CN102795210B - Electronic parking system and starting control method of stick-shift car - Google Patents
Electronic parking system and starting control method of stick-shift car Download PDFInfo
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- CN102795210B CN102795210B CN201210289943.1A CN201210289943A CN102795210B CN 102795210 B CN102795210 B CN 102795210B CN 201210289943 A CN201210289943 A CN 201210289943A CN 102795210 B CN102795210 B CN 102795210B
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Abstract
The invention relates to an electronic parking system and a starting control method of a stick-shift car. An engine rotation speed sensor, a forward gear position switch, a rearward gear position switch and a throttle position sensor are connected with a signal receiving module; the single receiving module is connected with a left rear wheel parking actuating mechanism and a right rear wheel parking actuating mechanism after passing through a signal processing module and a motor drive module in sequence; and braking mode switches connected with the signal receiving module are mounted on the clamp spring sheets of the left rear wheel parking actuating mechanism and the right rear wheel parking actuating mechanism. The starting control method comprises the steps as follows: initializing the system; detecting the actual rotation speed of an engine; detecting if a gear is engaged; detecting the throttle position; detecting if the braking mode switches are conducted; and releasing the electronic parking state. According to the electronic parking system, the elements such as a clutch position sensor, a slope sensor and the like are cancelled, so that the cost is reduced and the control precision of a clutch friction plate is improved after being worn. The starting control method is simple and practical, and the starting condition can be easily judged without complicated operation and mass data acquisition.
Description
Technical field
The present invention relates to a kind of electronic parking system and starting control method thereof, especially relate to a kind of manual gear vehicle electric parking system and starting control method thereof.
Background technology
At present, most electronic parking systems all have start assisting function, automatically terminate parking braking function, electronic parking system is the intention of identification of driver and the state of vehicle automatically, when meeting when starting requires, vehicle can automatically terminate braking during standstill, thus the flame-out phenomenons such as slope of slipping while forgetting loose parking, manual car uphill starting while avoiding appearance driving.In existing electronic parking system, the basic skills that realizes about start assisting function is: judge whether the tractive force of vehicle is greater than the resistance of vehicle, and in this process, need the signal gathering to have: the parameters such as throttle position signal, engine output torque signal, clutch position signal, vehicle gradient signal of living in, first system is according to throttle opening and engine speed, obtain the output torque of driving engine, again according to the combination degree of power-transfer clutch, calculate the transmitting torque of power-transfer clutch, draw ground propulsive effort; The resistance that calculates again vehicle start according to whole-car parameters and the residing gradient of vehicle, in the time that propulsive effort is greater than the breakaway force of vehicle, system is just removed braking during standstill, so vehicle is just able to gentle start.But it is many that the method has incoming signal, control policy complexity, cost are high, the shortcoming such as control accuracy reduction after clutch friction pad wear.
Summary of the invention
The deficiency existing in order to overcome existing manual gear vehicle start, the object of the present invention is to provide a kind of manual gear vehicle electric parking system and starting control method thereof.
The present invention is by the following technical solutions:
One, a kind of manual gear vehicle electric parking system:
The present invention includes signal gathering unit, electronic control unit and parking performance element; Signal gathering unit comprises engine speed sensor, forward gear position switch, position switch and engine load sensor reverse gear; Electronic control unit comprises signal receiving module, signal processing module and motor drive module; Parking performance element comprises left rear wheel parking actuating unit and the off hind wheel parking actuating unit that structure is identical; Engine speed sensor, forward gear position switch, the position switch that reverses gear in signal gathering unit are connected with the signal receiving module in electronic control unit respectively with engine load sensor; Signal receiving module is connected with motor drive module through signal processing module, and motor drive module is connected with left rear wheel parking actuating unit and off hind wheel parking actuating unit in parking performance element respectively.A braking mode switch identical with structure is respectively housed in off hind wheel parking actuating unit at described left rear wheel parking actuating unit, when braking mode switch is all positioned at vehicle rollback brake, support and rear clamp friction shoe produce a side of extruding, and be all fixedly mounted near in Clip Reed one side of support, two braking mode switches are all connected with signal receiving module.
Described braking mode switch comprises insulation film and two arrays of electrodes, and insulation film is bonded in Clip Reed surface, and two arrays of electrodes is fixed on insulation film surface and not conducting mutually, and two arrays of electrodes is connected with described signal receiving module respectively.
During when vehicles failed parking or in level road parking, described braking mode switch does not contact with support, and braking mode switch is for disconnecting; When vehicle is during in ramp parking, braking mode switch contacts with support, and braking mode switch is conducting.
Described two arrays of electrodes is all W shape, and the W shape of two arrays of electrodes is intersected and not conducting mutually mutually.
Two, a kind of starting control method of manual gear vehicle electric parking system:
1) system initialization carry out self check;
2) by engine speed sensor, actual engine speed n is detected:
If actual engine speed n is less than the engine speed ni of default, system wait, does not carry out any action;
If actual engine speed n is more than or equal to the engine speed ni of default, carry out step 3);
3) detect whether putting into gear by forward gear position switch and the position switch that reverses gear:
If do not put into gear, system wait, does not carry out any action;
If put into forward gear, carry out step 4);
If hung into reversing gear, carry out step 4);
4) by engine load sensor, throttle opening is detected:
If throttle opening is less than or equal to idling aperture, system is returned to wait, gets back to step 2);
If throttle opening is greater than idling aperture, carry out step 5);
5) to being arranged on braking mode switch between rear clamp friction shoe and support, whether conducting detects:
Putting into forward gear in situation, if braking mode switch conduction, system is returned to wait, gets back to step 2);
Putting into forward gear in situation, if braking mode switch disconnects, carrying out step 6);
Hang in the situation of reversing gear, if braking mode switch disconnects, system is returned to wait, gets back to step 2);
Hang in the situation of reversing gear, if braking mode switch conduction carries out step 6);
6) remove electronic parking by the motor reversal in left rear wheel parking actuating unit and off hind wheel parking actuating unit.
The beneficial effect having of the present invention is:
The present invention has cancelled the elements such as clutch position sensor, Slope Transducer, reduce cost, compare with existing control method, improve control accuracy after clutch friction pad wear, the inventive method is simple and practical, while judging starting condition, do not need complex calculations and a large amount of data acquisitions, only need simple judgement just can realize.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present invention.
Fig. 2 is that caliper is at wheel position figure.
Fig. 3 is the partial enlarged drawing of the A of Fig. 2 while being in braking mode switch in vehicles failed parking or in level road parking.
Fig. 4 be the A of Fig. 2 be in braking mode switch at vehicle the partial enlarged drawing during in ramp parking.
Fig. 5 is braking mode switch junctions composition.
Fig. 6 is the inventive method FB(flow block).
In figure: 10, signal gathering unit, 11, engine speed sensor, 12, forward gear position switch, 13, position switch reverses gear, 14, engine load sensor, 15, braking mode switch, 20, electronic control unit, 21, signal receiving module, 22, signal processing module, 23, motor drive module, 30, parking performance element, 31, left rear wheel parking actuating unit, 32, caliper, 33, off hind wheel parking actuating unit, 41, insulation film, 42, electrode, 43, wire, 51, rear clamp friction shoe, 52, brake disc, 53, support, 55, Clip Reed.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, system of the present invention comprises signal gathering unit 10, electronic control unit 20 and parking performance element 30; Signal gathering unit 10 comprises engine speed sensor 11, forward gear position switch 12, position switch 13 and engine load sensor 14 reverse gear; Electronic control unit 20 comprises signal receiving module 21, signal processing module 22 and motor drive module 23; Parking performance element 30 comprises left rear wheel parking actuating unit 31 and the off hind wheel parking actuating unit 33 that structure is identical; Engine speed sensor 11, forward gear position switch 12, the position switch 13 that reverses gear in signal gathering unit 10 are connected with the signal receiving module 21 in electronic control unit 20 respectively with engine load sensor 14; Signal receiving module 21 is connected with motor drive module 23 through signal processing module 22, and motor drive module 23 is connected with left rear wheel parking actuating unit 31 and off hind wheel parking actuating unit 33 in parking performance element 30 respectively; As shown in Figure 2, a braking mode switch 15 identical with structure is respectively housed in off hind wheel parking actuating unit 33 at described left rear wheel parking actuating unit 31, when braking mode switch 15 is all positioned at vehicle rollback brake, support 53 produces a side of extruding with rear clamp friction shoe 51, and be all fixedly mounted near in Clip Reed 55 1 sides of support 53, two braking mode switches 15 are all connected with signal receiving module 21.
During when vehicles failed parking or in level road parking, braking mode switch 15 does not contact with support 53, and braking mode switch 15 is for disconnecting; When vehicle is during in ramp parking, braking mode switch 15 contacts with support 53, and braking mode switch 15 is conducting.
Described two arrays of electrodes 42 is all W shape, and the W shape of two arrays of electrodes is intersected and not conducting mutually mutually.
In left and right trailing wheel parking actuating unit 31,33, support 53 is the support at caliper 32 places.Clip Reed 55 is between support 53 and rear clamp friction shoe 51.
System of the present invention gathers engine rotational speed signal, vehicle shift signal, throttle opening signal and braking mode on-off signal etc. by signal gathering unit 10, comprehensively judged by electronic control unit 20, then control parking performance element 30 and carry out releasing parking action.
There is two states the position of caliper 32 on wheel, be divided into caliper 32 at wheel rear portion and caliper 32 in wheel front portion, if caliper is loaded on wheel rear portion, after in the time of upward slope parking, clamp friction shoe 51 lower ends and support 53 produce extruding, after when descending parking, clamp friction shoe 51 upper ends and support 53 produce extruding, if caliper is loaded on before wheel, in the time of upward slope parking after clamp friction shoe 51 upper ends and support 53 produce extruding, when descending parking after clamp friction shoe 51 lower ends and support 53 produce extruding.The mounting means of most vehicle caliper is that caliper is positioned at after wheel, here just describe as an example of Fig. 2 example, 52 is brake disc, rear clamp friction shoe 51 terminations and support 53 are installed on brake disc 52, in the time that being about to starting, vehicle rolls because wheel produces, the extruding meeting of rear clamp friction shoe 51 and support turns to the other end from one end, if braking mode switch 15 is installed between rear clamp friction shoe 51 terminations and support 53, just can judge by detecting the on off mode of braking mode switch 15 stressing conditions of rear clamp friction shoe 51 and support 53, thereby judge the movement tendency of vehicle.Consider after vehicle high-speed when braking that wherein one end and support 53 impact very large clamp friction shoe 51, number of times is also more frequent, excessive pressure adds action frequently can cause 15 fatigue damages of braking mode switch, and the other end only just has impact in the time that vehicle backing is braked, pressure is little, number of times is also less, backgear ratio front wheel brake power is little in addition, so support 53 produces a side of extruding with rear clamp friction shoe 51 when the optimal installation site of braking mode switch 15 is the brake of trailing wheel vehicle rollback.As can be seen here, if vehicle in parking on up gradient, braking mode switch 15 will be always in conducting state, if contrary vehicle is at level road or to parking on down ramp, braking mode switch 15 will be always in off-state.
Fig. 3 is the constitution diagram of braking mode switch during in vehicles failed parking or in level road parking, is the partial enlarged drawing at A place in Fig. 2.There is certain gap in Clip Reed 55 and support 53 detent surface, because braking mode switch 15 is fixed in Clip Reed 55 1 sides and thickness is less than gap width, now the electrode on braking mode switch 15 surfaces fails to contact support 53, and braking mode switch 15 shows as disconnection.Fig. 4 constitution diagram during in ramp parking that is braking mode switch at vehicle is the partial enlarged drawing at A place in Fig. 2.Clip Reed 55 is deformation in compression under the effect of rear clamp friction shoe 51 pressure F, and braking mode switch 15 is pressed to support 53 surfaces by Clip Reed 55, and braking mode switch 15 contacts with support 53, and braking mode switch 15 is just in conducting state.
Fig. 5 is braking mode switch junctions composition, 41 is insulation film, 42 for being fixed on the electrode on insulation film surface, electrode 42 is divided into two groups, not conducting mutually, 43 is the wire of connecting electrode and signal receiving module, braking mode switch 15 entirety are bonded in Clip Reed 55 surfaces, during when vehicles failed parking or in level road parking, owing to there is gap in Clip Reed 55 and support 53 detent surface, braking mode switch 15 support 53 of getting along well contacts, and two arrays of electrodes 42 mutually can not conducting, and braking mode switch 15 shows as disconnection.Vehicle is in the time of the parking of ramp, Clip Reed 55 is deformation in compression under the effect of rear clamp friction shoe 51 pressure F, braking mode switch 15 is pressed to support 53 surfaces by Clip Reed 55, braking mode switch 15 contacts with support 53, because support 53 is conductor, in two arrays of electrodes 42, two electrodes of arbitrary neighborhood contact with support 53, will make electrode 42 switch on, and braking mode switch 15 shows as conducting.
The inventive method step is as follows:
1) system initialization carry out self check;
2) by engine speed sensor 11, actual engine speed n is detected:
If actual engine speed n is less than the engine speed ni of default, system wait, does not carry out any action;
If actual engine speed n is more than or equal to the engine speed ni of default, carry out step 3);
3) detect whether putting into gear by forward gear position switch 12 and the position switch 13 that reverses gear:
If do not put into gear, system wait, does not carry out any action;
If put into forward gear, carry out step 4);
If hung into reversing gear, carry out step 4);
4) by engine load sensor 14, throttle opening is detected:
If throttle opening is less than or equal to idling aperture, system is returned to wait, gets back to step 2);
If throttle opening is greater than idling aperture, carry out step 5);
5) to being arranged on braking mode switch 15 between rear clamp friction shoe 51 and support 53, whether conducting detects:
Putting into forward gear in situation, if 15 conductings of braking mode switch, system is returned to wait, gets back to step 2);
Putting into forward gear in situation, if braking mode switch 15 disconnects, carrying out step 6);
Hang in the situation of reversing gear, if braking mode switch 15 disconnects, system is returned to wait, gets back to step 2);
Hang in the situation of reversing gear, if step 6) is carried out in 15 conductings of braking mode switch;
6) remove electronic parking by left rear wheel parking actuating unit 31 and the motor reversal in off hind wheel parking actuating unit 33.
When starting, require actual engine speed n to be not less than the engine speed ni of default, engine speed ni can be driving engine minimum operation rotating speed, object is for preventing that vehicle is in the not steadily state starting of (as flame-out in being about to) of driving engine operation, prevents in addition vehicle unexpected electronic parking of removing under fired state not.
So removing electronic parking must meet the following conditions:
1, actual engine speed n is not less than the engine speed ni of default;
2, throttle opening is greater than idling aperture;
3, the signal of forward gear switch or reverse gear switch and braking mode switch meets table 1 and requires:
Table 1
Describe the embodiment of the inventive method in detail below in conjunction with Fig. 6:
A) while hanging forward gear starting:
When vehicle parked during in ramp upwards, if chaufeur has the intention of starting forward, according to the flow process shown in Fig. 6, first system detects whether actual engine speed n is less than setting value ni, if be less than, system is returned to wait, in the time that system detects that actual engine speed n is more than or equal to setting value ni, proceed to next flow process, system detects and whether puts into gear, if do not put into gear, system is returned to wait, when system detects while putting into forward gear, system enters Fig. 6 left side flow process, then whether system detection throttle opening is greater than idling aperture, if be not greater than idling, system is returned to wait, in the time that throttle opening is greater than idling, system proceeds to next flow process, then be to detect braking mode switch 15, if braking mode switch 15 conductings, system is returned to wait, in the time that system detects that braking mode switch 15 disconnects, system proceeds to next flow process, remove electronic parking, so vehicle is able to gentle start.
When vehicle parked on level road time, if chaufeur has the intention of starting forward, according to the flow process shown in Fig. 6, first system detects whether actual engine speed n is less than setting value ni, if be less than, system is returned to wait, in the time that system detects that actual engine speed n is more than or equal to setting value ni, proceed to next flow process, system detects and whether puts into gear, if do not put into gear, system is returned to wait, when system detects while putting into forward gear, system enters Fig. 6 left side flow process, then whether system detection throttle opening is greater than idling aperture, if be not greater than idling, system is returned to wait, in the time that throttle opening is greater than idling, system proceeds to next flow process, then be to detect braking mode switch 15, because vehicle is when the level road parking, braking mode switch 15 is always in off-state, so system directly proceeds to next flow process, discharge electronic parking, so vehicle is able to gentle start.
When vehicle parked in downward ramp and while starting to walk forward, because braking mode switch 15 signals are also always in off-state, so control method, system flow peace route starting are consistent, no longer repeat specification here.
B) hang while reversing gear starting:
When vehicle parked during in downward ramp, if chaufeur has the intention of starting backward, according to the flow process shown in Fig. 6, first system detects whether actual engine speed n is less than setting value ni, if be less than, system is returned to wait, in the time that system detects that actual engine speed n is more than or equal to setting value ni, proceed to next flow process, system detects and whether puts into gear, if do not put into gear, system is returned to wait, when detecting, system hangs when reversing gear, system enters Fig. 6 the right flow process, then whether system detection throttle opening is greater than idling aperture, if be not greater than idling, system is returned to wait, in the time that throttle opening is greater than idling, system proceeds to next flow process, then be to detect braking mode switch 15, if braking mode switch 15 disconnects, system is returned to wait, in the time that system detects 15 conducting of braking mode switch, system proceeds to next flow process, discharge electronic parking, so vehicle is able to gentle start.
When vehicle parked during in ramp upwards, if chaufeur has the intention of starting backward, according to the flow process shown in Fig. 6, first system detects whether actual engine speed n is less than setting value ni, if be less than, system is returned to wait, in the time that system detects that actual engine speed n is more than or equal to setting value ni, proceed to next flow process, system detects and whether puts into gear, if do not put into gear, system is returned to wait, when detecting, system hangs when reversing gear, system enters Fig. 6 the right flow process, then whether system detection throttle opening is greater than idling aperture, if be not greater than idling, system is returned to wait, in the time that throttle opening is greater than idling, system proceeds to next flow process, then be to detect braking mode switch 15, because vehicle is when the ramp parking upwards, braking mode switch 15 is always in conducting state, so system directly proceeds to next flow process, discharge electronic parking, so vehicle is able to gentle start.
When vehicle parked at level road and while starting to walk backward, control method, system flow and to be anchored in downhill path consistent towards rear starting, also no longer repeat specification here.
The above-mentioned specific embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change that the present invention is made, all fall into protection scope of the present invention.
Claims (5)
1. a manual gear vehicle electric parking system, comprises signal gathering unit (10), electronic control unit (20) and parking performance element (30), signal gathering unit (10) comprises engine speed sensor (11), forward gear position switch (12), the position switch that reverses gear (13) and engine load sensor (14), electronic control unit (20) comprises signal receiving module (21), signal processing module (22) and motor drive module (23), parking performance element (30) comprises left rear wheel parking actuating unit (31) and the off hind wheel parking actuating unit (33) that structure is identical, engine speed sensor (11), forward gear position switch (12), the position switch that reverses gear (13) and engine load sensor (14) in signal gathering unit (10) is connected with the signal receiving module (21) in electronic control unit (20) respectively, signal receiving module (21) is connected with motor drive module (23) through signal processing module (22), motor drive module (23) is connected with left rear wheel parking actuating unit (31) and off hind wheel parking actuating unit (33) in parking performance element (30) respectively, it is characterized in that: a braking mode switch (15) identical with structure is respectively housed in off hind wheel parking actuating unit (33) at described left rear wheel parking actuating unit (31), when braking mode switch (15) is all positioned at vehicle rollback brake, support (53) produces a side of extruding with rear clamp friction shoe (51), and be all fixedly mounted near in Clip Reed (55) one sides of support (53), two braking mode switches (15) are all connected with signal receiving module (21).
2. a kind of manual gear vehicle electric parking system according to claim 1, it is characterized in that: described braking mode switch (15) comprises insulation film (41) and two arrays of electrodes (42), insulation film (41) is bonded in Clip Reed (55) surface near support (53), two arrays of electrodes (42) is fixed on insulation film (41) surface and not conducting mutually, and two arrays of electrodes (42) is connected with described signal receiving module (21) respectively.
3. a kind of manual gear vehicle electric parking system according to claim 2, is characterized in that: during when vehicles failed parking or in level road parking, described braking mode switch (15) does not contact with support (53), and braking mode switch (15) is for disconnecting; When vehicle is during in ramp parking, braking mode switch (15) contacts with support (53), and braking mode switch (15) is conducting.
4. a kind of manual gear vehicle electric parking system according to claim 2, is characterized in that: described two arrays of electrodes (42) is all W shape, and the W shape of two arrays of electrodes is intersected and not conducting mutually mutually.
5. a starting control method of utilizing the manual gear vehicle electric parking system described in claim 1, is characterized in that comprising the following steps:
1) system initialization carry out self check;
2) by engine speed sensor (11), actual engine speed n is detected:
If actual engine speed n is less than the engine speed ni of default, system wait, does not carry out any action;
If actual engine speed n is more than or equal to the engine speed ni of default, carry out step 3);
3) detect whether putting into gear by forward gear position switch (12) and the position switch that reverses gear (13):
If do not put into gear, system wait, does not carry out any action;
If put into forward gear, carry out step 4);
If hung into reversing gear, carry out step 4);
4) by engine load sensor (14), throttle opening is detected:
If throttle opening is less than or equal to idling aperture, system is returned to wait, gets back to step 2);
If throttle opening is greater than idling aperture, carry out step 5);
5) to being arranged on braking mode switch (15) between rear clamp friction shoe (51) and support (53), whether conducting detects:
Putting into forward gear in situation, if braking mode switch (15) conducting, system is returned to wait, gets back to step 2);
Putting into forward gear in situation, if braking mode switch (15) disconnects, carrying out step 6);
Hang in the situation of reversing gear, if braking mode switch (15) disconnects, system is returned to wait, gets back to step 2);
Hang in the situation of reversing gear, if step 6) is carried out in braking mode switch (15) conducting;
6) remove electronic parking by left rear wheel parking actuating unit (31) and the motor reversal in off hind wheel parking actuating unit (33).
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| CN201210289943.1A CN102795210B (en) | 2012-08-15 | 2012-08-15 | Electronic parking system and starting control method of stick-shift car |
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| JP6410038B2 (en) * | 2014-12-04 | 2018-10-24 | 三菱自動車工業株式会社 | Electric parking brake device |
| CN106335486A (en) * | 2016-09-14 | 2017-01-18 | 成都雅骏新能源汽车科技股份有限公司 | Gear-shifting parking system for pure-electric delivery vehicle with parking function |
| CN110182190B (en) * | 2018-02-22 | 2022-08-05 | 罗伯特·博世有限公司 | Method, device and control unit for parking brake release |
| CN108583563B (en) * | 2018-04-04 | 2019-11-12 | 杭叉集团股份有限公司 | Diesel fork lift truck parking safety control method |
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| US20060148618A1 (en) * | 2005-01-04 | 2006-07-06 | Tsao-Hui Huang | Vehicle stop-and-brake system |
| CN200945861Y (en) * | 2005-08-09 | 2007-09-12 | 杨铭域 | Carriage safe full-automatic parking brake system |
| CN101205970B (en) * | 2006-12-22 | 2011-03-30 | 比亚迪股份有限公司 | Control device and method for AMT vehicle sloping starting |
| CN101537831B (en) * | 2009-04-13 | 2012-10-03 | 浙江亚太机电股份有限公司 | Control method of automobile electric control parking and start assisting by manual transmission and system thereof |
| CN202716745U (en) * | 2012-08-15 | 2013-02-06 | 浙江亚太机电股份有限公司 | Manual transmission vehicle electronic parking brake system |
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