CN102582607A - Automobile brake boosting device based on direct-current motor - Google Patents
Automobile brake boosting device based on direct-current motor Download PDFInfo
- Publication number
- CN102582607A CN102582607A CN2012100229238A CN201210022923A CN102582607A CN 102582607 A CN102582607 A CN 102582607A CN 2012100229238 A CN2012100229238 A CN 2012100229238A CN 201210022923 A CN201210022923 A CN 201210022923A CN 102582607 A CN102582607 A CN 102582607A
- Authority
- CN
- China
- Prior art keywords
- machine
- connects
- peripheral circuit
- distance
- bus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Braking Systems And Boosters (AREA)
Abstract
The invention relates to an automobile brake boosting device based on a direct-current motor, which is characterized by comprising a direct-current motor braking booster and a direct-current motor controller. A stator and a bearing of the direct-current motor are fixed with a shell which is fixed on a partition board between a cab and an engine, oblique teeth are arranged on the inner wall of a rotor, a boosting push rod meshed with the oblique teeth is arranged in the rotor, one end of the boosting push rod penetrates through the partition board to contact with a piston push rod of an automotive brake master cylinder, the other end of the boosting push rod is connected with a brake pedal, and a pressure sensor is arranged at the bottom of the brake pedal and is connected with a vehicular CAN (control area network) bus. The direct-current motor controller comprises a single chip microcomputer, a CAN bus transceiving peripheral circuit and a motor PWM (pulse width modulation) driving peripheral circuit, wherein the CAN bus transceiving peripheral circuit is used for receiving pressure values from the vehicular CAN bus and transmitting the acquired values to the single chip microcomputer, the single chip microcomputer is used for generating PWM signals of a TTL (transistor-transistor logic) type and transmitting the signals to the motor PWM driving peripheral circuit, and the motor PWM driving peripheral circuit is used for converting the signals into PWM signals of an MOS (metal oxide semiconductor) type and transmitting to the direct-current motor so as to control operation of the direct-current motor. The automobile brake boosting device can be widely applied to braking systems of various automobiles.
Description
Technical field
The present invention relates to a kind of automobile brake work-saving device, particularly about a kind of automobile brake work-saving device that is useful in the automobile autobrake process based on DC machine.
Background technology
In existing automobile brake power-assisted technology; Generally be to utilize vacuum brake assistor or hydraulic braking servo-unit brake boost to be provided for chaufeur; The brake servo unit advantage of these two kinds of forms is that brake boost is obvious, and shortcoming is that volume ratio is bigger, under the very narrow situation of machinery space capacity; The existence of vacuum booster or hydraulic booster has brought inconvenience for undoubtedly the layout of various devices in the narrow and small machinery space.And the automobile automatic brake arrangement that is used for drive assist systems such as adaptive cruise control or active collision avoidance control at present also mainly is to realize through the reformation of electric control to vacuum booster or hydraulic booster; Such as electronic vacuum servo-unit (EVB) or electro-hydraulic brake (EHB) etc.; With upper type owing to relate to complicated pneumatic or fluid control; It is not ideal enough often to control effect, while mechanism's more complicated, and cost is higher.
Summary of the invention
To the problems referred to above, the purpose of this invention is to provide a kind of chaufeur normal brake application function, reliability height, control automobile brake work-saving device based on DC machine effective and simple in structure, easy for installation of not influencing.
For realizing above-mentioned purpose, the present invention takes following technical scheme: a kind of automobile brake work-saving device based on DC machine is characterized in that: it comprises a direct current motor braking servo-unit and a direct current electric machine controller; Said DC machine brake servo unit comprises a direct current motor; The two ends of the stator of said DC machine are provided with a bearing; Said stator and bearing are all fixed with the shell of said DC machine; The shell of said DC machine is fixed on the dividing plate between automobile cab and the automotive engine, and said rotor DC machine is hollow and its inwall is provided with helical teeth, is provided with the power-assisted push rod that is meshed with said helical teeth in the said rotor; One end of said power-assisted push rod passes said dividing plate and contacts with the master cylinder piston push rod of automobile; The other end of said power-assisted push rod connects the brake pedal of automobile, and said brake pedal bottom is provided with a pressure sensor, and the mouth of said pressure sensor connects automobile mounted CAN bus; Said DC motor controller comprises that a micro controller system, CAN bus transmitting-receiving peripheral circuit and a motor PWM drive peripheral circuit; Said CAN bus transmitting-receiving peripheral circuit receives from the force value of said voltage sensitive sensor from said vehicle-mounted CAN bus and sends to said micro controller system; The pwm signal of the TTL type that the brake system of car parameter generating one that said micro controller system foundation is provided with in advance is directly proportional with the force value of being gathered also sends to said motor PWM driving peripheral circuit; The pwm signal of said TTL type sends to its work of said DC MOTOR CONTROL after being converted into the pwm signal of MOS type through motor PWM driving peripheral circuit.
The CANL end of said CAN bus transmission circuit connects the low side of said vehicle-mounted CAN bus; The CANH end connects the high-end of said vehicle-mounted CAN bus; The mouth of said CAN bus transmission circuit connects the input end of said micro controller system; The ground terminal of said CAN bus transmission circuit is connected ground wire and power supply respectively with the power supply voltage end, and between said ground terminal and power supply voltage end, is connected with a filter regulator circuit, and said filter regulator circuit adopts two electric capacity to be connected in parallel.
Said motor PWM drives peripheral circuit and comprises that a chromacoder, a light are at a distance from element and MOSFET pipe; The pwm signal of the TTL type that said chromacoder sends said micro controller system converts the pwm signal of MOS type to; The mouth of said micro controller system connects the input end of said chromacoder; The mouth of said signal reforming unit connects the negative pole of said light at a distance from element, and said light links to each other with power supply through a current-limiting resistance at a distance from the positive pole of element, and said light connects the positive pole of automotive battery at a distance from the sets of elements electrode; Said light connects ground wire at a distance from the emitter of element through a current-limiting resistance; Simultaneously, said light is at a distance from the be connected in parallel grid of said MOSFET pipe of the emitter of element, and its drain electrode also connects the negative pole of said DC machine negative pole and automotive battery; And between drain electrode and said Vehicular accumulator cell, be connected with a diode, the positive pole of said DC machine connects the positive pole of said automotive battery.
The helical teeth lead angle of said power-assisted push rod and DC motor rotor meets the following conditions:
In the above-mentioned formula, ψ is a lead angle,
Be equivalent friction angle, f
vEqulvalent coefficient of friction for screw pair.
Said CAN bus transmitting-receiving peripheral circuit adopts PCA82C250 chip U2, and said signal processor unit adopts SN7407N chip U3, and said light adopts TLP521 chip U1 at a distance from element 232, and the model that said MOSFET pipe adopts is IRFZ48N.
The present invention is owing to take above technical scheme; It has the following advantages: 1, the present invention adopts a direct current motor; And on the inwall of the sleeve rotor of DC machine, helical teeth is set, meshes a power-assisted push rod through helical teeth, the power-assisted push rod connects the master cylinder piston push rod of automobile; And be provided with voltage sensitive sensor in the brake pedal bottom; During brake, the pressure signal that voltage sensitive sensor collection chaufeur is trampled brake pedal sends to DC motor controller through vehicle-mounted bus, and DC motor controller makes the power-assisted push rod promote the master cylinder piston push rod and sets up brake-pressure when adopting the Single-chip Controlling rotor rotation; Therefore can make automobile brake fast, reliability is high and control effective.2, the other end of power-assisted push rod of the present invention connects brake pedal; And the helical teeth lead angle of DC machine and power-assisted push rod satisfies certain condition; Therefore can guarantee can be not locked when radially unpowered; Rotor axial moves the power-assisted push rod in the effect lower edge of brake pedal, even can also rely on manpower to brake separately under the out-of-action situation of DC machine brake servo unit.3, compare with the brake rod device of existing vacuum booster or hydraulic booster; The present invention is based on DC motor structure brake system of car is transformed, and when making it can brake boost be provided, has discharged the space of machinery space greatly; And overcome the power-assisted defective of brake has just been arranged when when present automobile has only engine running degree of vacuum being arranged; On future pure electric car, vacuum pump and associated pipe have been save, effectively cost-cutting.The present invention is simple in structure, and is easy for installation, can be widely used in the brake system of all kinds of automobiles.
Description of drawings
Fig. 1 is a structure diagram of the present invention;
Fig. 2 is the structural representation of DC machine brake servo unit of the present invention;
Fig. 3 is a DC motor controller principle schematic of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed description.
Like Fig. 1, shown in Figure 2; Automobile brake work-saving device of the present invention comprises a direct current motor braking servo-unit 1 and a direct current electric machine controller 2; DC machine brake servo unit 1 comprises a direct current motor, and the two ends of the stator 11 of DC machine are respectively arranged with a bearing 12, and stator 11 is all fixed with the shell of DC machine with bearing 12; The shell of DC machine is fixed on the dividing plate 13 between automobile cab and the automotive engine; Rotor DC machine 14 is set to hollow and its inwall is provided with helical teeth, is provided with the power-assisted push rod 15 that is meshed with its helical teeth in the rotor 14, and an end of power-assisted push rod 15 passes dividing plate 13 and contacts with the master cylinder piston push rod 16 of automobile; The other end of power-assisted push rod 15 connects the brake pedal 17 of automobile; The bottom of brake pedal 17 is provided with a voltage sensitive sensor 18, is used to gather the size that the chaufeur glancing impact imposes on the power of brake pedal, and the mouth of voltage sensitive sensor 18 connects the vehicle-mounted CAN bus.
Like Fig. 2, shown in Figure 3, DC motor controller 2 comprises that a micro controller system 21, CAN bus transmitting-receiving peripheral circuit 22 and a motor PWM (pulse duration modulation) drive peripheral circuit 23.Wherein, CAN bus transmitting-receiving peripheral circuit 22 receives from the vehicle-mounted CAN bus from the force value of voltage sensitive sensor 18 and with this value and sends to micro controller system 21; The pwm signal of TTL (logic gates) type that the automobile brake parameter generating one that micro controller system 21 bases are provided with in advance is directly proportional with the force value of being gathered also sends in the motor PWM driving peripheral circuit 23; The pwm signal of TTL type sends to its work of DC MOTOR CONTROL after being converted into the pwm signal of MOS (metal oxide semiconductor) type through motor PWM driving peripheral circuit 23.In the embodiments of the invention, the model that micro controller system 21 can adopt Motorola Inc. to produce is the 8-bit microcontroller (as example, being not limited thereto) of MC9S08DZ60.
In the foregoing description; The CANL end of CAN bus transmission circuit 22 connects the low side of vehicle-mounted CAN bus; The CANH end connects the high-end of vehicle-mounted CAN bus; Be used to receive the pressure signal from voltage sensitive sensor 18, the mouth of CAN bus transmission circuit 22 connects the input end of micro controller system 21, is used for the pressure signal from voltage sensitive sensor 17 that receives is sent to micro controller system 21; The ground terminal of CAN bus transmission circuit 22 is connected ground wire and power line voltage VCC respectively with the power supply voltage end; And between ground terminal and power supply voltage end, be connected with a filter regulator circuit 221, filter regulator circuit 221 adopts two capacitor C 1, C2 to be connected in parallel, and the CAN bus transmission circuit 22 in the embodiment of the invention adopts PCA82C250 chip U2.
Among above-mentioned each embodiment, motor PWM drives peripheral circuit 23 and comprises that a chromacoder 231, a light manages 233 (metal oxide layer semiconductor field-effect transistors) at a distance from element 232 (photoelectric coupled device) with a MOSFET.The pwm signal of the TTL type that chromacoder 231 is used for micro controller system 21 is sent converts the pwm signal of MOS type to; The mouth of micro controller system 21 connects the input end of chromacoder 231; The mouth of signal reforming unit 231 connects the negative pole of light at a distance from element 232; The positive pole of the separated element 232 of light links to each other with power line voltage VCC through the current-limiting resistance R1 of one 510 Ω, and light is at a distance from the anodal 12V of the collecting electrode connection automotive battery of element 232, and the emitter of the separated element 232 of light passes through a current-limiting resistance and connects ground wire GND; Simultaneously; Light is at a distance from the be connected in parallel grid of MOSFET pipe 233 of the emitter of element 232, and the drain electrode PWMOUT1 of MOSFET pipe also connects the negative pole of DC machine negative pole and automotive battery, and drain and automotive battery between be connected with a diode D; The positive pole of DC machine connects the anodal 12V of automotive battery; Make diode D and DC machine be connected in parallel like this, guaranteed DC machine outage after, the residual electromotive force of DC machine can rapidly disappear through the loop that diode forms.Wherein, the signal processor unit 231 in the embodiment of the invention adopts SN7407N chip U3, and light adopts TLP521 chip U4 at a distance from element 232, and MOSFET pipe 233 adopts IRFZ48N.
Among above-mentioned each embodiment; The brake system of car parameter k that micro controller system 21 is provided with in advance draws according to experiment; Herewith the size of value is not inequality yet according to the real electrical machinery characteristic, when chaufeur is applied to the treadle effort maximum of brake pedal 17 when emergency braking, collects the force value m of this moment through voltage sensitive sensor 18; K=100/m calculates k through this formula; For example the maximum pressure value of the brake pedal that collects of voltage sensitive sensor 18 is 1000N, and calculating k is 0.1, and promptly the size of pwm signal dutycycle is 0.1 times of brake pedal force.
Among above-mentioned each embodiment, in order to make DC machine when output, power-assisted push rod 15 and rotor DC machine 14 can self-lockings, and the helical teeth lead angle of the two should satisfy following condition:
In the above-mentioned formula, ψ is a lead angle,
Be equivalent friction angle, f
vEqulvalent coefficient of friction for screw pair.In the embodiments of the invention, f
vBe 0.12,
Be 6.8deg, ψ is 20deg.Under the condition of above-mentioned formula restriction; Power-assisted push rod 15 both can axially move under the effect of DC motor rotor output torque; Also can under the application force of brake pedal 17, axially move; In case thereby when having guaranteed that under special circumstances DC machine brake servo unit 1 is inoperative, chaufeur carries out brake operating through trampling brake pedal.
Among above-mentioned each embodiment, voltage sensitive sensor 18 can adopt the MLA-1KNA of TML company.
Detailed process of the present invention is: when automobile needs glancing impact, chaufeur is trampled brake pedal 17, and voltage sensitive sensor 18 sends to the force value signal in the CAN bus transmitting-receiving peripheral circuit 22 through the vehicle-mounted CAN bus; CAN bus transmitting-receiving peripheral circuit 22 sends to micro controller system 21 with force value, and micro controller system 21 is handled the force value of gathering according to k and produced the pwm signal that is directly proportional with the force value size, when the pwm signal that sends when micro controller system 21 is low level; Light is at a distance from element 232 conductings; The grid of MOSFET pipe 233 is a high level, conducting between the drain electrode of this moment and the source electrode, and the circuit of DC machine forms the loop; DC machine is started working; Rotor 14 begins to rotate, in the time of rotor 14 rotations and its ingear power-assisted push rod 15 under the application force of rotor helical teeth, obtain an antagonistic force forward; Thereby be transformed into rotor rotation the axial motion of power-assisted push rod 14; Promote the master cylinder piston through power-assisted push rod 14 and set up brake-pressure, the dutycycle of pwm signal is high more, and the speed of DC machine output is big more; Otherwise when the pwm signal that sends when micro controller system 21 was high level, light was at a distance from element 232 not conductings, and the grid of MOSFET pipe 233 is a low level, also not conducting between the drain electrode of this moment and the source electrode, and the direct current circuit loop is broken off, and brake pedal loosens.When DC machine can not be worked; The power that chaufeur is trampled brake pedal 17 also can act on the power-assisted push rod 15; Through its helical teeth and core motor rotor 14 inwall helical teeth mutual actions, make rotor 14 rotations, promote 15 reaches of power-assisted push rod simultaneously and realize artificial braking.
Above-mentioned each embodiment only is used to explain the present invention; Wherein the structure of each parts, the position is set and connection mode all can change to some extent; Every equivalents of on the basis of technical scheme of the present invention, carrying out and improvement all should not got rid of outside protection scope of the present invention.
Claims (7)
1. automobile brake work-saving device based on DC machine, it is characterized in that: it comprises a direct current motor braking servo-unit and a direct current electric machine controller; Said DC machine brake servo unit comprises a direct current motor; The two ends of the stator of said DC machine are provided with a bearing; Said stator and bearing are all fixed with the shell of said DC machine; The shell of said DC machine is fixed on the dividing plate between automobile cab and the automotive engine, and said rotor DC machine is hollow and its inwall is provided with helical teeth, is provided with the power-assisted push rod that is meshed with said helical teeth in the said rotor; One end of said power-assisted push rod passes said dividing plate and contacts with the master cylinder piston push rod of automobile; The other end of said power-assisted push rod connects the brake pedal of automobile, and said brake pedal bottom is provided with a pressure sensor, and the mouth of said pressure sensor connects automobile mounted CAN bus;
Said DC motor controller comprises that a micro controller system, CAN bus transmitting-receiving peripheral circuit and a motor PWM drive peripheral circuit; Said CAN bus transmitting-receiving peripheral circuit receives from the force value of said voltage sensitive sensor from said vehicle-mounted CAN bus and sends to said micro controller system; The pwm signal of the TTL type that the brake system of car parameter generating one that said micro controller system foundation is provided with in advance is directly proportional with the force value of being gathered also sends to said motor PWM driving peripheral circuit; The pwm signal of said TTL type sends to its work of said DC MOTOR CONTROL after being converted into the pwm signal of MOS type through motor PWM driving peripheral circuit.
2. a kind of automobile brake work-saving device as claimed in claim 1 based on DC machine; It is characterized in that: the CANL end of said CAN bus transmission circuit connects the low side of said vehicle-mounted CAN bus; The CANH end connects the high-end of said vehicle-mounted CAN bus; The mouth of said CAN bus transmission circuit connects the input end of said micro controller system; The ground terminal of said CAN bus transmission circuit is connected ground wire and power supply respectively with the power supply voltage end, and between said ground terminal and power supply voltage end, is connected with a filter regulator circuit, and said filter regulator circuit adopts two electric capacity to be connected in parallel.
3. a kind of automobile brake work-saving device as claimed in claim 1 based on DC machine; It is characterized in that: said motor PWM drives peripheral circuit and comprises that a chromacoder, a light are at a distance from element and MOSFET pipe; The pwm signal of the TTL type that said chromacoder sends said micro controller system converts the pwm signal of MOS type to; The mouth of said micro controller system connects the input end of said chromacoder; The mouth of said signal reforming unit connects the negative pole of said light at a distance from element, and said light links to each other with power supply through a current-limiting resistance at a distance from the positive pole of element, and said light connects the positive pole of automotive battery at a distance from the sets of elements electrode; Said light connects ground wire at a distance from the emitter of element through a current-limiting resistance; Simultaneously, said light is at a distance from the be connected in parallel grid of said MOSFET pipe of the emitter of element, and its drain electrode also connects the negative pole of said DC machine negative pole and automotive battery; And between drain electrode and said Vehicular accumulator cell, be connected with a diode, the positive pole of said DC machine connects the positive pole of said automotive battery.
4. a kind of automobile brake work-saving device as claimed in claim 2 based on DC machine; It is characterized in that: said motor PWM drives peripheral circuit and comprises that a chromacoder, a light are at a distance from element and MOSFET pipe; The pwm signal of the TTL type that said chromacoder sends said micro controller system converts the pwm signal of MOS type to; The mouth of said micro controller system connects the input end of said chromacoder; The mouth of said signal reforming unit connects the negative pole of said light at a distance from element, and said light links to each other with power supply through a current-limiting resistance at a distance from the positive pole of element, and said light connects the positive pole of automotive battery at a distance from the sets of elements electrode; Said light connects ground wire at a distance from the emitter of element through a current-limiting resistance; Simultaneously, said light is at a distance from the be connected in parallel grid of said MOSFET pipe of the emitter of element, and its drain electrode also connects the negative pole of said DC machine negative pole and automotive battery; And between drain electrode and said Vehicular accumulator cell, be connected with a diode, the positive pole of said DC machine connects the positive pole of said automotive battery.
5. like claim 1 or 2 or 3 or 4 described a kind of automobile brake work-saving devices based on DC machine, it is characterized in that: the helical teeth lead angle of said power-assisted push rod and DC motor rotor meets the following conditions:
In the above-mentioned formula, ψ is a lead angle,
Be equivalent friction angle, f
vEqulvalent coefficient of friction for screw pair.
6. like claim 1 or 2 or 3 or 4 described a kind of automobile brake work-saving devices based on DC machine; It is characterized in that: said CAN bus transmitting-receiving peripheral circuit adopts PCA82C250 chip U2; Said signal processor unit adopts SN7407N chip U3; Said light adopts TLP521 chip U1 at a distance from element 232, and the model that said MOSFET pipe adopts is IRFZ48N.
7. a kind of automobile brake work-saving device as claimed in claim 5 based on DC machine; It is characterized in that: said CAN bus transmitting-receiving peripheral circuit adopts PCA82C250 chip U2; Said signal processor unit adopts SN7407N chip U3; Said light adopts TLP521 chip U4 at a distance from element 232, and the model that said MOSFET pipe adopts is IRFZ48N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100229238A CN102582607A (en) | 2012-02-02 | 2012-02-02 | Automobile brake boosting device based on direct-current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100229238A CN102582607A (en) | 2012-02-02 | 2012-02-02 | Automobile brake boosting device based on direct-current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102582607A true CN102582607A (en) | 2012-07-18 |
Family
ID=46472024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100229238A Pending CN102582607A (en) | 2012-02-02 | 2012-02-02 | Automobile brake boosting device based on direct-current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102582607A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697797A (en) * | 2015-02-16 | 2015-06-10 | 宁波拓普智能刹车系统有限公司 | Electronic brake booster control motor calibration test equipment |
| CN105068570A (en) * | 2015-08-04 | 2015-11-18 | 苏州登顶医疗科技有限公司 | Medical enema machine capable of automatically adjusting pressure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005114005A (en) * | 2003-10-07 | 2005-04-28 | Honda Motor Co Ltd | Electric brake device |
| CN101058311A (en) * | 2006-04-20 | 2007-10-24 | 上海华普汽车有限公司 | Booster braking device for automobile |
| CN101311046A (en) * | 2008-04-25 | 2008-11-26 | 浙江亚太机电股份有限公司 | Electric mechanical type brake system electric control unit based on CAN bus network communication |
| CN102015397A (en) * | 2008-04-30 | 2011-04-13 | 罗伯特.博世有限公司 | Electromechanical brake booster |
| CN202541516U (en) * | 2012-02-02 | 2012-11-21 | 北京智华驭新汽车电子技术开发有限公司 | Automobile braking assistance device based on direct current motor |
-
2012
- 2012-02-02 CN CN2012100229238A patent/CN102582607A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005114005A (en) * | 2003-10-07 | 2005-04-28 | Honda Motor Co Ltd | Electric brake device |
| CN101058311A (en) * | 2006-04-20 | 2007-10-24 | 上海华普汽车有限公司 | Booster braking device for automobile |
| CN101311046A (en) * | 2008-04-25 | 2008-11-26 | 浙江亚太机电股份有限公司 | Electric mechanical type brake system electric control unit based on CAN bus network communication |
| CN102015397A (en) * | 2008-04-30 | 2011-04-13 | 罗伯特.博世有限公司 | Electromechanical brake booster |
| CN202541516U (en) * | 2012-02-02 | 2012-11-21 | 北京智华驭新汽车电子技术开发有限公司 | Automobile braking assistance device based on direct current motor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697797A (en) * | 2015-02-16 | 2015-06-10 | 宁波拓普智能刹车系统有限公司 | Electronic brake booster control motor calibration test equipment |
| CN104697797B (en) * | 2015-02-16 | 2018-02-27 | 宁波拓普智能刹车系统有限公司 | A kind of electronic brake booster controlled motor demarcation test equipment |
| CN105068570A (en) * | 2015-08-04 | 2015-11-18 | 苏州登顶医疗科技有限公司 | Medical enema machine capable of automatically adjusting pressure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101041333A (en) | Brake power generating method and system by employing new automobile brake energy recovery retarder | |
| CN102166963A (en) | Brake energy feedback control method of pure electric automobile | |
| CN102700419B (en) | Parallel-type braking energy recovery system and control method thereof | |
| CN102166962A (en) | Brake energy feedback control system of pure electric automobile | |
| CN103253258B (en) | Control method for braking vacuum booster system of battery electric vehicles | |
| CN201841967U (en) | Motor vehicle brake energy recycle control device | |
| CN202541516U (en) | Automobile braking assistance device based on direct current motor | |
| CN104972919A (en) | Energy distribution device and method for distributed electric vehicle driving compound energy source | |
| CN102442292A (en) | Electric power assisting device of braking system and running method of electric power assisting device | |
| CN203601023U (en) | Intelligent error-stepping preventing accelerator protection system | |
| CN112757905A (en) | Electronic mechanical brake system | |
| CN102582607A (en) | Automobile brake boosting device based on direct-current motor | |
| CN104908608B (en) | A kind of electric automobile motor drive system integrating device | |
| CN106335373B (en) | Underground coal mine four motorized wheels brake energy recovering system of electric vehicle and method | |
| CN201953479U (en) | Engine | |
| CN103253246B (en) | Multifunctional brake valve and power-driven vehicle | |
| CN202029698U (en) | Chassis of electric vehicles | |
| CN207611254U (en) | A kind of super capacitor controller for electric vehicle based on CAN bus | |
| CN102806874B (en) | Clutch and brake mechanism and energy recovery system of pure electric vehicle | |
| CN104494462A (en) | Control method of electric car driving motor | |
| CN207274416U (en) | Four-wheel drive electric automobile transmission system | |
| CN202806425U (en) | Soft start controller for high-power electric vehicles | |
| CN205651986U (en) | Electric car brake energy recovery system | |
| CN206067514U (en) | Underground coal mine four motorized wheels brake energy recovering system of electric vehicle | |
| CN104057840A (en) | Ramp parking starting assistance system of electric automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |