CN202997995U - Adjustable-speed electric automobile model controlling device based on PWM - Google Patents
Adjustable-speed electric automobile model controlling device based on PWM Download PDFInfo
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- CN202997995U CN202997995U CN2012206059791U CN201220605979U CN202997995U CN 202997995 U CN202997995 U CN 202997995U CN 2012206059791 U CN2012206059791 U CN 2012206059791U CN 201220605979 U CN201220605979 U CN 201220605979U CN 202997995 U CN202997995 U CN 202997995U
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Abstract
The utility model discloses an adjustable-speed electric automobile model controlling device based on PWM. The adjustable-speed electric automobile model controlling device based on PWM includes an MCU master controller, a power source module, a DC motor driving module, a DC motor and a speed measuring module. The power source module supplies power for the MCU master controller, the DC motor driving module, the DC motor and the speed measuring module respectively. The MCU master controller controls the DC motor driving module. The DC motor driving module controls the DC motor. The DC motor controls the speed measuring module. And the speed measuring module feeds speed feedback signals back to the MCU master controller. By using the adjustable-speed electric automobile model controlling device based on PWM, the stable adjustment of vehicle speed and the vehicle advancing, braking and backing can be realized and the vehicle speed is not restricted by external conditions such as road conditions and the like. Therefore, powerful aid is provided for the study of electric automobiles.
Description
Technical field
The utility model relates to a kind of adjustable speed electric automobile model-controlled system, specifically a kind of adjustable speed electric automobile model control device based on PWM.
Background technology
At society, along with the sharply increase of automobile quantity, automobile has become indispensable riding instead of walk or means of transportation in people's daily life, has changed people's life style, has improved people's quality of life.Yet the petroleum resources that general-utility car consumption is a large amount of discharge a large amount of waste gas, thereby have caused serious environmental pollution.Be accompanied by the various serious consequences that the increase of automobile quantity brings, increasing people begin sight is transferred in the research of electric automobile.
Summary of the invention
The purpose of this utility model is, a kind of control device of the adjustable speed electric automobile model based on PWM is provided, and can make the speed of a motor vehicle obtain stable adjusting and not be subjected to the restriction of the external conditions such as road conditions.
In order to realize above-mentioned task, the utility model is taked following technical solution:
A kind of adjustable speed electric automobile model control device based on PWM, it is characterized in that, comprise the MCU master controller, be connected with power module, direct current machine driver module and speed measuring module on the MCU master controller, wherein, the direct current machine driver module is connected with speed measuring module by direct current machine; Power module also is connected with direct current machine driver module, direct current machine and speed measuring module respectively.
Other characteristics of the present utility model are:
Described MCU master controller adopts the MC9S12XS128 single-chip microcomputer.
Described speed measuring module adopts photoelectric encoder.
Described power module comprises voltage stabilizing chip LM2940 and LT1070 boost chopper integrated chip.
Adjustable speed electric automobile model control device based on PWM of the present utility model, owing to having adopted the speed closed loop control mode, the rotating speed that utilizes photoelectric encoder to measure motor feeds back as speed, use the MC9S12XS128 single-chip microcomputer as the master controller of this device, control driving chip I R2104 by the pwm signal that its PWM module produces, by driving chip I R2104 driven MOS FET, come drive motors thereby consist of H bridge drive circuit again.Therefore, can realize the stable regulation of the speed of a motor vehicle and advancing, brake and moveing backward of vehicle.
Description of drawings
Fig. 1 is overall system block diagram of the present utility model.
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
Referring to Fig. 1, the present embodiment provides a kind of the general frame of the adjustable speed electric automobile model control device based on PWM, comprises the MCU master controller, power module, direct current machine driver module, direct current machine and speed measuring module; Power module is respectively to MCU master controller, direct current machine driver module, direct current machine and speed measuring module power supply; The MCU master controller is controlled the direct current machine driver module, and the direct current machine driver module is controlled direct current machine, and DC MOTOR CONTROL speed measuring module, speed measuring module feed back to feedback speed signal again the MCU master controller.
In the present embodiment, the single-chip microcomputer model that the MCU master controller adopts is MC9S12XS128, utilize the given speed signal of speed measuring module and the rate signal of feedback to control the driving chip I R2104 that its PWM module generation pwm signal is controlled MOSFE, again by its driven MOS FE, thereby consist of H bridge drive circuit drive motor, realize the smooth adjustment of electromotor velocity, also can realize advancing, brake and moveing backward of vehicle.
It is that N-channel MOS FE and special-purpose grid drive chip realize that the direct current machine driver module is selected motor drive mode.Device is recently regulated the output voltage of H bridge circuit by the duty of regulating PWM, to realize the control to the speed of a motor vehicle.But the PWM ripple is a kind of pulsewidth control wave, controls the motor both end voltage by the size of adjusting pulsewidth, realizes electric machine speed regulation.Device adopts the modulation system of fixed frequency modulated PWM, is 10KHz with the set of frequency of PWM square-wave signal, and holding frequency is constant, by regulating the duty ratio of PWM, realizes the adjusting to the motor both end voltage, thereby realizes speed-regulating function.
The mode of speed regulation that direct current machine adopts is that regulating power source voltage is realized, comes adjusting rotary speed by regulating the armature supply voltage, and along with the reduction of additional power source voltage, the rotating speed of motor descends.Therefore, decompression speed can only be regulated below rated speed (being called again base speed).This mode of speed regulation makes the hardness of mechanical property remain unchanged, and speed adjustable range is large; The flatness of speed governing is good, can realize stepless time adjustment; The armature circuit equivalent resistance is very little, and loss is little.
Speed measuring module adopts photoelectric encoder, the present embodiment to select the photoelectric encoder OME-100-1N of Japanese interior close control company, and its inside only is comprised of a transmitting tube and a receiving tube, therefore at first needs to add power supply and current-limiting resistance.Due to the photoelectric encoder small volume, so be directly installed on the nearer gear wheel of motor.To note installation gist during installation: must be completely fixed, not allow to relatively move between photoelectric encoder and car mould; The gear of photoelectric encoder and the travelling gear of motor must be at grade.After installing according to above main points, the output square-wave signal is reliable and stable, and directly by single-chip microcomputer ECT resume module, survey time speed is more stable, can meet the demands.
Power module includes voltage stabilizing chip LM2940 and LT1070 boost chopper integrated chip, because MCU master controller, speed measuring module all need the 5V power supply, in motor-drive circuit, the IR2104 chip needs the supply power voltage of 12V, direct current machine can make 7.2V, and 2000mA h nickel pick battery is directly powered.Adopt eventually voltage stabilizing chip LM2940 as the 5V power supply, adopt LT1070 boost chopper integrated chip as the 12V supply power voltage.
In sum, the adjustable speed electric automobile model control device based on PWM of the present utility model can realize the stable regulation of the speed of a motor vehicle and advancing, brake and moveing backward of vehicle, and the speed of a motor vehicle is not subjected to the restriction of the external conditions such as road conditions.
Claims (4)
1. adjustable speed electric automobile model control device based on PWM, it is characterized in that, comprise the MCU master controller, be connected with power module, direct current machine driver module and speed measuring module on the MCU master controller, wherein, the direct current machine driver module is connected with speed measuring module by direct current machine; Power module also is connected with direct current machine driver module, direct current machine and speed measuring module respectively.
2. the adjustable speed electric automobile model control device based on PWM as claimed in claim 1, is characterized in that, described MCU master controller is selected the MC9S12XS128 single-chip microcomputer.
3. the adjustable speed electric automobile model control device based on PWM as claimed in claim 1, is characterized in that, described speed measuring module adopts photoelectric encoder.
4. the adjustable speed electric automobile model control device based on PWM as claimed in claim 1, is characterized in that, described power module includes voltage stabilizing chip LM2940 and LT1070 boost chopper integrated chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206059791U CN202997995U (en) | 2012-11-15 | 2012-11-15 | Adjustable-speed electric automobile model controlling device based on PWM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206059791U CN202997995U (en) | 2012-11-15 | 2012-11-15 | Adjustable-speed electric automobile model controlling device based on PWM |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202997995U true CN202997995U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206059791U Expired - Fee Related CN202997995U (en) | 2012-11-15 | 2012-11-15 | Adjustable-speed electric automobile model controlling device based on PWM |
Country Status (1)
| Country | Link |
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| CN (1) | CN202997995U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103660994A (en) * | 2013-07-26 | 2014-03-26 | 广东星辉车模股份有限公司 | Baby carrier speed change drive circuit |
| CN111628694A (en) * | 2020-06-04 | 2020-09-04 | 深圳市亿道数码技术有限公司 | Control circuit and control method of steering engine |
| CN112721651A (en) * | 2020-12-29 | 2021-04-30 | 江苏师范大学 | Solar electric automobile intelligent control system based on PWM control |
-
2012
- 2012-11-15 CN CN2012206059791U patent/CN202997995U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103660994A (en) * | 2013-07-26 | 2014-03-26 | 广东星辉车模股份有限公司 | Baby carrier speed change drive circuit |
| CN111628694A (en) * | 2020-06-04 | 2020-09-04 | 深圳市亿道数码技术有限公司 | Control circuit and control method of steering engine |
| CN112721651A (en) * | 2020-12-29 | 2021-04-30 | 江苏师范大学 | Solar electric automobile intelligent control system based on PWM control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20131115 |