-17 | Automobile numerical control instrument driving system |
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| CN103116298A CN103116298A (en) | 2013-05-22 |
| CN103116298B true CN103116298B (en) | 2015-05-27 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0529523B1 (en) * | 1991-08-28 | 1996-05-01 | Rohm Co., Ltd. | Multiple-meter driving apparatus |
| CN1188539A (en) * | 1996-04-11 | 1998-07-22 | 日本精机株式会社 | Device for driving stepper motor type measuring instrument |
| CN1760776A (en) * | 2005-11-03 | 2006-04-19 | 重庆邮电学院 | Drive unit for digital control pointer type meters in cars, and drive method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6853162B2 (en) * | 2002-12-05 | 2005-02-08 | Visteon Global Technologies, Inc. | Re-zeroing of a stepper motor without noise or movement |
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2013
- 2013-01-17 CN CN201310016674.6A patent/CN103116298B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0529523B1 (en) * | 1991-08-28 | 1996-05-01 | Rohm Co., Ltd. | Multiple-meter driving apparatus |
| CN1188539A (en) * | 1996-04-11 | 1998-07-22 | 日本精机株式会社 | Device for driving stepper motor type measuring instrument |
| CN1760776A (en) * | 2005-11-03 | 2006-04-19 | 重庆邮电学院 | Drive unit for digital control pointer type meters in cars, and drive method |
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