CN104442749A - Electronic parking brake control method and system adopting same - Google Patents
Electronic parking brake control method and system adopting same Download PDFInfo
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- CN104442749A CN104442749A CN201410690373.6A CN201410690373A CN104442749A CN 104442749 A CN104442749 A CN 104442749A CN 201410690373 A CN201410690373 A CN 201410690373A CN 104442749 A CN104442749 A CN 104442749A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
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- Gear-Shifting Mechanisms (AREA)
Abstract
The invention provides an electronic parking brake control method and a system adopting the electronic parking brake control method. The electronic parking brake control method comprises the steps that firstly, an electronic parking brake controller obtains and stores the threshold value of a parking brake arm at a limit position when parking brake succeeds; secondly, the electronic parking brake controller obtains the real-time position information of the parking brake arm and the gear information of a vehicle shift lever and controls the vehicle to enter or stop a parking brake state. The electronic parking brake control method and the system adopting the electronic parking brake control method aim to solve the problems that by the adoption of an existing electronic parking brake control method, every time after a vehicle is electrified, electronic parking brake self-learning operation needs to be conducted, every time the self-learning operation is conducted, a drive motor needs to stall, so that the service life of the drive motor is shortened, and then the reliability of an electronic parking brake system is lowered.
Description
Technical field
The present invention relates to electronic parking technical field, particularly a kind of electronic parking control method and apply its system.
Background technology
Electronic brake system refers to and the provisional braking in driving conditions and the long time property braking function after stopping is combined, and realizes the technology of stopping brake by electronic control mode.
Electronic parking control system generally includes drive motor, tachogen and lockable mechanism; Wherein, lockable mechanism comprises parking cam and parking arm.In practical application, after each automobile powers on, electronic parking control system is in order to ensure that the parking cam in lockable mechanism coordinates put in place (namely parking cam and parking arm are in interlocking pattern) with parking arm, all to carry out electronic parking self study operation, to ensure each all parkings success of vehicle, avoid potential safety hazard occurs.Particularly, the process of electronic parking self study generally includes: make drive motor stall (put at parking shift-P gear and add stall mechanism), the rotating speed of tachogen induction drive motor; When drive motor exports without rotating speed, illustrate that parking cam is engaged with parking arm, lockable mechanism is in initial condition, automobile parking success; When drive motor still has rotating speed to export, illustrate that parking cam is not engaged with parking arm, lockable mechanism is in non-initial state, automobile parking is unsuccessful, now drive motor is rotated further, and drives parking camming movement, until be engaged with parking arm, tachogen induction drive motor exports without rotating speed, then automobile parking success.When Subsequent electronic parking control system receives unblock demand, lockable mechanism unlocks, so that automobile can travel smoothly; Meanwhile, electronic parking control system during electricity, needs lockable mechanism to reset (being namely in initial condition), ensures that automobile is in parked state, and so that when next automobile powers on, carry out electronic parking self study operation under each automobile.
But, electronic parking control method of the prior art, after each automobile powers on, all to carry out electronic parking self study operation, and each self study operation all needs drive motor stall, thus cause the lost of life of drive motor, and then the reliability of electronic parking control system is caused to reduce.
Summary of the invention
In view of this, the present invention is intended to the system proposing a kind of electronic parking control method and apply it, to solve electronic parking control method of the prior art, after each automobile powers on, all to carry out electronic parking self study operation, and each self study operation all needs drive motor stall, thus cause the drive motor lost of life, and then the problem causing electronic parking control system reliability to reduce.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of electronic parking control method, comprising: when step 1, electronic parking controller obtain and store parking success, parking arm is in the threshold value of end position; Step 2, described electronic parking controller obtain the real-time position information of described parking arm and the gear information of automobile shifting rod, and control described automobile and enter or remove parked state.
Wherein, described step 1 specifically comprises: step 11, described electronic parking controller control drive motor work, and described drive motor drives parking cam to move to parking arm; Step 12, described parking cam compress described parking arm and move downward, the movement position of parking arm described in position transduser Real-Time Monitoring; Step 13, described parking arm move to end position, described parking cam and parking arm locked, make described drive motor stall; Meanwhile, the end position information of described parking arm is sent to described electronic parking controller by described position transduser; Step 14, described electronic parking controller control described drive motor and quit work, and make described automobile enter parked state; Described electronic parking controller stores described end position information.
Particularly, also comprise before described step 11: step 111, automobile power on, and make described electronic parking controller in running order; The described gear level of step 112, manipulation automatic transmission with hydraulic torque converter is in parking shift.
Further, described step 13 specifically comprises: step 131, described parking arm move to described end position, described parking cam and parking arm locked, make described drive motor stall; Step 132, described position transduser convert the end position information of described parking arm to first information of voltage; Described first information of voltage is sent to described electronic parking controller by step 133, described position transduser.
Further, described step 14 specifically comprises: step 141, described electronic parking controller control described drive motor and quit work, and make described automobile enter parked state; Step 142, described electronic parking controller receive and store described first information of voltage, and described first information of voltage is for judging the successful threshold value of follow-up described automobile parking.
Preferably, described threshold value is the aviation value of described parking arm when end position that test of many times obtains.
During practical application, described step 2 specifically comprises: step 21, automobile power on, and makes described electronic parking controller in running order; Step 22, described position transduser monitor the location information of described parking arm, and described location information are converted to the second information of voltage and send to described electronic parking controller; Described second information of voltage and described first information of voltage compare by step 23, described electronic parking controller, judge whether described automobile is in parked state; Step 24, when described second information of voltage is equal with described first information of voltage, described electronic parking controller judges that described automobile is in parked state; When step 25, described electronic parking controller judge that described gear level is in driving gear, described electronic parking controller controls described drive motor and rotates, and drives described parking cam and described parking arm to depart from, and makes described automobile remove parked state.
Wherein, specifically also comprise after described step 25: step 31, described electronic parking controller judge the gear information of described gear level; The displacement information of parking arm described in described position transduser Real-Time Monitoring, and generate tertiary voltage information; Described tertiary voltage information is sent to described electronic parking controller by step 32, described position transduser; Step 33, described electronic parking controller judge that described gear level is in parking shift, when described electronic parking controller judges that described tertiary voltage information is equal with described first information of voltage, described electronic parking controller controls described drive motor and quits work, complete the locked of described parking cam and parking arm, make described automobile enter parked state.
Particularly, also comprise after described step 33: electricity under step 34, automobile, makes described automotive be held in parked state.
Relative to prior art, electronic parking control method of the present invention has following advantage:
In electronic parking control method provided by the invention, comprising: the threshold value of parking arm when end position when electronic parking controller obtains and stores parking success; Electronic parking controller obtains the real-time position information of parking arm and the gear information of automobile shifting rod, and controls automobile and enter or remove parked state.Analyze known thus, in electronic parking control method provided by the invention, electronic parking controller is by the end position information storage of parking arm, and in order to judge the successful threshold value of follow-up automobile parking, passing threshold instead of the stall of drive motor; Simultaneously electronic parking controller can carry out Real-Time Monitoring to the gear information of the movement position of parking arm and gear level, and controls automobile and enter or remove parked state.Therefore avoid in the electronic parking control method of prior art, after automobile powers at every turn, the electronic parking self study of drive motor stall all will be carried out to operate, thus electronic parking control method provided by the invention effectively can improve the life-span of drive motor, and then ensure the high reliability of electronic parking control system.
The present invention also provides a kind of electronic parking control system, comprises electronic parking controller and electronic parking actuating unit; Described electronic parking controller can be used in the gear information obtaining automobile shifting rod; Described electronic parking actuating unit comprises the drive motor be connected with described electronic parking controller, the output shaft of described drive motor is connected with parking cam, and described drive motor drives described parking cam axial motion; The parking arm of described electronic parking actuating unit is provided with position transduser, and described position transduser is connected with described electronic parking controller, for the location information of parking arm described in Real-Time Monitoring; When described parking cam compresses described parking arm to end position, described position transduser monitors described parking arm in the threshold value of end position and location information.
The Dominant Facies that described electronic parking control system and above-mentioned electronic parking control method have relative to prior art is same, does not repeat them here.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of the electronic parking control method described in the embodiment of the present invention;
Fig. 2 is the idiographic flow schematic diagram of step 1 in the electronic parking control method described in the embodiment of the present invention;
Fig. 3 is the idiographic flow schematic diagram before step 11 in the electronic parking control method described in the embodiment of the present invention;
Fig. 4 is the idiographic flow schematic diagram of step 13 in the electronic parking control method described in the embodiment of the present invention;
Fig. 5 is the idiographic flow schematic diagram of step 14 in the electronic parking control method described in the embodiment of the present invention;
Fig. 6 is the idiographic flow schematic diagram of step 2 in the electronic parking control method described in the embodiment of the present invention;
Fig. 7 is the idiographic flow schematic diagram after step 25 in the electronic parking control method described in the embodiment of the present invention;
Fig. 8 is the structural representation of electronic parking actuating unit in the electronic parking control system described in the embodiment of the present invention.
Description of reference numerals:
1-drive motor, 2-leading screw, 3-anchor fitting, 4-mobile device, 5-first spring, 6-parking cam, 7-parking arm, 8-position transduser, 91-second spring, 92-fixed arm, 921-groove, 93-latch.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
The embodiment of the present invention provides a kind of electronic parking control method, as shown in Figure 1, comprising: when step 1, electronic parking controller obtain and store parking success, parking arm is in the threshold value of end position; Step 2, electronic parking controller obtain the real-time position information of parking arm and the gear information of automobile shifting rod, and control automobile and enter or remove parked state.
In the electronic parking control method that the embodiment of the present invention provides, comprising: the threshold value of parking arm when end position when electronic parking controller obtains and stores parking success; Electronic parking controller obtains the real-time position information of parking arm and the gear information of automobile shifting rod, and controls automobile and enter or remove parked state.Analyze known thus, in the electronic parking control method that the embodiment of the present invention provides, electronic parking controller is by the end position information storage of parking arm, and in order to judge the successful threshold value of follow-up automobile parking, passing threshold instead of the stall of drive motor; Simultaneously electronic parking controller can carry out Real-Time Monitoring to the gear information of the movement position of parking arm and gear level, and controls automobile and enter or remove parked state.Therefore avoid in the electronic parking control method of prior art, after automobile powers at every turn, the electronic parking self study of drive motor stall all will be carried out to operate, thus the electronic parking control method that the embodiment of the present invention provides effectively can improve the life-span of drive motor, and then ensure the high reliability of electronic parking control system.
During practical application, as shown in Figure 2, above-mentioned steps 1 specifically comprises: step 11, electronic parking controller control drive motor work, and drive motor drives parking cam to move to parking arm; Step 12, parking cam compress parking arm and move downward, the movement position of position transduser Real-Time Monitoring parking arm; Step 13, parking arm move to end position, make parking cam and parking arm locked, make drive motor stall; Meanwhile, the end position information of parking arm is sent to electronic parking controller by position transduser; Step 14, electronic parking controller control drive motor and quit work, and make automobile enter parked state; Electronic parking controller storage limit location information.Therefore, in the electronic parking control method that the embodiment of the present invention provides, by position transduser, Real-Time Monitoring is carried out to the movement position of parking arm, and by electronic parking controller by the end position information storage of parking arm during drive motor stall, in order to as judging the successful threshold value of follow-up automobile parking, thus avoid the phenomenon of drive motor stall in the electronic parking control method of prior art, and then effectively can improve the life-span of drive motor, ensure the high reliability of electronic parking control system.
Wherein, in order to power to electronic parking controller, and threshold value can be obtained smoothly, as shown in Figure 3, can also comprise before above-mentioned steps 11: step 111, automobile power on, and make electronic parking controller in running order; The gear level of step 112, manipulation automatic transmission with hydraulic torque converter is in parking shift.Particularly, the manual operation in actual application can be: automobile key is screwed to " ON " state by staff, makes vehicle fire, namely makes car load power on simultaneously; Now, electronic parking controller also powers on, and in running order.Staff stirs the gear level since change-speed box, makes gear level be in parking shift.During practical application, only have when gear level is in parking shift, and electronic parking controller is when being in power-up state, self study operating process in the electronic parking control method of above-mentioned steps 11 to step 14 just can be carried out, and usually this process car load roll off the production line dispatch from the factory time or vehicle return maintenance station time, triggered by operated by personnel.
Particularly, for the ease of transmission and the storage of parking arm end position information, as shown in Figure 4, above-mentioned steps 13 specifically can also comprise: step 131, parking arm move to end position, make parking cam and parking arm locked, make drive motor stall; Step 132, position transduser convert the end position information of parking arm to first information of voltage; First information of voltage is sent to electronic parking controller by step 133, position transduser.Therefore, in actual application when position transduser and electronic parking controller adopt rigid line to be connected, the signal transduction process of voltage form is comparatively simple and stable, and the storage of information is also more convenient, has good feasibility.
Further, as shown in Figure 5, above-mentioned steps 14 specifically can also comprise: step 141, electronic parking controller control drive motor and quit work, and make automobile enter parked state; Step 142, electronic parking controller receive and store the first information of voltage, this first information of voltage is for judging the successful threshold value of follow-up automobile parking, this threshold value is critical value when drive motor is in stall, now parking arm and parking cam should be interlocking pattern, make automobile be in parked state; Further, this threshold value can numerical value when parking arm normally moves in routine use process as follow-up automobile.
Preferably, in order to ensure validity and the accuracy of parking arm end position information, during practical application, the aviation value of parking arm when end position that above-mentioned threshold value can obtain for test of many times.Wherein, this is not restricted for concrete test number, is preferably no less than three times.
During practical application, as shown in Figure 6, above-mentioned steps 2 specifically can comprise: step 21, automobile power on, and makes electronic parking controller in running order; The location information of step 22, position transduser monitoring parking arm, and convert this location information to second information of voltage and send to electronic parking controller; Second information of voltage and the first information of voltage compare by step 23, electronic parking controller, judge whether automobile is in parked state; Step 24, when the second information of voltage is equal with the first information of voltage, electronic parking controller judges that automobile is in parked state; When step 25, electronic parking controller judge that gear level is in driving gear, electronic parking controller controls drive motor and rotates, and drives parking cam and parking arm to depart from, and makes automobile remove parked state.Thus, the location information that electronic parking controller can judge parking arm whether with the gear information matches of gear level, if do not mated, then electronic parking controller carries out ACTIVE CONTROL, and the position of parking arm 6 is mated with the gear of gear level; Namely, when gear level is in driving shelves, electronic parking controller can ACTIVE CONTROL make automobile remove parked state.
Wherein, as shown in Figure 7, specifically can also comprise after above-mentioned steps 25: step 31, electronic parking controller judge the gear information of gear level; Meanwhile, the displacement information of position transduser Real-Time Monitoring parking arm, and generate tertiary voltage information; Tertiary voltage information is sent to electronic parking controller by step 32, position transduser; Step 33, electronic parking controller judge that gear level is in parking shift, and when tertiary voltage information is equal with the first information of voltage, electronic parking controller controls drive motor and quits work, and completes the locked of parking cam and parking arm, makes automobile enter parked state.Thus when automobile parking is unsuccessful, electronic parking controller can the concrete displacement information of Real-Time Monitoring current parking arm, and makes parking arm and parking cam be in interlocking pattern, until automobile enters parked state.
Particularly, also specifically comprise after above-mentioned steps 33: electricity under step 34, automobile, makes automotive be held in parked state, thus completes the operating process of whole electronic parking control.
It should be noted that, in the actual use procedure of follow-up automobile, the location information of the parking arm corresponding with the second information of voltage, is generally the present position of parking arm corresponding to the gear of gear level during electricity under automobile last time herein.Particularly, usually have two kinds of situations: when under automobile last time during electricity, when gear level is in parking shift, the present position of now corresponding parking arm is position when be engaged with parking cam, is also that the second information of voltage equals the first information of voltage; When under automobile last time during electricity, when gear level is in driving gear, the present position of now corresponding parking arm was position when being in non-occlusive state with parking cam, and also namely the second information of voltage is not equal to the first information of voltage.In addition, when gear information this automobile corresponding of gear level powers on, the operation information of chaufeur, can be divided into parked state and driving states usually, i.e. the corresponding parking shift of parked state, driving states corresponding row car stop.
Due to, in electronic parking control method of the prior art, under each automobile during electricity, parking cam is all needed to be engaged with parking arm, lockable mechanism is made to be in initial condition, thus cause chaufeur under automobile, move operation cannot be carried out to vehicle when electricity, when therefore there is suddenly power down situation in vehicle travel process, can security threat be produced.But, in the electronic parking control method that the embodiment of the present invention provides, under automobile during electricity, lockable mechanism necessarily need not return parking shift, and parking controller stores the location information of parking arm before lower electricity, and therefore chaufeur can when automobile local power down or car load power down, still associative operation is carried out to vehicle, avoid situation about occurring to lose control of one's vehicle, thus ensure the stability of parking control system, improve the safe class of parking control system.
Wherein, under corresponding automobile last time during electricity, different control processs when gear level is in parking shift or driving gear are specifically as follows: electronic parking controller receives and judges the gear information of gear level; When gear information is driving gear, and when the second information of voltage is not equal to the first information of voltage, electronic parking controller keeps the current location of parking arm; Or gear information is parking shift, and when the second information of voltage equals the first information of voltage, electronic parking controller keeps the current location of parking arm; Or gear information is driving gear, and when the second information of voltage equals the first information of voltage, electronic parking controller changes the current location of parking arm; Or gear information is parking shift, and when the second information of voltage is not equal to the first information of voltage, electronic parking controller changes the current location of parking arm.
Particularly, when gear information is parking shift, and the second information of voltage is when being not equal to the first information of voltage, the detailed process that electronic parking controller changes parking arm current location can be: first, electronic parking controller controls drive motor work, and drive motor drives parking cam to move to parking arm; Meanwhile, the moving displacement of position transduser Real-Time Monitoring parking arm, and convert this moving displacement information to tertiary voltage information and send to electronic parking controller; Then, electronic parking controller judges that whether tertiary voltage information is equal with the first information of voltage.When tertiary voltage information is equal with the first information of voltage, automobile parking success, electronic parking controller completes control process; When tertiary voltage information and the first information of voltage unequal time, automobile parking is unsuccessful, and electronic parking controller proceeds ACTIVE CONTROL, and the position of parking arm is mated with the gear of gear level, thus make automobile parking success.
When gear information is driving gear, and when the second information of voltage equals the first information of voltage, the process that electronic parking controller changes the current location of parking arm is releasing process, namely removes the parked state of automobile.In practical application, concrete process can be: electronic parking controller controls drive motor and rotates, counting machine starts to record tacho-pulse number (n), and storing driver motor often transduce cause parking arm motion displacement (s), the displacement of advancing of final parking arm equals the displacement (n*s) that pulse number is multiplied by motion, when displacement of advancing reaches the displacement unlocking target call, automobile unlocks successfully, is in driving states.
A kind of electronic parking control system, use above-mentioned electronic parking control method, wherein, electronic parking control system specifically can comprise the electronic parking controller (not shown) and electronic parking actuating unit (shown in Fig. 8) that can be used in obtaining automobile shifting rod gear information.Wherein, electronic parking controller can comprise memory device, and memory device can be used in storing the first information of voltage corresponding to parking arm end position, can also be used for storing the target call displacement etc. when parking arm unlocks simultaneously; Further, electronic parking controller can be connected with the gear level of automatic transmission with hydraulic torque converter, for receiving the gear information of gear level.
Wherein, in order to realize the operability of control process, electronic parking actuating unit can comprise the drive motor 1 and position transduser 8 that are connected with electronic parking controller rigid line, thus realizes the stable delivery of the signals such as control.Particularly, as shown in Figure 8, electronic parking actuating unit can comprise the leading screw 2 that one end is connected with the output shaft of drive motor 1, and this leading screw 2 can be provided with anchor fitting 3, and anchor fitting 3 can realize the fixed pedestal of leading screw 2 and electronic parking actuating unit.Wherein, the other end of leading screw 2 can be connected with mobile device 4, is specifically as follows and is threaded, thus the rotation of drive motor 1 output shaft can drive leading screw 2 to rotate, the rotation of leading screw 2 can drive mobile device 4 to carry out curvilinear motion, converts straight-line motion to by circular movement.During practical application, as shown in Figure 8, mobile device 4 can move at left and right directions, such as, when drive motor 1 rotates forward, mobile device 4 can be driven to move right by leading screw 2, realize the parking process of vehicle; When drive motor 1 reverses, mobile device 4 can be driven to left movement by leading screw 2, realize releasing process.
Further, locking (parking) process that parking arm 7 is concrete, as shown in Figure 8, the outer end of mobile device 4 can be connected with parking cam 6 by the first spring 5; Simultaneously, parking arm 7 can be provided with in the downside of the axial bearing of trend of parking cam 6, this parking arm 7 can with parking cam 6 free-running fit, thus drive motor 1 can drive leading screw 2 to rotate, leading screw 2 can drive mobile device 4 to move right, and compresses parking arm 7 and move downward, until parking cam 6 is engaged completely with parking arm 7, drive motor 1 cannot be rotated further, i.e. locking success, automobile is in parked state.Particularly, parking arm 7 can be provided with position transduser 8, for the movement position of Real-Time Monitoring parking arm 7, ensure monitoring accuracy; And position transduser 8 can detect the threshold value of parking arm 7 when end position, prevent drive motor 1 from stall phenomenon occurring in routine use; In addition, the downside of parking arm 7 also can be provided with spring usually, thus when parking cam 6 is to left movement, and parking arm 7 can upward movement under the action of the spring, be returned to the physical slot shown in figure, so as during next parking again with parking cam 6 cooperating.
Preferably, in order to Emergency time or other in particular cases, can people for carrying out the parking unblock parked state of automobile (remove), as shown in Figure 8, the axial bearing of trend of parking cam 6 can also be arranged at intervals with emergency unlocking mechanism.Particularly, emergency unlocking mechanism can comprise the second spring 91, and this second spring 91 can be connected with fixed arm 92; Wherein, one end that fixed arm 92 is relative with parking cam 6 can be provided with groove 921, and groove 921 lateral wall can be provided with latch 93, when parking cam 6 moves right and is engaged completely with parking arm 7, the front end of parking cam 6 is arranged in groove 921, and fix with latch 93, thus in case of emergency can artificially touch latch 93, latch 93 is separated with parking cam 6, simultaneously under the effect of the first spring 5, parking cam 6 can be separated with parking arm 7, and then makes automobile unlock successfully, is in non-parked state.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an electronic parking control method, is characterized in that, comprising:
When step 1, electronic parking controller obtain and store parking success, parking arm is in the threshold value of end position;
Step 2, described electronic parking controller obtain the real-time position information of described parking arm and the gear information of automobile shifting rod, and control described automobile and enter or remove parked state.
2. electronic parking control method according to claim 1, is characterized in that, described step 1 specifically comprises:
Step 11, described electronic parking controller control drive motor work, and described drive motor drives parking cam to move to parking arm;
Step 12, described parking cam compress described parking arm and move downward, the movement position of parking arm described in position transduser Real-Time Monitoring;
Step 13, described parking arm move to end position, described parking cam and parking arm locked, make described drive motor stall; Meanwhile, the end position information of described parking arm is sent to described electronic parking controller by described position transduser;
Step 14, described electronic parking controller control described drive motor and quit work, and make described automobile enter parked state; Described electronic parking controller stores described end position information.
3. electronic parking control method according to claim 2, is characterized in that, also comprises before described step 11:
Step 111, automobile power on, and make described electronic parking controller in running order;
The described gear level of step 112, manipulation automatic transmission with hydraulic torque converter is in parking shift.
4. electronic parking control method according to claim 2, is characterized in that, described step 13 specifically comprises:
Step 131, described parking arm move to described end position, described parking cam and parking arm locked, make described drive motor stall;
Step 132, described position transduser convert the end position information of described parking arm to first information of voltage;
Described first information of voltage is sent to described electronic parking controller by step 133, described position transduser.
5. electronic parking control method according to claim 4, is characterized in that, described step 14 specifically comprises:
Step 141, described electronic parking controller control described drive motor and quit work, and make described automobile enter parked state;
Step 142, described electronic parking controller receive and store described first information of voltage, and described first information of voltage is for judging the successful threshold value of follow-up described automobile parking.
6. electronic parking control method according to claim 1 and 2, is characterized in that, described threshold value is the aviation value of described parking arm when end position that test of many times obtains.
7. electronic parking control method according to claim 5, is characterized in that, described step 2 specifically comprises:
Step 21, automobile power on, and make described electronic parking controller in running order;
Step 22, described position transduser monitor the location information of described parking arm, and described location information are converted to the second information of voltage and send to described electronic parking controller;
Described second information of voltage and described first information of voltage compare by step 23, described electronic parking controller, judge whether described automobile is in parked state;
Step 24, when described second information of voltage is equal with described first information of voltage, described electronic parking controller judges that described automobile is in parked state;
When step 25, described electronic parking controller judge that described gear level is in driving gear, described electronic parking controller controls described drive motor and rotates, and drives described parking cam and described parking arm to depart from, and makes described automobile remove parked state.
8. electronic parking control method according to claim 7, is characterized in that, specifically also comprises after described step 25:
Step 31, described electronic parking controller judge the gear information of described gear level; The displacement information of parking arm described in described position transduser Real-Time Monitoring, and generate tertiary voltage information;
Described tertiary voltage information is sent to described electronic parking controller by step 32, described position transduser;
Step 33, described electronic parking controller judge that described gear level is in parking shift, when described electronic parking controller judges that described tertiary voltage information is equal with described first information of voltage, described electronic parking controller controls described drive motor and quits work, complete the locked of described parking cam and parking arm, make described automobile enter parked state.
9. electronic parking control method according to claim 8, is characterized in that, also comprises after described step 33:
Under step 34, automobile, electricity, makes described automotive be held in parked state.
10. an electronic parking control system, is characterized in that, comprises electronic parking controller and electronic parking actuating unit; Described electronic parking controller can be used in the gear information obtaining automobile shifting rod;
Described electronic parking actuating unit comprises the drive motor be connected with described electronic parking controller, the output shaft of described drive motor is connected with parking cam, and described drive motor drives described parking cam axial motion; The parking arm of described electronic parking actuating unit is provided with position transduser, and described position transduser is connected with described electronic parking controller, for the location information of parking arm described in Real-Time Monitoring;
When described parking cam compresses described parking arm to end position, described position transduser monitors described parking arm in the threshold value of end position and location information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410690373.6A CN104442749A (en) | 2014-11-25 | 2014-11-25 | Electronic parking brake control method and system adopting same |
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| CN201410690373.6A CN104442749A (en) | 2014-11-25 | 2014-11-25 | Electronic parking brake control method and system adopting same |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106195258A (en) * | 2016-07-15 | 2016-12-07 | 深圳比亚迪戴姆勒新技术有限公司 | The locking method of a kind of park position and system |
| CN109080600A (en) * | 2018-07-19 | 2018-12-25 | 奇瑞汽车股份有限公司 | The error self-learning method and device of brake-pedal-travel sensor |
| CN110920589A (en) * | 2019-12-03 | 2020-03-27 | 株洲齿轮有限责任公司 | Electronic parking gear self-learning method, electronic parking method, controller and vehicle |
| CN111271446A (en) * | 2018-12-04 | 2020-06-12 | 广州汽车集团股份有限公司 | Parking mechanism position calibration method and device and automobile |
| CN111412280A (en) * | 2020-03-27 | 2020-07-14 | 广州小鹏汽车科技有限公司 | Electric automobile and P gear control method thereof |
| CN112682504A (en) * | 2020-12-31 | 2021-04-20 | 蜂巢传动科技河北有限公司 | Gear position identification method, device and system and automobile |
| CN113759878A (en) * | 2021-09-26 | 2021-12-07 | 重庆美沣秦安汽车驱动系统有限公司 | Control system, method and terminal for combined action of P-gear actuator and motor |
| CN114110161A (en) * | 2020-08-28 | 2022-03-01 | 上海汽车变速器有限公司 | Electronic parking limit angle self-learning method |
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| CN106195258A (en) * | 2016-07-15 | 2016-12-07 | 深圳比亚迪戴姆勒新技术有限公司 | The locking method of a kind of park position and system |
| CN106195258B (en) * | 2016-07-15 | 2020-09-08 | 深圳腾势新能源汽车有限公司 | Locking method and system for parking gear |
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| CN111412280A (en) * | 2020-03-27 | 2020-07-14 | 广州小鹏汽车科技有限公司 | Electric automobile and P gear control method thereof |
| CN114110161A (en) * | 2020-08-28 | 2022-03-01 | 上海汽车变速器有限公司 | Electronic parking limit angle self-learning method |
| CN114110161B (en) * | 2020-08-28 | 2023-09-26 | 上海汽车变速器有限公司 | Electronic parking limit angle self-learning method |
| CN112682504A (en) * | 2020-12-31 | 2021-04-20 | 蜂巢传动科技河北有限公司 | Gear position identification method, device and system and automobile |
| CN113759878A (en) * | 2021-09-26 | 2021-12-07 | 重庆美沣秦安汽车驱动系统有限公司 | Control system, method and terminal for combined action of P-gear actuator and motor |
| CN113759878B (en) * | 2021-09-26 | 2023-08-29 | 重庆美沣秦安汽车驱动系统有限公司 | Control system, method and terminal for joint action of P-gear actuator and motor |
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Application publication date: 20150325 |