CN106828195B - A kind of lightweight electric powered vehicles brake control method and system - Google Patents
A kind of lightweight electric powered vehicles brake control method and system Download PDFInfo
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- CN106828195B CN106828195B CN201710113685.4A CN201710113685A CN106828195B CN 106828195 B CN106828195 B CN 106828195B CN 201710113685 A CN201710113685 A CN 201710113685A CN 106828195 B CN106828195 B CN 106828195B
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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
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/12—Speed
-
- 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
- B60L2250/00—Driver interactions
- B60L2250/26—Driver interactions by pedal actuation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention discloses a kind of lightweight electric powered vehicles brake control methods, including：Obtain vehicle current speed and accelerator pedal aperture；Judge whether speed is more than preset throttle brake speed, if it is, judging whether accelerator pedal aperture is more than preset throttle brake aperture, if it is, then detect accelerator pedal lift signal after, obtain the acceleration that lifts of accelerator pedal, and execute next step；Judge acceleration whether be more than accelerator pedal all one's effort lift the 80% of acceleration, if it is, pre- brake signal then is sent to the electrical braking device of vehicle, pre- brake signal includes that electrical braking device controls electric machine controller to the anti-power transmission of electric notor, is braked to control electric notor.Pre- brake operating provided by the present invention can be prior to the brake operating of brake pedal, additionally it is possible to avoid receiving driver the erroneous judgement of oil operation, the invention also discloses a kind of lightweight electric powered vehicles braking control systems for realizing the above method.
Description
Technical field
The present invention relates to technical field of vehicle control, more specifically to a kind of lightweight electric powered vehicles control for brake side
Method.Moreover, it relates to a kind of system for realizing above-mentioned lightweight electric powered vehicles brake control method.
Background technology
The braking system of vehicle is one of important control system of vehicle, and the development of vehicle control braking technology determines
The technical merit of vehicle.
The braking system of vehicle in the prior art includes skidding, hand brake etc., in conventional situation, works as driver
An emergency situation is encountered, usually rapidly loosens the right crus of diaphragm stepped down on throttle, recycling while shifting to brake pedal, and by brake pedal
Step on, after brake pedal is stepped on, speed can just reduce, and speed keeps original speed substantially in the process, and therebetween when
Even if there is no form braking between, that is to say, that brake operating can not be found to make in time when emergency by driver anti-
It answers, there are the possibility of operational delays, and great threat is caused to the driving safety of vehicle.
It is that current those skilled in the art are urgently to be resolved hurrily in conclusion how to provide a kind of braking method accurately and timely
The problem of.
Invention content
In view of this, the object of the present invention is to provide a kind of lightweight electric powered vehicles brake control method, the control for brake side
Method can be promptly and accurately make brake response, avoid vehicle from driving safety accident occur.
It is a further object of the present invention to provide a kind of systems for realizing above-mentioned lightweight electric powered vehicles brake control method.
To achieve the goals above, the present invention provides the following technical solutions：
A kind of lightweight electric powered vehicles brake control method, including：
Obtain vehicle current speed and accelerator pedal aperture；
Judge whether the speed is more than preset throttle brake speed, if it is not, then it is current to return to acquisition vehicle
Speed and the step of accelerator pedal aperture, if it is, judging whether the accelerator pedal aperture is more than preset oil
Door braking aperture；If the accelerator pedal aperture is more than preset throttle brake aperture, accelerator pedal is detected
After lifting signal, the acceleration that accelerator pedal lifts is obtained, and execute next step；
Judge the acceleration whether be more than the accelerator pedal all one's effort lift the 80% of acceleration, if it is, to
The electrical braking device of vehicle sends pre- brake signal, and the pre- brake signal includes the electrical braking device control motor control
Device processed is braked to the anti-power transmission of electric notor with controlling the electric notor.
Preferably, before the pre- brake signal to the transmission of vehicle electric brake apparatus, including：
The deceleration desired value of vehicle braking is obtained according to the size of the acceleration, and according to the deceleration desired value
Determine that corresponding brake pressure, the deceleration desired value are proportionate with the brake pressure, the brake pressure be for
It is sent to the pre- brake signal of the electrical braking device；The electrical braking device is according to the braking pressure control pair
The electric notor applies reversed electricity.
Preferably, the deceleration desired value and the brake pressure are proportional.
Preferably, before the pre- brake signal to the transmission of the electrical braking device of vehicle, further include：
The state for detecting vehicle steering device, judges whether vehicle is in steering state, works as front steering if it is, obtaining
Angle, and the brake pressure is determined according to the steering angle, the size of the brake pressure and the steering angle is in inverse ratio.
Preferably, after the pre- brake signal to the transmission of vehicle electric brake apparatus, further include：
Whether the aperture for detecting brake pedal is in enlarging state, if it is, obtaining the current system of the brake pedal
Dynamic aperture obtains corresponding current brake pressure according to the current brake aperture, is worked as according to the current brake pressure
Preceding braking acceleration, judges whether current brake acceleration is more than currently practical braking acceleration；If it is, to described electronic
Brake apparatus sends the ring off signal for releasing the pre- brake signal, and controls the electric controller and stepped on according to the braking
The current brake acceleration of plate is braked；If it is not, then controlling the electric controller still according to the pre- braking
Signal is braked；
Meanwhile whether the aperture for detecting the accelerator pedal is in enlarging state, if it is, being filled to the electrodynamic braking
It sets transmission and releases brake signal.
Preferably, while the transmission pre- brake signal to the electrical braking device of vehicle, the current speed of vehicle is detected
Degree sends brake signal when the present speed is more than preset vehicle speed critical value to the electric brake auxiliary system of vehicle.
A kind of lightweight electric powered vehicles braking control system, including：
State acquisition device, for obtaining the current speed of vehicle and accelerator pedal aperture；
The default judgment means being connect with the state acquisition device, prestore throttle brake speed and throttle brake is opened
Degree judges whether the accelerator pedal aperture is more than described for judging whether the speed is more than the throttle brake speed
Throttle brake aperture sends execution signal and gives acceleration acquisition device if being to be；
Acceleration acquisition device, for after getting the execution signal detection accelerator pedal lift signal, and obtain
The acceleration for taking the accelerator pedal to lift；
The brake control being connect with the acceleration acquisition device is stepped on for working as the acceleration more than the acceleration
When all one's effort of plate lifts the 80% of acceleration, pre- brake signal, the pre- brake signal are sent to the electrical braking device of vehicle
Electric machine controller is controlled to the anti-power transmission of electric notor including the electrical braking device, is braked with controlling the electric notor.
Preferably, the brake control includes braking target value coalignment, the braking target value coalignment
Deceleration desired value for obtaining vehicle braking according to the size of the acceleration, and determined according to the deceleration desired value
Corresponding brake pressure, the deceleration desired value are proportionate with the brake pressure.
Preferably, further include：
Brake pedal detection control apparatus, after sending pre- brake signal in brake control, detection braking is stepped on
The current brake aperture of plate obtains current brake acceleration according to the current brake aperture, judges that current brake acceleration is
It is no to be more than currently practical braking acceleration；The pre- brake signal is released if it is, being sent to the electrical braking device
Ring off signal, and control the electric controller and braked according to the current brake acceleration of the brake pedal；
It is braked still according to the pre- brake signal if it is not, then controlling the electric controller；
Whether accelerator pedal detection control apparatus, the aperture for detecting the accelerator pedal are in enlarging state, if
It is then to be sent to the electrical braking device and release brake signal.
Preferably, further include the steering angle detection control apparatus being connect with the transfer of vehicle, steering angle detection control
Device determines the brake pressure for obtaining current steering angle, and according to the steering angle, the brake pressure with described turn
It is in inverse ratio to the size at angle.
Lightweight electric powered vehicles brake control method provided by the present invention carries out the vehicle in high speed acceleration mode
Monitoring, when monitoring rapidly to receive oil, judges that vehicle enters the state of emergency, passes through sentencing for the acceleration that is withdrawn to accelerator pedal
Disconnected, control vehicle carries out brake operating.Pre- brake operating provided by the present invention can prior to the brake operating of brake pedal, by
In using the judgement for withdrawing acceleration to accelerator pedal, the erroneous judgement for receiving oil operation to driver is avoided, prevents from actually making
The abuse braked in advance in, the operation that can reasonably parse driver are intended to, and the ride comfort of vehicle is made to be improved.
The present invention also provides a kind of lightweight electric powered vehicles for realizing above-mentioned lightweight electric powered vehicles brake control method
Braking control system.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow chart of the specific embodiment one of lightweight electric powered vehicles brake control method provided by the present invention；
Fig. 2 is a kind of flow chart of the specific embodiment two of lightweight electric powered vehicles brake control method provided by the present invention；
Fig. 3 is a kind of flow chart of the specific embodiment three of lightweight electric powered vehicles brake control method provided by the present invention；
Fig. 4 is a kind of system signal of specific embodiment of lightweight electric powered vehicles braking control system provided by the present invention
Figure.
In figure 1 above -4：
1 it is state acquisition device, 2 be default judgment means, 3 be acceleration acquisition device, 4 is brake control, 41
It is brake pedal detection control apparatus for braking target value coalignment, 5,6 be accelerator pedal detection control apparatus, 7 is steering
Angle detection control apparatus.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Core of the invention is to provide a kind of lightweight electric powered vehicles brake control method, which can be timely
Brake response accurately is made, vehicle is avoided driving safety accident occur.
Another core of the present invention is to provide a kind of system for realizing above-mentioned lightweight electric powered vehicles brake control method.
It is a kind of specific reality of lightweight electric powered vehicles brake control method provided by the present invention to please refer to Fig.1 to Fig. 3, Fig. 1
Apply the flow chart of example one；Fig. 2 is a kind of specific embodiment two of lightweight electric powered vehicles brake control method provided by the present invention
Flow chart；Fig. 3 is a kind of flow chart of the specific embodiment three of lightweight electric powered vehicles brake control method provided by the present invention.
A kind of lightweight electric powered vehicles brake control method provided by the present invention, is mainly used for the control of lightweight electric powered vehicles
System.The above method includes the following steps：
Step S1：Obtain vehicle current speed and accelerator pedal aperture.
Step S2：Judge whether speed is more than preset throttle brake speed, works as if it is not, then returning and obtaining vehicle
The step of preceding speed and accelerator pedal aperture, if it is, judging whether accelerator pedal aperture is more than preset throttle
Brake aperture；If the accelerator pedal aperture is more than preset throttle brake aperture, accelerator pedal is being detected
After lifting signal, the acceleration that accelerator pedal lifts is obtained, and execute next step.
Step S3：Judge acceleration whether be more than accelerator pedal all one's effort lift the 80% of acceleration, if it is, to vehicle
Electrical braking device send pre- brake signal, pre- brake signal includes that electrical braking device controls electric machine controller to electric horse
Up to reversed power transmission, braked with controlling electric notor.
It should be noted that it is vehicle traveling to obtain vehicle current speed and accelerator pedal aperture in above-mentioned steps S1
Speed under free position and accelerator pedal aperture, the effect of the step are to obtain the traveling of vehicle in vehicle travel process
State.
Speed in step S2 is the speed obtained in step S1, and the accelerator pedal aperture of vehicle is to be obtained in step S1
The accelerator pedal aperture arrived taken, corresponding, throttle brake speed is the preset speed used for this method, can
It is interpreted as critical speed, when speed is more than throttle brake speed, it can be determined that speed is in fast state；Similarly, throttle system
Dynamic aperture is the critical value of pedal aperture, when practical aperture is more than throttle brake aperture, it can be determined that vehicle, which is in, accelerates shape
State.When above-mentioned two judging result is to be, illustrate that vehicle is in high acceleration mode, control system, which can enter, to be accelerated
In pedal brake system.Step S2 utilizes the acquisition in step S1 as a result, when demanded, into accelerator pedal braking system
In.Into after accelerator pedal braking system, and when detecting after lifting signal of accelerator pedal, obtain what accelerator pedal lifted
Acceleration.
It should be noted that accelerator pedal lifts signal and can obtain there are many mode, such as accelerate to step on by obtaining
The detector acquisition of plate aperture, or be arranged at accelerator pedal its velocity of rotation, rotation acceleration sensor.It obtains and accelerates
The acceleration that pedal lifts can be by the detector acquisition of acquisition accelerator pedal aperture, or applies other methods.
The acceleration judged in step S3 is the acceleration that is obtained in step S2, and all one's effort of accelerator pedal is lifted acceleration and referred to
Be acceleration that accelerator pedal is not sprung back freely after by any artificial external force, lift acceleration with all strength when above-mentioned acceleration is more than
Degree 80% when, send pre- brake signal to the electrical braking device of vehicle, pre- brake signal includes braking information, electrodynamic braking
Device starts brake operating after receiving pre- brake signal.Wherein, braking information includes to keep control electric machine controller reversed to motor
The operation of power transmission, motor, which receives reversed electric current, to carry out reduction of speed to vehicle, to realize braking effect.
The lightweight electric powered vehicles brake control method that the present embodiment is provided to the vehicle in high speed acceleration mode into
Row monitoring, when monitoring rapidly to receive oil, judges that vehicle enters the state of emergency, passes through sentencing for the acceleration that is withdrawn to accelerator pedal
Disconnected, control vehicle carries out brake operating.Pre- brake operating provided by the present invention can prior to the brake operating of brake pedal, by
In using the judgement for withdrawing acceleration to accelerator pedal, the erroneous judgement for receiving oil operation to driver is avoided, prevents from actually making
The abuse braked in advance in, the operation that can reasonably parse driver are intended to, and the ride comfort of vehicle is made to be improved.
In view of electric notor is reversely transmitted electricity and can be braked to vehicle, but retro-speed is can to adjust and control
's.On the basis of above-described embodiment, before the step of sending pre- brake signal to vehicle electric brake apparatus, further include
Following steps：
Step S31：The deceleration desired value of vehicle braking is obtained according to the size of acceleration, and according to deceleration desired value
Determine that corresponding brake pressure, deceleration desired value are proportionate with brake pressure, brake pressure is for being sent to electronic system
The pre- brake signal of dynamic device；Electrical braking device applies reversed electricity according to braking pressure control to electric notor.
It is referred to it should be noted that obtaining deceleration desired value according to the size of acceleration：When accelerator pedal rebound
When acceleration is larger, deceleration desired value is larger；When the acceleration of accelerator pedal rebound is smaller, deceleration desired value is smaller.
To reach in such a way that acceleration magnitude obtains corresponding deceleration desired value, corresponding system is obtained with deceleration desired value
The process of dynamic pressure can be according to the process for obtaining brake pressure with brake pedal brake pressure in the prior art.
The vehicle brake control method that the present embodiment is provided can according to acceleration magnitude it is quantitative obtain it is corresponding
Deceleration desired value and brake pressure, to realize quantitative control to motor, the acceleration lifted to avoid accelerator pedal is not
Vehicle is braked with identical deceleration in the case of, and scheme provided in this embodiment can enable driving experience to carry
It rises.
On the basis of above-described embodiment, specifically, deceleration desired value is proportionate with brake pressure, further
Ground, the two are proportional.Mutually directly proportional the two growth rate having the same.
On the basis of any one above-mentioned embodiment, pre- braking letter is sent to the electrical braking device of vehicle in step
It is further comprising the steps of before number：
Step S32：The state for detecting vehicle steering device, judges whether vehicle is in steering state, if it is, obtaining
Current steering angle, and brake pressure is determined according to steering angle, the size of brake pressure and steering angle is in inverse ratio.
It should be noted that vehicle carries out rapidly braking when being in steering state may have danger, if in addition at vehicle
In on-position, it is also not suitable for being turned to, so, it should avoid braking when rotation.In the above-described embodiments, turn for being in
Vehicle into state obtains the current steering angle of vehicle, and determines brake pressure, phase according to current steering angle size first
Corresponding, when corner is larger, brake pressure is smaller, and when corner is smaller, brake pressure is larger.
Brake pressure size is controlled by working as front hook in the present embodiment, can be adjusted, avoid for different situations
The on-position of vehicle is identical under different situations.
On the basis of any one above-mentioned embodiment, pre- brake signal is sent to vehicle electric brake apparatus in step
Later, further include step：
Step S33：Whether the aperture for detecting brake pedal is in enlarging state, if it is, obtaining working as brake pedal
Preceding braking aperture obtains corresponding current brake pressure according to current brake aperture, and current system is obtained according to current brake pressure
Dynamic acceleration, judges whether current brake acceleration is more than currently practical braking acceleration；If it is, to electrical braking device
Send the ring off signal for releasing pre- brake signal, and control electric controller according to the current brake acceleration of brake pedal into
Row braking；If it is not, then control electric controller is braked still according to pre- brake signal；
Meanwhile whether the aperture for detecting accelerator pedal is in enlarging state, is solved if it is, being sent to electrical braking device
Except brake signal.
It should be noted that brake pedal is brake pedal, the aperture of brake pedal, which is in enlarging state and refers to braking, steps on
Plate tramples degree increase, that is to say, that brake pedal is operated, then obtains the current aperture of brake pedal, and by current aperture
Corresponding current brake pressure is obtained, and obtains braking acceleration in turn, the correspondence of the prior art may be used in this acquisition process
Lookup mode.
Then, current brake acceleration and currently practical braking acceleration are compared, wherein currently practical braking adds
Speed is the currently practical braking acceleration of vehicle, can be obtained by sensor, or obtained by vehicle control system and
Come.
When current brake acceleration is more than currently practical braking acceleration, the acceleration of accelerator pedal braking is also indicated that not
Current brake requirement can be met, on the basis of accelerator pedal is braked, driver also needs to carry out additional braking, at this point, can
To send ring off signal to electrical braking device, ring off signal is for releasing above-mentioned pre- brake signal, that is, the pre- braking of stopping
The effect of signal, and control electric controller and braked according to the current brake acceleration of brake pedal.
When current brake acceleration is less than currently practical braking acceleration, show that driver need not carry out additional system
It is dynamic, then electric controller can be kept still to keep the state of a control of pre- brake signal.
It should be noted that above-mentioned steps S33 is to implement after sending pre- brake signal to vehicle electric brake apparatus, and
Therebetween it needs that a period is arranged, to allow driver to carry out the reaction of brake operating.The period can be according to making
It is set in advance, and is modified with situation.
The step S33 that the present embodiment is provided can reflect pre- brake signal by driver to the operation of brake pedal
Accuracy, and secondary adjustment is carried out to electric controller, this method can be implemented to adjust vehicle braking state, facilitate driver
Manipulation.
On the basis of any one above-mentioned embodiment, the same of pre- brake signal is sent to the electrical braking device of vehicle
When, the present speed of vehicle is detected, when present speed is more than preset vehicle speed critical value, is sent out to the electric brake auxiliary system of vehicle
Send brake signal.
It should be noted that preset vehicle speed critical value refers to the judgement to vehicle safety state, it can reflect that vehicle is worked as
It is preceding braked after safe coefficient, if be more than preset vehicle speed critical value, show that the safety of vehicle is low, need simultaneously to electricity
Sub- brake assist system sends brake signal, and electric brake auxiliary system is made to carry out working condition, to promote the safety of vehicle,
Safety accident is avoided the occurrence of, the guarantee to vehicle driving safety is promoted.
Optionally, above-mentioned brake signal can also be sent to other Vehicle security systems, so that vehicle keeps whole control
State.
In addition to the lightweight electric powered vehicles brake control method that above-mentioned each embodiment is provided, the present invention also provides a kind of use
In the system for implementing method disclosed in above-described embodiment, i.e. lightweight electric powered vehicles braking control system.Provided by the present invention one
Lightweight electric powered vehicles braking control system is planted, includes mainly in structure composition：State acquisition device 1, default judgment means 2,
Acceleration acquisition device 3 and brake control 4.
Referring to FIG. 4, Fig. 4 is a kind of specific embodiment of lightweight electric powered vehicles braking control system provided by the present invention
System schematic.
Wherein, state acquisition device 1 is for obtaining the current speed of vehicle and accelerator pedal aperture.
Default judgment means 2 connects with state acquisition device 1, preset prestored in judgment means 2 throttle brake speed with
Throttle brake aperture judges whether accelerator pedal aperture is more than throttle system for judging whether speed is more than throttle brake speed
Dynamic aperture sends if being to be and executes signal to acceleration acquisition device 3.
Acceleration acquisition device 3 is used to detect the signal that lifts of accelerator pedal after getting execution signal, and obtains and add
The acceleration that speed pedal lifts.
The brake control 4 being connect with acceleration acquisition device 3, all one's effort for being more than accelerator pedal when acceleration are lifted
When playing the 80% of acceleration, pre- brake signal is sent to the electrical braking device of vehicle, pre- brake signal includes electrodynamic braking dress
Control electric machine controller is set to the anti-power transmission of electric notor, is braked with controlling electric notor.
Specifically, state acquisition device 1 can be the sensor for measuring speed and aperture, and vehicle speed sensor can be arranged
Wheel or vehicle other positions, jaw opening sensor can be arranged tramples place in accelerator pedal, or is arranged in accelerator pedal
At electric control element or at oil cylinder, state acquisition device 1 or the signal being connect with vehicle control system send acquisition device,
By the way of indirect gain, the mode of indirect gain can utilize the existing detection device of vehicle, reduction to be arranged on vehicle
The space hold of other devices.
Default judgment means 2 can be common controller, prestore throttle brake speed and throttle system in the controller
Dynamic aperture is greater than or equal to throttle brake speed when the speed that state acquisition device 1 obtains corresponds to, and accelerator pedal aperture corresponds to
When more than or equal to throttle brake aperture, illustrate that vehicle is in the state of high speed and high acceleration, an emergency situation is encountered for vehicle
When unexpected braking occur when, the reaction of driver may be not in time.At this point, default judgment means 2 can then send and execute letter
Number give acceleration acquisition device 3.
Acceleration acquisition device 3 is used to lift signal acquisition to accelerator pedal after getting above-mentioned execution signal, when
It gets after lifting signal, then obtains the acceleration that accelerator pedal lifts, and be sent to brake control 4.Acceleration obtains
Device 3 is connect with default judgment means 2, and can realize that signal transmits.
Brake control 4 can be the controller being connect with acceleration acquisition device 3, wherein prestoring accelerator pedal
Acceleration is lifted with all strength, when the acceleration that acceleration acquisition device 3 is sent, which is greater than or equal to, lifts the 80% of acceleration with all strength,
Electric machine controller is controlled to the anti-power transmission of electric notor.
On the basis of above-described embodiment, brake control 4 includes braking target value coalignment 41, braking target
Value coalignment 41 is used to obtain the deceleration desired value of vehicle braking according to the size of acceleration, and according to deceleration desired value
Determine that corresponding brake pressure, deceleration desired value are proportionate with brake pressure.
It should be noted that above-mentioned braking target coalignment can be the control dress with database or data form
It sets, corresponding data query output can be carried out according to existing data.
Optionally, the specific workflow of braking target value coalignment 41 please refers to the embodiment of the above method.
On the basis of any one above-mentioned embodiment, further include：Brake pedal detection control apparatus 5 and accelerator pedal
Detection control apparatus 6.
Wherein, brake pedal detection control apparatus 5 is used for after brake control 4 sends pre- brake signal, detection
The current brake aperture of brake pedal obtains current brake acceleration according to current brake aperture, judges current brake acceleration
Whether currently practical braking acceleration is more than；If it is, sending the releasing letter for releasing pre- brake signal to electrical braking device
Number, and control electric controller and braked according to the current brake acceleration of brake pedal；If it is not, then controlling electronic control
Device processed is braked still according to pre- brake signal.
Whether the aperture that accelerator pedal detection control apparatus 6 is used to detect accelerator pedal is in enlarging state, if it is,
It is sent to electrical braking device and releases brake signal.If it is not, then can be without operation, i.e., only when whether above-mentioned aperture is in
When enlarging state, is sent to electrical braking device and release brake signal.
Optionally, the control mode of above-mentioned brake pedal detection control apparatus 5 and accelerator pedal detection control apparatus 6 can be with
With reference to the embodiment of above-mentioned lightweight electric powered vehicles brake control method.
Further include the steering angle detection being connect with the transfer of vehicle on the basis of any one above-mentioned embodiment
Control device 7, steering angle detection control apparatus 7 determine brake pressure for obtaining current steering angle according to steering angle, brake
Pressure and the size of steering angle are in inverse ratio.
It should be noted that can carry out mutually referring to and combining between any one above-mentioned embodiment.
In addition to the lightweight electric powered vehicles braking control system that above-mentioned each embodiment is provided, the present invention also provides a kind of packets
The vehicle of system disclosed in above-described embodiment is included, which has car body and above system, the knot of other each sections of the vehicle
Refer to the prior art for structure, and repeats no more herein.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
It is described in detail above to provided by the present invention.Specific case used herein is to the principle of the present invention
And embodiment is expounded, the explanation of above example is only intended to help to understand that the method for the present invention and its core are thought
Think.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, may be used also
With several improvements and modifications are made to the present invention, these improvement and modification are also fallen within the protection scope of the claims of the present invention.
Claims (10)
1. a kind of lightweight electric powered vehicles brake control method, which is characterized in that including：
Obtain vehicle current speed and accelerator pedal aperture；
Judge whether the speed is more than preset throttle brake speed, the current vehicle of vehicle is obtained if it is not, then returning
The step of speed and accelerator pedal aperture, if it is, judging whether the accelerator pedal aperture is more than preset throttle system
Dynamic aperture；If the accelerator pedal aperture is more than preset throttle brake aperture, in the lift for detecting accelerator pedal
After playing signal, the acceleration that accelerator pedal lifts is obtained, and execute next step；
Judge the acceleration whether be more than the accelerator pedal all one's effort lift the 80% of acceleration, if it is, to vehicle
Electrical braking device send pre- brake signal, the pre- brake signal includes the electrical braking device control electric machine controller
To the anti-power transmission of electric notor, braked with controlling the electric notor.
2. lightweight electric powered vehicles brake control method according to claim 1, which is characterized in that described to vehicle electric system
Before dynamic device sends pre- brake signal, including：
The deceleration desired value of vehicle braking is obtained according to the size of the acceleration, and is determined according to the deceleration desired value
Corresponding brake pressure, the deceleration desired value are proportionate with the brake pressure, and the brake pressure is for sending
To the pre- brake signal of the electrical braking device；The electrical braking device is according to the braking pressure control to described
Electric notor applies reversed electricity.
3. lightweight electric powered vehicles brake control method according to claim 2, which is characterized in that the deceleration desired value
It is proportional with the brake pressure.
4. lightweight electric powered vehicles brake control method according to claim 3, which is characterized in that described to the electronic of vehicle
Before brake apparatus sends pre- brake signal, further include：
The state for detecting vehicle steering device, judges whether vehicle is in steering state, if it is, current steering angle is obtained,
And the brake pressure is determined according to the steering angle, the size of the brake pressure and the steering angle is in inverse ratio.
5. lightweight electric powered vehicles brake control method according to any one of claims 1 to 4, which is characterized in that described
After sending pre- brake signal to vehicle electric brake apparatus, further include：
Whether the aperture for detecting brake pedal is in enlarging state, if it is, the current brake for obtaining the brake pedal is opened
Degree obtains corresponding current brake pressure according to the current brake aperture, and current system is obtained according to the current brake pressure
Dynamic acceleration, judges whether current brake acceleration is more than currently practical braking acceleration；If it is, to the electrodynamic braking
Device sends the ring off signal for releasing the pre- brake signal, and controls the electric controller according to the brake pedal
The current brake acceleration is braked；If it is not, then controlling the electric controller still according to the pre- brake signal
It is braked；
Meanwhile whether the aperture for detecting the accelerator pedal is in enlarging state, if it is, being sent out to the electrical braking device
Send releasing brake signal.
6. lightweight electric powered vehicles brake control method according to claim 5, which is characterized in that described to the electronic of vehicle
While brake apparatus sends pre- brake signal, the present speed of vehicle is detected, when the present speed faces more than preset vehicle speed
When dividing value, brake signal is sent to the electric brake auxiliary system of vehicle.
7. a kind of lightweight electric powered vehicles braking control system, which is characterized in that including：
State acquisition device, for obtaining the current speed of vehicle and accelerator pedal aperture；
The default judgment means being connect with the state acquisition device prestore throttle brake speed and throttle brake aperture, use
In judging whether the speed is more than the throttle brake speed, judge whether the accelerator pedal aperture is more than the throttle system
Dynamic aperture sends execution signal and gives acceleration acquisition device if being to be；
Acceleration acquisition device, for after getting the execution signal detection accelerator pedal lift signal, and obtain institute
State the acceleration that accelerator pedal lifts；
The brake control being connect with the acceleration acquisition device, for being more than the accelerator pedal when the acceleration
When lifting the 80% of acceleration with all strength, pre- brake signal is sent to the electrical braking device of vehicle, the pre- brake signal includes
The electrical braking device controls electric machine controller to the anti-power transmission of electric notor, is braked with controlling the electric notor.
8. lightweight electric powered vehicles braking control system according to claim 7, which is characterized in that the brake control
Including braking target value coalignment, the braking target value coalignment is used to obtain vehicle according to the size of the acceleration
The deceleration desired value of braking, and corresponding brake pressure, the deceleration desired value are determined according to the deceleration desired value
It is proportionate with the brake pressure.
9. lightweight electric powered vehicles braking control system according to claim 7 or 8, which is characterized in that further include：
Brake pedal detection control apparatus detects brake pedal after sending pre- brake signal in brake control
Current brake aperture obtains current brake acceleration according to the current brake aperture, judges whether current brake acceleration is big
In currently practical braking acceleration；If it is, sending the releasing for releasing the pre- brake signal to the electrical braking device
Signal, and control the electric controller and braked according to the current brake acceleration of the brake pedal；If
It is no, then it controls the electric controller and is braked still according to the pre- brake signal；
Whether accelerator pedal detection control apparatus, the aperture for detecting the accelerator pedal are in enlarging state, if it is,
It is sent to the electrical braking device and releases brake signal.
10. lightweight electric powered vehicles braking control system according to claim 9, which is characterized in that further include and vehicle
The steering angle detection control apparatus of transfer connection, steering angle detection control apparatus for obtaining current steering angle, and according to
The steering angle determines the brake pressure, and the size of the brake pressure and the steering angle is in inverse ratio.
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| CN108556824B (en) * | 2018-01-29 | 2020-08-28 | 北京新能源汽车股份有限公司 | Automobile braking method, braking device, braking equipment and automobile |
| CN108725257A (en) * | 2018-04-08 | 2018-11-02 | 江西优特汽车技术有限公司 | Electric automobile whole-control system and its control method |
| CN110775032B (en) * | 2019-10-25 | 2021-09-14 | 精诚工科汽车系统有限公司 | Control method and device of electronic brake booster and vehicle |
| CN110979023A (en) * | 2019-11-21 | 2020-04-10 | 摩登汽车有限公司 | Vehicle emergency braking control system and method based on energy recovery and electronic control braking |
| CN114056301B (en) * | 2020-07-30 | 2022-08-12 | 上汽通用汽车有限公司 | Soft stop control method and system of electronic control brake booster and vehicle |
| CN112026732B (en) * | 2020-08-20 | 2022-04-12 | 中国第一汽车股份有限公司 | Pre-supercharging control method and device, vehicle and storage medium |
| CN112339732A (en) * | 2020-09-07 | 2021-02-09 | 上海熙众新能源技术有限公司 | Braking system and braking method thereof |
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| KR100559868B1 (en) * | 2003-10-30 | 2006-03-13 | 현대자동차주식회사 | A brake system and a control method for prevention of collision using radio communication |
| DE102011081724A1 (en) * | 2011-08-29 | 2013-02-28 | Robert Bosch Gmbh | Method for controlling a deceleration arrangement of a motor vehicle |
| US9656573B2 (en) * | 2013-09-10 | 2017-05-23 | Volvo Construction Equipment Ab | Method and device for sensory control of hybrid operation machine |
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