CN203115247U - ABS electromagnetic valve control circuit based on high-frequency PWM - Google Patents
ABS electromagnetic valve control circuit based on high-frequency PWM Download PDFInfo
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- CN203115247U CN203115247U CN 201320084466 CN201320084466U CN203115247U CN 203115247 U CN203115247 U CN 203115247U CN 201320084466 CN201320084466 CN 201320084466 CN 201320084466 U CN201320084466 U CN 201320084466U CN 203115247 U CN203115247 U CN 203115247U
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- abs
- electromagnetic valve
- frequency pwm
- control circuit
- solenoid valve
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model provides an ABS electromagnetic valve control circuit based on high-frequency PWM, and relates to an automobile ABS electronic control unit circuit. The ABS electromagnetic valve control circuit comprises a master control module, a motor, an electromagnetic valve driving module, a power supply management module, a peripheral input/output module, a communication module and the like. The key point of the ABS electromagnetic valve control circuit is the electromagnetic valve driving module. The ABS electromagnetic valve control circuit based on the high-frequency PWM is characterized in that a high frequency (2KHz-4KHz) pulse width modulation mode is used for driving an ABS electromagnetic valve coil, namely a high frequency PWM mode is used for driving the electromagnetic valve coil of a high-speed switch, controlling is made to be more stable, linear control similar to that of a proportional valve and a servo valve is achieved maximally, and the cost of a high-speed switch valve is only about one tenth of the cost of the proportional valve, and low-cost high-efficiency control is achieved.
Description
Technical field
The utility model relates to the circuit of ABS electronic control unit, especially based on the ABS solenoid valve control circuit of high-frequency PWM.
Background technique
The ABS system finishes meticulous adjusting to wheel-braking cylinder pressure by solenoid valve and dump pump, to prevent that excessively braking makes wheel lock up.Because the ABS working environment is very abominable, be high efficiency and the reliability that guarantees the solenoid valve response, except with the parameter correlation of solenoid valve itself, the driving mode of solenoid valve has also directly determined high efficiency and the reliability that solenoid valve responds.With on-off mode and low frequency PWM control solenoid valve, though control strategy is fairly simple, but control is unstable, the retardation pressure non-linear growth, the pressure surge that brings of constantly moving when spool opens and closes fully also can cause certain noise, pressure surge brings bad pedal sense in the time of also can braking to the driver, and can not realize the linearity control to switch electromagnetic valve.Therefore the utility model adopts the high-frequency PWM mode to control high-speed switch electromagnetic valve, and dynamic response is good, has reduced pressure again simultaneously and has pushed the speed, and makes control more stable, more approaching linearity.
The model utility content
Technical problem to be solved in the utility model provides a kind of ABS solenoid valve control circuit based on high-frequency PWM, it is characterized in that, adopt high-frequency PWM mode control switch solenoid valve, make the high efficiency of this solenoid-driven mode and reliability stronger, further improved the control accuracy of system.This driving mode has guaranteed that not only the valve element position control of high-speed switch valve in a certain aperture, has realized that also the linearity of pressure increases, and has reduced pressure build-up speed simultaneously again, makes that control is more stable, has realized being similar to the linear switch function of Proportional valve.
The utility model is based on the ABS solenoid valve control circuit of high-frequency PWM, mainly comprise master chip XC2364B, solenoid-driven chip TLE6228, the special-purpose integrated IC TLE6212 of ABS, peripheral input/output module, communication module, it is characterized in that, select high-speed switch electromagnetic valve for use and drive chip TLE6228, every TLE6228 drives 4 way solenoid valve coil workings, and the Vs port external VCC provide voltage to chip; Input port IN1-IN4 receives the high-frequency PWM control signal of master chip, and the control output end is to drive 4 way solenoid valve coil workings; The maximum drive ability of OUT1, OUT2 port is 5 A, connects reduction valve coil SOL1 and the SOL2 of ABS; OUT3 and OUT4 port maximum drive ability are 3 A, connect pressure charging valve coil SOL3 and the SOL4 of ABS, can not connect anti-; TLE6228 also can monitor the output state of each passage, by ST1-ST4 port output, is used for real-time communication with the master chip feedback; The STBY port is the standby mode of low power consumption, is connected with master chip, can pass through MCU quick closedown chip.
Description of drawings
Below in conjunction with the drawings and specific embodiments the technical solution of the utility model is further described in detail.
Fig. 1 is the driving circuit for electromagnetic valve schematic diagram.
Fig. 2 is 8 way solenoid valve coil circuit figure.
Fig. 3 is the public high-end drive circuit figure of electromagnetic valve coil.
Fig. 4 is XC2364B and TLE6212 communication interface figure.
Fig. 5 is the part connection diagram of master chip XC2364B.
Embodiment
Record through experiment, 4 vacuum solenoid valve maximum starting currents of general abs pressure regulator are about 3.6 A, and 4 boost electromagnetic valve maximum starting currents are about 2.4 A, and operating voltage 4.8～32 V of TLE6228, two paths internal resistance 0.2 Ω, maximum load current 3 A; Two-way internal resistance 0.3 Ω in addition, therefore maximum load current 5 A select for use TLE6228 can satisfy the driving current requirement of ABS supercharging and vacuum solenoid valve just, and have lower conducting internal resistance can guarantee low power consumption again.
As shown in Figure 1, the TLE6228 chip is intelligent lower edge switch, is typically to hang down the limit to drive.Every TLE6228 can drive 4 electromagnetic valve coils.The coil of 8 road high-speed switch electromagnetic valves is by two TLE6228 chip drives.Be example with SU1, the Vs port external VCC provide voltage to chip; Input port IN1-IN4 links to each other with master chip XC2364B among Fig. 5, receives the 2KHz-4KHz high-frequency PWM control signal of master chip, and the control output end is to drive 4 way solenoid valve coil workings; The maximum drive ability of OUT1, OUT2 port is 5 A, connects reduction valve coil SOL1 and the SOL2 of ABS; OUT3 and OUT4 port maximum drive ability are 3 A, connect pressure charging valve coil SOL3 and the SOL4 of ABS, can not connect anti-; TLE6228 also can monitor the output state of each passage, by ST1-ST4 port output, with the master chip feedback, the state signal of each solenoid valve is returned to master chip, is used for real-time communication; The STBY port is the standby mode of low power consumption, is connected with master chip, can pass through MCU quick closedown chip.Chip SU2 in like manner controls reduction valve coil SOL5 and the SOL6 of ABS, and pressure charging valve coil SOL7 and SOL8.
As shown in Figure 2, the two ends of pressure charging valve 1N5817 type in parallel fly-wheel diode, solenoid valve is inductive load, its external reverse fly-wheel diode can provide lasting electric current to load, will be by the discharge of fly-wheel diode loop after the outage, to avoid sudden change, played the effect of smoothing current, so the variation of the aperture of valve is comparatively mild, it is also more steadily efficient to drive control; The induction electromotive force that produces of coil consumes by the loop acting that diode and coil constitute in addition, clump and protected the safety of other components and parts in the circuit.
As shown in Figure 3, the 12V electricity is high-end by the coil that two N-channel MOS pipes (IPB80N04S3-H4) drive solenoid valve, for 8 way solenoid valves provide public high terminal voltage SOLCOM12V.
As shown in Figure 4, integrated IC TLE6212 is the special chip of ABS, passes through the SPI serial communication with master chip XC2364B, implements to carry out the instruction of master chip, by the shutoff of SOL_RL port controlling N-channel MOS pipe, thus the high side circuitry of driving electromagnetic valve coil.
PWM control is modulated the width of input pulse exactly, obtains required signal equivalently by the width of a series of pulses is modulated.Its input signal is electric current, and when the value of control signal during greater than carrier signal, solenoid valve is opened, otherwise makes closed electromagnetic valve.In a cycle period, the time that solenoid valve is opened is called pulse duration modulation rate (also claiming dutycycle) with the ratio of cumulative time.
Typical PWM control be under low frequency to the duty cycle adjustment of solenoid valve, this modulation frequency concentrates in 10-100Hz scope.In this scope, by seeking optimum PWM control frequency scope, adjust the dutycycle of PWM control, the time scale that the control high-speed switch valve opens or closes, and make the average aperture of spool remain on a level, thus the control retardation pressure.But this process is not the linearity control on the practical significance because under this control mode, though realized that the average aperture of high-speed switch valve is certain, in fact high-speed switch valve still between the standard width of a room in an old-style house close.The dynamic response time of high-speed switch valve is generally about 2ms, PWM in 10-100Hz scope control, one modulation period the T inner spool can move to limit position and also can return to initial position fully.
The utility model, solenoid valve input voltage are 12V, increase during 23 degrees centigrade of normal temperature, the reduction valve coil resistance all is about 7 ohm, in the high frequency control of 2KHz-4KHz down, by changing the dutycycle of PWM control, just can realize the near-linear adjusting of spool aperture.Obtain when dutycycle is between 36%-50% through test, can guarantee that the spool of high-speed switch valve suspends in a certain position, so dutycycle need be controlled in this scope.This is under high-frequency PWM control, and the valve core movement characteristic of high-speed switch valve approaches linear, has been Proportional valve to a certain extent.Though it is more that the low frequency PWM control ladder pressurization stages in ABS/ ESP braking control is used, and also will be replaced by the directly actuated supercharging strategy of high-frequency PWM dutycycle, make the more steady degree of having of increase process of retardation pressure.
Along with the automobile active safety continuous advancement in technology, the application of electrohydraulic control technology on automobile active safety system is more and more, high-speed switch electromagnetic valve is as a kind of electrohydraulic control element of excellent performance, not only the response time is fast, cost also only is about 1/10th of Proportional valve, the high-frequency PWM of research high-speed switch electromagnetic valve is controlled, and can further widen the function application area of high-speed switch valve, for critical effect has been played in the precision control of system.
It should be noted last that, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (4)
1. based on the ABS solenoid valve control circuit of high-frequency PWM, mainly comprise master chip XC2364B, solenoid-driven chip TLE6228, the special-purpose integrated IC TLE6212 of ABS, peripheral input/output module, communication module, it is characterized in that, select high-speed switch electromagnetic valve for use and drive chip TLE6228, every TLE6228 drives 4 way solenoid valve coil workings, and the Vs port external VCC provide voltage to chip; Input port IN1-IN4 receives the high-frequency PWM control signal of master chip, and the control output end is to drive 4 way solenoid valve coil workings; The maximum drive ability of OUT1, OUT2 port is 5 A, connects reduction valve coil SOL1 and the SOL2 of ABS; OUT3 and OUT4 port maximum drive ability are 3 A, connect pressure charging valve coil SOL3 and the SOL4 of ABS, can not connect anti-; TLE6228 also can monitor the output state of each passage, by ST1-ST4 port output, is used for real-time communication with the master chip feedback; The STBY port is the standby mode of low power consumption, is connected with master chip, can pass through MCU quick closedown chip.
2. according to the described ABS solenoid valve control circuit based on high-frequency PWM of claim 1, it is characterized in that, the coil of 8 road high-speed switch electromagnetic valves is by two TLE6228 chip drives, and by changing the dutycycle of high-frequency PWM signal, the near-linear of realization spool aperture is regulated.
3. according to the described ABS solenoid valve control circuit based on high-frequency PWM of claim 2, it is characterized in that, the external 12V of the high-end module of electromagnetic valve coil, and it is high-end by the coil of two N-channel MOS pipe IPB80N04S3-H4 driving solenoid valves, for 8 way solenoid valves provide public high terminal voltage SOLCOM12V, because solenoid valve is inductive load, also needs external reverse fly-wheel diode 1N5817, can be by the discharge of fly-wheel diode loop after the outage.
4. according to the described ABS solenoid valve control circuit based on high-frequency PWM of claim 3, it is characterized in that, use the SPI serial communication between integrated IC TLE6212 and the master chip XC2364B, pass through the switch of SOL_RL port controlling N-channel MOS pipe then, thereby drive the high side circuitry of electromagnetic valve coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320084466 CN203115247U (en) | 2013-02-25 | 2013-02-25 | ABS electromagnetic valve control circuit based on high-frequency PWM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320084466 CN203115247U (en) | 2013-02-25 | 2013-02-25 | ABS electromagnetic valve control circuit based on high-frequency PWM |
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| CN203115247U true CN203115247U (en) | 2013-08-07 |
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| CN 201320084466 Expired - Lifetime CN203115247U (en) | 2013-02-25 | 2013-02-25 | ABS electromagnetic valve control circuit based on high-frequency PWM |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344055A (en) * | 2014-09-16 | 2015-02-11 | 三一重机有限公司 | Proportional electromagnetic valve driving method and system based on PWM (Pulse Width Modulation) |
| CN105487456A (en) * | 2016-01-22 | 2016-04-13 | 安徽江淮汽车股份有限公司 | Clutch solenoid valve control circuit and method |
| CN106382406A (en) * | 2016-11-01 | 2017-02-08 | 中车株洲电力机车有限公司 | High-frequency electromagnetic valve fine adjustment control method |
| CN110749438A (en) * | 2019-11-27 | 2020-02-04 | 杭州沃镭智能科技股份有限公司 | Performance detection device and detection method for ESC linear booster valve |
| CN113680409A (en) * | 2021-08-24 | 2021-11-23 | 中科计算技术西部研究院 | Automatic allocation and storage method and system |
-
2013
- 2013-02-25 CN CN 201320084466 patent/CN203115247U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344055A (en) * | 2014-09-16 | 2015-02-11 | 三一重机有限公司 | Proportional electromagnetic valve driving method and system based on PWM (Pulse Width Modulation) |
| CN105487456A (en) * | 2016-01-22 | 2016-04-13 | 安徽江淮汽车股份有限公司 | Clutch solenoid valve control circuit and method |
| CN106382406A (en) * | 2016-11-01 | 2017-02-08 | 中车株洲电力机车有限公司 | High-frequency electromagnetic valve fine adjustment control method |
| CN110749438A (en) * | 2019-11-27 | 2020-02-04 | 杭州沃镭智能科技股份有限公司 | Performance detection device and detection method for ESC linear booster valve |
| CN113680409A (en) * | 2021-08-24 | 2021-11-23 | 中科计算技术西部研究院 | Automatic allocation and storage method and system |
| CN113680409B (en) * | 2021-08-24 | 2022-12-06 | 中科计算技术西部研究院 | Automatic allocation and storage method and system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430205 No. 299, Guanggu Avenue, Donghu high tech Development Zone, Wuhan, Hubei Patentee after: Wuhan Yuanfeng automobile electronic control system Co.,Ltd. Address before: 430205 No. 299, Guanggu Avenue, Donghu high tech Development Zone, Wuhan, Hubei Patentee before: WUHAN YOUFIN ELECTRONIC CONTROL SYSTEM Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |