CN201794668U - Singlechip-based automobile throttle valve controller - Google Patents
Singlechip-based automobile throttle valve controller Download PDFInfo
- Publication number
- CN201794668U CN201794668U CN2010205483640U CN201020548364U CN201794668U CN 201794668 U CN201794668 U CN 201794668U CN 2010205483640 U CN2010205483640 U CN 2010205483640U CN 201020548364 U CN201020548364 U CN 201020548364U CN 201794668 U CN201794668 U CN 201794668U
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- throttle valve
- drive motor
- control unit
- accelerator pedal
- singlechip
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- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The utility model discloses a singlechip-based automobile throttle valve controller. The singlechip-based automobile throttle valve controller comprises an accelerator pedal, a throttle valve body and a driving motor which are positioned on an automobile, a direct current displacement sensor is arranged on the accelerator pedal; the driving motor, a throttle valve block and a position sensor are arranged in the throttle valve body; the direct current displacement sensor and the position sensor are communicated with a control unit respectively; and the driving motor is connected with the throttle valve block and the control unit respectively. According to accelerator pedal stroke information acquired by the direct current displacement sensor, the singlechip-based automobile throttle valve controller determines that a driver performs acceleration, urgent acceleration, deceleration or urgent deceleration so as to control the opening/closing of the throttle valve and the opening/closing speed. The singlechip-based automobile throttle valve controller has the advantages of simple circuit, accuracy in control, quickness in response, low cost, high stability and the like.
Description
Technical field
The utility model relates to automotive electronics and appliance applications field, relates to Intelligent Measurement control field, relates in particular to a kind of SCM Based air throttle of car controller.
Background technique
Along with the continuous development of automobile industry, the problem of consequent energy scarcity, disposal of pollutants is serious day by day.And the quality of closure performance has crucial influence to the power character and the Economy of automobile in the motor.Though traditional mechanical Zipper-type closure control has simple in structure, advantages such as reaction is fast, reliable operation, low cost.But because automobile work road conditions are complicated and changeable, driver's driving technology is uneven, therefore the best aperture that machinery Zipper-type throttle system can not be determined closure according to driver's driving intention and car load running condition is difficult to utilize the power character and the fuel economy of automobile the best.This big defective of traditional mechanical Zipper-type closure is restricting automobile and is developing towards environmental protection, economic direction, has hindered the paces that China builds a conservation-minded society simultaneously.
Summary of the invention
The purpose of this utility model is to provide a kind of SCM Based air throttle of car controller, this device can be according to different active forces and the speed of action of driver to accelerator pedal, throttle opening and opening and closing speed to automobile are controlled accurately, make automobile closure under different operating modes can both reach best aperture, thereby guarantee that automobile has best power character and fuel economy constantly in the running process of reality.
In order to realize above-mentioned task, the utility model adopts following technical solution to be achieved:
A kind of SCM Based air throttle of car controller, comprise accelerator pedal, throttle body and drive motor on the automobile, it is characterized in that, the direct current displacement transducer is installed on accelerator pedal, drive motor, closure valve block and position transducer are installed on throttle body, the direct current displacement transducer is connected with control unit respectively with position transducer, and drive motor is connected with control unit with the closure valve block respectively.
Accelerator pedal and direct current displacement transducer constitute collecting unit, the direct current displacement transducer is a variation according to displacement amount, the adjustable resistance of resistance generation respective change, the magnitude of voltage of its output changes along with the variation of internal resistance value, and the magnitude of voltage excursion is 0 ~ 5V.Therefore the displacement variable of the collection accelerator pedal that it can be real-time, i.e. the stroke of accelerator pedal, and corresponding displacement variable is converted into the correspondent voltage value passes to control unit.
Described control unit is the control core of whole air throttle of car, the MC9S12XS128 single-chip microcomputer that control unit adopts freescale company to produce, its can be real-time the magnitude of voltage of the representative accelerator pedal displacement amount that sent of reception collecting unit, after these information of voltage are handled judgement fast and accurately, the control signal after performance element output is handled then.
Described drive motor, closure valve block, position transducer all are installed in the throttle body, constitute performance element, and drive motor is connected with the closure valve block respectively with position transducer.
Described drive motor is a DC servo motor, the motor driving control signal that the reception control unit that it can be real-time is transmitted, thus the closure valve block that drives in the throttle body rotates, and adjusts the aperture and the opening and closing speed of closure.
Described drive motor adopts the H bridge circuit that motor is carried out clockwise and anticlockwise control, thereby realizes the open and close of the closure valve block in the throttle body, promptly realizes the increase of throttle opening and reduces.
Described position transducer is two adjustable resistances, the current aperture that detects closure that it can be real-time, and convert current aperture to the correspondent voltage value, send control unit to.
The resistance of described two adjustable resistances is inverse change, and promptly a resistance value increases, and then another resistance value minimizing, so the voltage of its output also becomes complementary relationship, can increase the reliability of this controller like this.
SCM Based air throttle of car controller of the present utility model, the accelerator travel information of being gathered according to the direct current displacement transducer, judge that the driver quickens, suddenly quickens, slows down or anxious deceleration-operation, thus the aperture and the opening and closing speed of control closure.The utlity model has that circuit is simple, advantages such as precise control, response are rapid, with low cost, good stability.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a H bridge motor-drive circuit.
Fig. 3 is a workflow diagram of the present utility model.
Below in conjunction with drawings and Examples the utility model is further specified.
Embodiment
As shown in Figure 1, SCM Based air throttle of car controller of the present utility model, comprise accelerator pedal, throttle body and drive motor on the automobile, the direct current displacement transducer is installed on accelerator pedal, drive motor, closure valve block and position transducer are installed in throttle body, the direct current displacement transducer is connected with control unit respectively with position transducer, and drive motor is connected with control unit with the closure valve block respectively.
In the present embodiment, control unit adopts the MC9S12XS128 single-chip microcomputer of Freescale;
The direct current displacement transducer is a variation according to displacement amount, the adjustable resistance of resistance generation respective change.
Position transducer is two adjustable resistances, and the resistance of two adjustable resistances is inverse change, and promptly a resistance value increases, and then another resistance value reduces.
Drive motor, closure valve block and position transducer all are installed in the throttle body, constitute performance element, and drive motor is connected with the closure valve block respectively with position transducer.
Its working procedure is that when driver's bend the throttle, the voltage of direct current displacement transducer output is reduced to 0V gradually from 5V; On the contrary, when driver's release the gas pedal, the voltage of direct current displacement transducer output is increased to 5V gradually from 0V, thereby the stroke to accelerator pedal that can be real-time is gathered.Simultaneously, the slope of voltage change has embodied that the driver steps on or the speed of release the gas pedal.The output of direct current displacement transducer links to each other with the A/D port of control unit then, it is sent to the accelerator pedal displacement amount that collects the A/D port of control unit with the form of analog voltage signal, control unit carries out the A/D conversion to this analog voltage signal, after corresponding judgment is handled, the output pwm control signal.Control unit is connected with drive motor, and the pwm control signal of its output is controlled the sense of rotation and the rotational velocity of drive motor.When drive motor rotates, drive the closure valve block and rotate, it is opened or closure, thereby realize the variation of throttle opening.
Position transducer is connected with control unit with the closure valve block, its can be real-time the current aperture of collection closure, and send the current aperture of closure to control unit with the form of aanalogvoltage, thereby control unit can calculate the target aperture and the opening and closing speed of closure and produce control signal through after the calculation process in conjunction with closure current aperture and accelerator travel information.
In order to realize the clockwise and anticlockwise of drive motor, thereby realize the increase of throttle opening and reduce, adopt the H bridge circuit to control the rotation of motor.The circuit of specific implementation as shown in Figure 2, among the figure, T1, T2 are 8050 triodes, T3, T4 are 9013 triodes, T5, T6 are 8550 triodes, the base stage 1 of T1, receiving pole 2 and emitter 3 respectively with the emitter 3 of T3, the emitter 3 of T5, ground is connected; The base stage 1 of T2, receiving pole 2 and emitter 3 respectively with the emitter 3 of T4, the emitter 3 of T6, ground is connected; The base stage 1 of T3, receiving pole 2 and emitter 3 respectively with the PP1 mouth of single-chip microcomputer, the base stage 1 of T6, the base stage 1 of T1 is connected; The base stage 1 of T4, receiving pole 2 and emitter 3 respectively with the PP3 mouth of single-chip microcomputer, the base stage 1 of T5, the base stage 1 of T2 is connected; The base stage 1 of T5, receiving pole 2 and emitter 3 respectively with the receiving pole 2 of T4 ,+5V, the receiving pole 2 of T1 is connected; The base stage 1 of T6, receiving pole 2 and emitter 3 respectively with the receiving pole 2 of T3 ,+5V, the receiving pole 2 of T2 is connected; The positive pole of drive motor is connected with the emitter of the receiving pole of T1 and T5, and negative pole is connected with the receiving pole of T2 and the emitter of T6.When single-chip microcomputer signal end PP3 mouth output high level signal, triode T4, T5, T2 conducting make the current direction of process in the drive motor for from left to right, thus the just commentaries on classics of realization motor.On the contrary, when single-chip microcomputer signal port PP1 output high level signal, triode T3, T1, T6 conducting make the current direction of process in the drive motor for from right to left, thus the counter-rotating of realization motor.
As shown in Figure 3, when the driver steps on or during release the gas pedal, the direct current displacement transducer is according to the stroke of accelerator pedal, pass to the MC9S12XS128 single-chip microcomputer after converting corresponding displacement signal amount to analog voltage signal, the MC9S12XS128 single-chip microcomputer obtains digital voltage signal after the analog voltage signal of being imported is carried out the A/D conversion.According to the respective function of voltage that sets and throttle opening, the MC9S12XS128 single-chip microcomputer obtains target throttle valve through after the calculation process.The MC9S12XS128 single-chip microcomputer also carries out the second differential computing to the digital voltage signal after the A/D conversion simultaneously, obtains the acceleration diagram of accelerator pedal.According to the respective function of the acceleration diagram and the closure opening and closing speed of the accelerator pedal that sets, single-chip microcomputer is through obtaining the opening and closing speed of closure after the calculation process.Simultaneously, the current aperture of throttle position sensor real-time measurement closure in the process that the closure valve block opens and closes, throttle position sensor passes to the MC9S12XS128 single-chip microcomputer after can converting the corresponding resistance value of throttle opening to analog voltage signal, single-chip microcomputer is changed the voltage signal that receives through A/D after, calculate the current aperture of closure according to resulting digital voltage signal.Single-chip microcomputer is according to logical analysis and handle the resulting closure target aperture in back, and current aperture of closure and closure opening and closing speed are judged throttle opening and need be increased or reduce and the closure opening and closing speed need increase or reduce.Export the PWM control command simultaneously, the rotational velocity of controlling and driving motor and sense of rotation.After drive motor receives the PWM control command of single-chip microcomputer, rotate respective angles according to instruction and make the closure rotation make it reach desired aperture.Single-chip microcomputer is realized closed loop control to the best of closure by as above circuit feedback control.
Claims (4)
1. SCM Based air throttle of car controller, comprise accelerator pedal, throttle body and drive motor on the automobile, it is characterized in that, the direct current displacement transducer is installed on accelerator pedal, drive motor, closure valve block and position transducer are installed in throttle body, the direct current displacement transducer is connected with control unit respectively with position transducer, and drive motor is connected with control unit with the closure valve block respectively.
2. SCM Based air throttle of car controller as claimed in claim 1 is characterized in that, described control unit adopts the MC9S12XS128 single-chip microcomputer of Freescale.
3. SCM Based air throttle of car controller as claimed in claim 1, it is characterized in that, described drive motor, closure valve block and position transducer all are installed in the throttle body, constitute performance element, drive motor is connected with the closure valve block respectively with position transducer.
4. SCM Based air throttle of car controller as claimed in claim 1 is characterized in that described position transducer is two adjustable resistances, and the resistance of two adjustable resistances is inverse change, and promptly a resistance value increases, and then another resistance value reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205483640U CN201794668U (en) | 2010-09-30 | 2010-09-30 | Singlechip-based automobile throttle valve controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205483640U CN201794668U (en) | 2010-09-30 | 2010-09-30 | Singlechip-based automobile throttle valve controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201794668U true CN201794668U (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205483640U Expired - Fee Related CN201794668U (en) | 2010-09-30 | 2010-09-30 | Singlechip-based automobile throttle valve controller |
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| Country | Link |
|---|---|
| CN (1) | CN201794668U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748969A (en) * | 2015-04-24 | 2015-07-01 | 无锡隆盛科技股份有限公司 | Detection device for response time of open loop throttle |
| CN104819832A (en) * | 2015-04-24 | 2015-08-05 | 无锡隆盛科技股份有限公司 | Open-loop throttle valve response time detection method |
| CN106321255A (en) * | 2016-09-30 | 2017-01-11 | 张家港长安大学汽车工程研究院 | Stepping motor-based automatic control system for open degree of throttle gate of automobile |
| CN114087077A (en) * | 2021-10-15 | 2022-02-25 | 湖南道依茨动力有限公司 | Throttle opening control method and device and working machine |
-
2010
- 2010-09-30 CN CN2010205483640U patent/CN201794668U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748969A (en) * | 2015-04-24 | 2015-07-01 | 无锡隆盛科技股份有限公司 | Detection device for response time of open loop throttle |
| CN104819832A (en) * | 2015-04-24 | 2015-08-05 | 无锡隆盛科技股份有限公司 | Open-loop throttle valve response time detection method |
| CN104819832B (en) * | 2015-04-24 | 2017-07-28 | 无锡隆盛科技股份有限公司 | The detection method of open loop air throttle response time |
| CN106321255A (en) * | 2016-09-30 | 2017-01-11 | 张家港长安大学汽车工程研究院 | Stepping motor-based automatic control system for open degree of throttle gate of automobile |
| CN114087077A (en) * | 2021-10-15 | 2022-02-25 | 湖南道依茨动力有限公司 | Throttle opening control method and device and working machine |
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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: 20110413 Termination date: 20110930 |