CN105835857B - Automobile-used brake-by-wire device with flexible redundant unit - Google Patents
Automobile-used brake-by-wire device with flexible redundant unit Download PDFInfo
- Publication number
- CN105835857B CN105835857B CN201610224450.8A CN201610224450A CN105835857B CN 105835857 B CN105835857 B CN 105835857B CN 201610224450 A CN201610224450 A CN 201610224450A CN 105835857 B CN105835857 B CN 105835857B
- Authority
- CN
- China
- Prior art keywords
- wheel
- clutch
- brake
- drive
- braking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/04—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting mechanically
- B60T11/046—Using cables
-
- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
-
- 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
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/82—Brake-by-Wire, EHB
Abstract
The invention discloses a kind of brake-by-wire devices with flexible redundant unit, including a braking importation, one brake output section point, a control for brake part, one Flexible Transmission part, driving wheel, an intermediate transmission mechanism and two two-way controllable clutch mechanisms are applied including one in Flexible Transmission part, On-line Control, which is moved, can realize redundancy brake boost pattern under system fault condition, utmostly keep braking maneuver portability；Under the extreme cases such as system power supply failure, device can be switched to Flexible Transmission, realizes pedal brake pattern, not against electric power, hydraulic pressure, fundamentally ensures safety.
Description
Technical field
The present invention relates to a kind of brake-by-wire device more particularly to a kind of automobiles with achievable multi-mode flexibility redundancy
Brake-by-wire device.
Background technology
Automobile brake-by-wire (BBW) set electron parking braking (EPB), electronic stability control (ESP), electronic braking force distribution
(EBD), deceleration of electrons auxiliary (EBA), braking anti-lock (ABS), the technology related with braking such as automatic emergency brake (AEB) in
All over the body, have many advantages, such as that fast response time, pedal force are adjustable compared with conventional hydraulic braking system, largely improve system
Dynamic portability, control stability and active safety represent automotive safety, intelligent developing direction.
But accompanying problem is that how to ensure the reliability of system itself, i.e., when hairs such as Mechatronic Systems, power-supply systems
How to ensure that driver realizes control for brake by brake pedal during raw failure.Way more commonly used at present is to use：1st, it is electric
Control system redundancy；2nd, conventional hydraulic redundancy.Method 1 using stand-by power supply, bi-motor, double ECU, two sets of dual sensor etc. or
The electronic device of more than quantity, it is impossible to fundamentally solve the security risk that electronic system failure itself is brought, and be entirely
Volume of uniting is big, control is complicated, of high cost, not easy care etc.；Method 2 generally increases electric control in original brake fluid system
Dynamic actuator by the use of brake fluid system as spare, in space layout still as brake fluid system, can not embody line traffic control
The characteristics of system flexible arrangement, and there is also the incipient faults that oil circuit is revealed for hydraulic redundancy itself.
Invention content
The technical problem to be solved by the present invention is to overcome problem of the existing technology, providing a kind of has flexible redundancy
Automobile-used brake-by-wire device, premised on improving reliability, it is intended to which pedal brake and non-faulting can be kept by realizing under malfunction
Brake provides braking moment simultaneously, realizes redundancy brake boost pattern, utmostly keeps braking maneuver portability；In electromechanics
System jam can not work or the extreme case of power cut-off under, device can be switched to Flexible Transmission, realize pedal brake
Pattern fundamentally ensures safety；
To solve the above problems, the technical solution adopted by the present invention is：It provides a kind of with the automobile-used of flexible redundant unit
Brake-by-wire device, including：
One braking importation, the electronic pedal for carrying pedal sense simulator and sensor including one, braking input
It is applied on the electronic pedal；
One brake output section point, including the braking with actuator, transmission mechanism, clearance adjustment mechanism and sensor
Device, brake keep work to connect with wheel respectively, are applied to by the determining braking moment of braking input by direct or indirect
On wheel；
One control for brake part, including a control unit and a failure diagnosis unit, control unit and fault diagnosis list
Member is communicated by vehicle bus, and different braking operation patterns is realized according to the status command control received；
Driving wheel, an intermediate transmission mechanism and two two-way controllable clutch mechanisms are applied in one Flexible Transmission part including one, in
Between transmission mechanism include jackshaft and the Left Drive wheel, intermediate transmission wheel, right drive of jackshaft be installed on by bearing,
Three is coaxial, symmetrical with intermediate transmission wheel axial centre, Left Drive wheel and intermediate transmission wheel, right drive and intermediate transmission
Wheel is by key connection, and two two-way controllable clutch mechanism structures are identical, including star-wheel, clutch in drive outside clutch, clutch
Turning wheel, the outer drive of clutch and star-wheel in clutch are coaxial, several with formation on the outside of star-wheel in clutch on the inside of the outer drive of clutch
To circumferentially uniformly distributed wedge shape space pair, two wedge-shaped narrow spaces of each wedge shape space centering are opposite, interior a pair of of roller of installation,
Roller makes it be contacted with working face on the outside of star-wheel in drive inward facing surface outside clutch and clutch through spring pre-tightening, each pair of roller
It is separated by the shift fork of clutch turning wheel, clutch turning wheel and star-wheel clearance fit in clutch, with brake transmission system driving member
Key connection；
Apply driving wheel centre bore and electronic pedal shaft be affixed, apply the intermediate transmission wheel of driving wheel and intermediate transmission mechanism directly or
It is connected indirectly by flexible member, Left Drive wheel and the outer drive of clutch of a two-way controllable clutch mechanism directly or indirectly lead to
Flexible member connection is crossed, right drive is with drive outside the clutch of another two-way controllable clutch mechanism directly or indirectly through soft
Property element connection, two-way controllable clutch mechanism is installed between actuator and brake transmission mechanism a pair of rotary drive pair,
Clutch turning wheel and driving pair element are affixed, and star-wheel and driven secondary element are affixed in clutch.
Roller adjacent thereto has centainly the clutch turning wheel shift fork of wherein two-way controllable clutch mechanism in a free state
Unidirectional gap, the frictional force that roller generates in wedge shape space during wedging, more than direct or indirect dragging power-off actuator idle running
Suffered resistance, directly acts on or the stalling torque of indirect transfer less than actuator.
Wherein its angular travel of electronic pedal through apply driving wheel, intermediate transmission mechanism, two-way controllable clutch mechanism clutch outside
Value after drive transmission completely eliminates brake system more than drive outside the clutch that actuator drives two-way controllable clutch mechanism
The angle value that dynamic gap is turned over.
Wherein, two-way controllable clutch mechanism is installed in non-steering wheels brake, and the vehicle of four-wheel steering is then installed
In rear wheel brake.
Wherein control unit is equipped with braking switching switch, connects power supply and actuator, the switch are placed in steering wheel or steering
On column or master control borad, instrument board is equipped with corresponding indicator light.
Compared with prior art the beneficial effects of the invention are as follows：
Redundancy transmission is not against electric power, hydraulic pressure, it can be achieved that 3 kinds of brake-by-wire, redundancy brake boost, pedal brake Working moulds
Formula has the advantages that reliability is high, braking is light.
It can be assembled after simple transformation with existing brake-by-wire device, form the flexible redundancy line traffic control with above-mentioned function
Dynamic system, has the characteristics that simple in structure, convenient, flexible；
Description of the drawings
With reference to the explanation of the preferred implementing form of accompanying drawings below, will become more apparent that ground understands the present invention.But form of implementation and
Attached drawing is used for simple diagram and explanation, is not applied to limit the scope of the present invention, the scope of the present invention is true by claims
It is fixed.
Fig. 1 is the overall structure decomposition diagram of the present invention, for illustrating that the connection between each assembly critical piece of system is closed
System and the basic function of system.
Fig. 2 is intermediate transmission mechanism structure diagram of the present invention, for illustrating its basic structure and operation principle.
Fig. 3 is the two-way controllable clutch mechanism structure schematic diagram of the present invention, for illustrating its basic system and operation principle.
Fig. 4 is flexible drive mechanism operation principle schematic diagram of the present invention, for solving the operation principle of release system.
Specific embodiment
The preferred embodiment of the present invention is illustrated according to Fig. 1~Fig. 4.
Fig. 1 shows the overall structure decomposition diagrams of the present invention.Electronics with pedal sense simulator and sensor is stepped on
Plate 10 is installed in metal body appropriate position in car steering room, and shaft is keyed with applying driving wheel 1, and applying outside driving wheel 1 has guarantor
Shield 11 is installed on by bolt on 10 ontology of electronic pedal；Intermediate transmission mechanism 2 is mounted on by bearing in housing 9, shell
Body 9 selects appropriate location to be installed on automobile metal vehicle body according to the special case of automobile chassis；Two-way controllable clutch mechanism 3,
4 are respectively arranged between two transmission of non-steering wheels brake power train, and the assembly of drive gear formed is respectively arranged in case
Within body 7,8, babinet 7,8 is installed in by bolt respectively on braking executive component, and for the present embodiment, executive component is braking
Clamp 5,6；It applies and is flexibly connected between driving wheel 1 and intermediate transmission mechanism 2, intermediate transmission mechanism 2 and two-way controllable clutch 3,4,
Flexible axle or wire digging line can be used, be automobile-used wire digging line 12,13,14 in the present embodiment, represented in figure with double dot dash line.
Under normal operation, system is in brake-by-wire pattern, and stepping on electronic pedal 10 by foot gives target rotation angle, control
Braking moment is passed to brake caliper 5,6 by system control actuator processed by two-way controllable clutch mechanism 3,4 through transmission mechanism；
Meanwhile the drive of electronic pedal 10 is applied and moves in turn 1 through the drive intermediate transmission mechanism 2 of wire digging line 12, intermediate transmission mechanism 2 passes through steel wire
Drag-line 13,14 drives two-way controllable clutch mechanism 3,4, and herein, two-way controllable clutch mechanism 3,4 realizes foot-operated target input and makees
Dynamic device reality output separation, two-way transmission is non-interference, and the load that electronic pedal 10 is born is provided by pedal sense simulator, real
Existing pedal sense is adjustable, and the actual loading of braking is overcome by system control actuator output power, is realized and is being forced to move, turn at a high speed
The functions such as ABS, ESP under the unconventional operating modes such as, skid steer.
It is any by the improper stall of actuator and system itself can not correct caused by under brake fade state, can pass through
Driver clicks braking switching switch manually, cuts off the actuator power supply of brake, and flexible redundant unit is in work at this time
Make state；In addition to the conditions already mentioned, flexible redundant unit can intervene working condition automatically, be included in the extreme item of system power supply failure
Part.When flexible redundant unit works, foot steps on electronic pedal 10, and drive, which is applied, moves in turn 1 through the drive intermediate transmission machine of wire digging line 12
Structure 2, intermediate transmission mechanism 2 drive two-way controllable clutch mechanism 3,4 by wire digging line 13,14, at this point, motor power-off is in certainly
By state, braking moment can be transmitted to brake caliper 5,6 by two-way controllable clutch mechanism 3,4 through transmission mechanism, realize foot-operated system
It is dynamic.
In above process, if side non-steering wheels brake troubles, pedal brake torque is by intermediate transmission mechanism 2
Two-way controllable clutch mechanism 3 or 4 is driven to be transmitted to brake caliper 5 or 6 through wire digging line 13 or 14；If non-steering wheels both sides system
Device whole failure is moved, then pedal brake torque drives two-way controllable clutch mechanism by intermediate transmission mechanism 2 through wire digging line 13,14
3rd, 4 it is transmitted to brake caliper 5,6.In above-mentioned two situations, pedal brake and the movement of other normal brakes are non-interference, foot
It steps on braking and electrodynamic braking works at the same time the redundancy brake boost, it can be achieved that under malfunction.
Fig. 2 is intermediate transmission mechanism structure diagram of the present invention.Intermediate transmission mechanism overall structure is with intermediate transmission wheel 20
Axial centre is symmetrical, be described in detail by taking symmetry axis left part as an example its construction and operation principle, on the right side of right transmission
It takes turns 23 same, does not repeat herein.Intermediate transmission wheel 20, Left Drive wheel 21 are installed on jackshaft 22 by bearing, and centre passes
Driving wheel 20 coordinates with 21 transition of Left Drive wheel, ensures certain concentricity, and pass through key connection.This left and right drive is in
Between drive split structure the advantages of be：Different drive ratios can be realized by the left and right drive for replacing different radii,
Meet the needs of different vehicle.
Preferably, the present embodiment using automobile-used wire digging line as flexible drive element, wire digging line including steel wire rope,
Casing, sleeve cap, sheath, connector etc., structure can refer to professional standard or the description of product of other suppliers.The steel of wire digging line
Cord 12a, 12b is wrapped on the spiral guide slot of 20 outer surface of intermediate transmission wheel, and end is fixed respectively by connector 12c, 12d
In the groove on the outside of 20 end face of intermediate transmission wheel, wire digging line individual layer arrangement, the number of turns wound meets under setting gearratio
It realizes maximum angle stroke needed for braking, steel wire rope arrangement, the peace of driving wheel 1 is applied in Left Drive wheel 21, right drive 23 and Fig. 1
Dress is identical with above structure.
To ensure to ride braking moment under Flexible Transmission in the coordination of left and right drive, single wheel brake clearance is avoided
After eliminating in advance, opposite side cannot continue to braking moment, while also be steel wire caused by automatic compensation summer in winter temperature sets variation
Rope dilatation, is equipped with adjusting apparatus on the wire digging line of left and right drive.With the steel wire rope in Fig. 2 on Left Drive wheel 21
Illustrate for 12a, right drive 23 is identical with its structure, does not repeat.Adjustment spring 12f is sleeved on adjustment screwed pipe 12e, and one end is solid
Due to housing 9, adjustment screwed pipe 12e, adjustment screwed pipe 12e one end and 9 mounting hole clearance fit of housing, other end processing are withstood in one end
Screw thread, equipped with adjusting nut 12h and locking nut 12g, adjusting nut resists wire digging line sleeve cap 12i, is adjusted by rotating
Nut 12h adjusts pretightning force, and passes through locking nut 12g and lock.It is same in the left and right drive of flexible drive mechanism after adjusting
When participate in work when, if right drive due to wheel braking gap eliminate and leading stop, at this moment, pedal brake torque continue
Apply, steel wire rope 12a is forced to oppress wire digging line casing 12j, and sleeve cap 12i is driven to squeeze adjusting nut 12h, make its promotion
Adjust screwed pipe 12e compression adjustment spring 12f, then steel wire rope 12a can further trace movement, realize that Left Drive wheel continues to make
Kinetic moment, the braking moment for completing left and right drive are coordinated, and the adjustment process of Left Drive wheel elder generation stop is similarly.Additionally due to the winter
Thus steel wire rope micro-strain amount caused by the summer temperature difference can also compensate automatically.
Fig. 3 is the two-way controllable clutch mechanism structure schematic diagram of the present invention.Left and right two-way controllable clutch machine described in the present embodiment
Structure structure is identical, this is sentenced, and its construction and operation principle are described in detail for left two-way controllable clutch mechanism, it is right it is two-way controllably from
It is same to close mechanism, does not repeat herein.The outer drive 31a and star-wheel 31c in left clutch of left clutch is coaxial, inside and a left side from
Formed on the outside of star-wheel 31c several to circumferentially uniformly distributed wedge shape space pair in conjunction, two wedge shapes of each wedge shape space centering are narrow
Space is opposite, interior a pair of of roller of installation, roller make it with drive 31a inward facing surfaces outside left clutch through spring pre-tightening and a left side from
Working face contacts on the outside of star-wheel 31c in conjunction, and each pair of roller is separated by the shift fork of left clutch turning wheel 31b, to mitigate work abrasion,
Spring can be equipped with top cap with roller-contact end, and top cap, in inner cylinder shape, is bonded, top cap material with roller-contact face with cylindrical roller
Hardness is less than roller surface hardness, and roller surface hardness is less than on the inside of the outer drive 31a of left clutch and in left clutch outside star-wheel 31c
Side work surface hardness.Left clutch turning wheel 31b and star-wheel 31c clearance fits in left clutch, are equipped with keyway, can be passed with brake
Dynamic drive system part key connection.Preferably, left clutch turning wheel 31b is keyed with actuator 50 in the present embodiment, left clutch
Interior star-wheel 31c is keyed with driving member 51, other driving members keep being sequentially connected driving member 51 with brake transmission mechanism.A left side from
Arrangement, the installation form for closing the steel wire rope of outer drive 31a are identical with the mechanism form of Fig. 2 intermediate transmissions wheel 20, do not go to live in the household of one's in-laws on getting married herein
It states.
When drive 31a actives outside the left clutch of left two-way controllable clutch mechanism, if left clutch turning wheel 31b at this time
In unloaded free state, the outer drive 31a of left clutch drives side roller to roll to wedge shape space narrow side, makes roller wedging,
Then the outer drive 31a of left clutch drives in left clutch star-wheel 31c clockwise or counterclockwise by wedging roller, the rolling of wedging
Column pushes the shift fork of the left clutch turning wheel 31b in unloaded free state, drive left clutch turning wheel 31b together clockwise or
Rotation counterclockwise；If left clutch turning wheel 31b stalls at this time, shift fork stops in the roller of wedge shape space wedging, makes it
Wedge is solved, then the outer drive 31b idle running of left clutch；If left clutch turning wheel 31b is clockwise or counterclockwise at this time, group
Fork can be all pushed in the roller of wedge shape space wedging, it is made to solve wedge, the outer drive 31a and left clutch turning wheel 31b of left clutch
Respectively operating, it is non-interference.
To realize above-mentioned function, to have certain condition in the design of two-way controllable clutch mechanism：
First, roller adjacent thereto has centainly the clutch turning wheel shift fork of two-way controllable clutch mechanism in a free state
Unidirectional gap, the frictional force that roller generates in wedge shape space during wedging, more than direct or indirect dragging power-off actuator idle running
Suffered resistance, directly acts on or the stalling torque of indirect transfer less than actuator；
Secondly, under above-mentioned condition limitation, the two-way controllable clutch mechanism roller number, wedge shape space the knots such as the angle of wedge
Structure parameter can refer to mechanical design handbook design and choose.
Fig. 4 is flexible drive mechanism operation principle schematic diagram of the present invention.The figure only represents the movement transitive relation between component,
It is not offered as its actual ratio and position.Fig. 4 middle sections represent intermediate transmission mechanism schematic diagram, and Fig. 4 right parts represent left
Two-way controllable clutch mechanism half-section diagram, the corresponding right part operation principle of said mechanism is identical with left side, herein only with
Its operation principle is illustrated for left part, right part does not repeat.
In normal operating conditions, driver steps on electronic pedal 10, and it is certain with fixed angular speed rotation that driving wheel 1 is applied in drive
Angle, meanwhile, electronic pedal sensor measurement to corresponding signal passes to controller, controller combination other sensors information with
Certain control law control actuator drives brake geartrain components to rotate by a certain angle with a fixed angular speed, due to electricity
Sub- pedal 10 needs to overcome certain system lash, friction, damping and system variant etc. during stepping on, it is caused to have
Small idle stroke, and the resolution ratio of sensor ensures that the idle stroke can be measured and passes to controller, controller can
Run actuator before the effective action prior to electronic pedal 10, and made up by backoff algorithm by actuator to braking
System lash, friction between executive component etc., as a result,：It moves after the actually active movement of actuator and first sends out, there are two for system
A drive circuit, all the way：Left clutch turning wheel 31b is driven to rotate, while left clutch is stirred by key by actuator output shaft 50a
Taking turns 31b pushes roller to drive star-wheel 31c in left clutch, and star-wheel 31c drives actuated element such as gear or same by key in left clutch
It walks the final drive brake actuator such as belt wheel and realizes braking, left clutch out star wheel 31a is in free state at this time；All the way：By
Driving wheel 1 is applied in the drive of electronic pedal 10, is applied driving wheel 1 and is driven intermediate transmission wheel 20 by wire digging line 12, intermediate transmission wheel 20 passes through
Key drives Left Drive wheel 21 to synchronize movement, and Left Drive wheel 21 drives drive 31a outside left clutch to make by wire digging line 13
Idling conditions is switched to by free state.Herein, two-way controllable clutch mechanism realization is ridden real with actuator to the input that sets the goal
Border output separation, as long as under system normal condition, two-way transmission is non-interference, and the load that electronic pedal 10 is born is by pedal sense
Simulator provides, and realizes that pedal sense is adjustable, and the actual loading of braking is overcome by system control actuator output power, is being forced
Under the unconventional operating modes such as dynamic, high speed steering, skid steer, need to control four-wheel independent brake, perform the functions such as ABS, ESP,
And foot-operated input at this time and actuator output movement are non-interference, ensure that the realization of brake-by-wire normal function.
Under nonserviceabling, when system fault diagnosis unit detects the non-steered wheel in left side or the non-steered wheel system in right side
When dynamic device breaks down, failure side actuator can be cut off by control unit and powered, be at free state；When system event
Barrier diagnosis unit can not be diagnosed when being out of order, can be by braking the artificial compulsory withdrawal brake-by-wire state of switching switch, the ownership
The actuator dump of dynamic device, is in free state；When system power supply failure can not power, all brakes
Actuator dead electricity is in free state.
When the non-steered wheel in left side actuator in a free state, outside the left clutch finally driven through electronic pedal 10
Drive 31a continues to move, and side roller is driven to roll to wedge shape space narrow side, makes roller wedging, then is driven outside left clutch
Take turns 31a drives star-wheel 31c in left clutch to rotate by wedging roller, and at this time since actuator output shaft 50a is in free shape
State, the roller solution wedge of wedging can not be driven idle running by the shift fork of left clutch turning wheel 31b being keyed with it, in left clutch
Pedal brake torque is passed through the driving member being keyed with it and is transmitted to brake caliper by star-wheel 31c, at this time two steered wheels and right side
Non- steered wheel braking moment still by control system control actuator output, realizes the redundancy brake boost under malfunction；Together
Reason, when the actuator of the non-steered wheel of arranged on left and right sides is in free state, finally drives left and right two-way through electronic pedal
Braking moment is transmitted to corresponding by star-wheel in the left-right clutch of controllable clutch mechanism, the driving member that the two drive respectively connects
Brake caliper, if the leading stop in side, the adjusting apparatus set on the wire digging line of left and right drive works, and realizes two
It brakes side.Two non-steered wheel braking moments still ensure that realization failure still by braking system control actuator output at this time
Redundancy brake boost under state；
When in non-brake-by-wire state, the actuator of all brakes is in power-off free state, at this point, deflecting roller
Stopping power is lost, braking moment only drives non-steered wheel by wire digging line by electronic pedal through intermediate transmission mechanism
Braking moment is transmitted to corresponding brake caliper, realizes foot by star-wheel in left-right clutch, the driving member that the two drive respectively connects
Step on braking.
As this preferred embodiment, system major parameter it is determining can refer to it is as follows：
According to the requirement of vehicle parameter and China's automobile brake specification, it can calculate and determine the output of brake executive component most
Big brake pressure is set as Nmax, with reference to brake and its power train concrete structure, can further calculate maximum braking moment and be set as
Mmax, in static state ideally, if the gearratio of brake power train is i0, then the stalling torque M of actuatord≥Mmax/i0,
Left two-way controllable clutch mechanism torque M allowable3≥Mmax/i0, right two-way controllable clutch mechanism torque M allowable4=M3；Intermediate transmission
Mechanism Left Drive wheel and the gearratio of the outer drive of the left two-way left clutch of controllable clutch mechanism are set as i23, the right biography of intermediate transmission mechanism
The gearratio of driving wheel and drive outside right two-way controllable clutch mechanism is set as i24, due to symmetrical configuration, i herein23=i24, then in
Between transmission mechanism torque M2=2 × M3/i23；The gearratio for applying driving wheel and intermediate transmission mechanism intermediate transmission wheel is set as i12, then
Driving wheel opplied moment is applied as M1=M2/i12If the torque arm length of electronic pedal is l, then maximum pedal force Fmax=M1/l.Consider dynamic
State situation and system effectiveness, above-mentioned calculating can further theoretical analysis and calculation, common empirical method in engineering can also be used,
Multiply certain safety coefficient on the basis of above-mentioned calculating, specifically refer to the related universal design data such as mechanical design handbook or mark
It is accurate.
Claims (5)
1. a kind of automobile-used brake-by-wire device with flexible redundant unit, including：
One braking importation, the electronic pedal for carrying pedal sense simulator and sensor including one, braking input are applied
It is added on the electronic pedal；
One brake output section point, including the brake with actuator, transmission mechanism, clearance adjustment mechanism and sensor, system
Dynamic device keeps work to connect with wheel respectively, and wheel is applied to by direct or indirect by the determining braking moment of braking input
On；
One control for brake part, including a control unit and a failure diagnosis unit, control unit is led to failure diagnosis unit
Vehicle bus communication is crossed, different braking operation patterns is realized according to the status command control received；
Characterized by further comprising：
Driving wheel, an intermediate transmission mechanism and two two-way controllable clutch mechanisms are applied in one Flexible Transmission part including one, and centre passes
Motivation structure includes jackshaft and the Left Drive wheel, intermediate transmission wheel, right drive of jackshaft, three is installed on by bearing
Coaxially, symmetrical with intermediate transmission wheel axial centre, Left Drive wheel leads to intermediate transmission wheel, right drive and intermediate transmission wheel
Key connection is crossed, two two-way controllable clutch mechanism structures are identical, stirred including star-wheel, clutch in drive outside clutch, clutch
Wheel, the outer drive of clutch and star-wheel in clutch are coaxial, are formed on the outside of the outer drive inside of clutch and star-wheel in clutch several to week
To uniformly distributed wedge shape space pair, two wedge-shaped narrow spaces of each wedge shape space centering are opposite, interior a pair of of roller of installation, roller
It is made to be contacted with working face on the outside of star-wheel in drive inward facing surface outside clutch and clutch through spring pre-tightening, each pair of roller by from
The shift fork for closing turning wheel separates, and clutch turning wheel and star-wheel clearance fit in clutch connect with brake transmission system driving member key
It connects；
It applies driving wheel centre bore and electronic pedal shaft is affixed, the intermediate transmission wheel for applying driving wheel and intermediate transmission mechanism is direct or indirect
It is connected by flexible member, Left Drive wheel is with drive outside the clutch of a two-way controllable clutch mechanism directly or indirectly through soft
Property element connection, the outer drive of clutch of right drive and another two-way controllable clutch mechanism is directly or indirectly through flexible member
Part connects, and two-way controllable clutch mechanism is installed between actuator and brake transmission mechanism a pair of rotary drive pair, clutch
Turning wheel and driving pair element are affixed, and star-wheel and driven secondary element are affixed in clutch.
2. the automobile-used brake-by-wire device with flexible redundant unit according to claim 1, it is characterised in that：Described
Roller adjacent thereto has certain unidirectional gap, roller to the clutch turning wheel shift fork of two-way controllable clutch mechanism in a free state
The frictional force generated during wedging in wedge shape space more than resistance suffered by direct or indirect dragging power-off actuator idle running, is less than
Actuator directly acts on or the stalling torque of indirect transfer.
3. the automobile-used brake-by-wire device with flexible redundant unit according to claim 1, it is characterised in that：Described
Its angular travel of electronic pedal through apply driving wheel, intermediate transmission mechanism, two-way controllable clutch mechanism clutch outside drive transmit after
Value, completely eliminate brake gap more than drive outside the clutch that actuator drives two-way controllable clutch mechanism and turned over
Angle value.
4. the automobile-used brake-by-wire device with flexible redundant unit according to claim 1, it is characterised in that：Described
Two-way controllable clutch mechanism is installed in non-steering wheels brake, and rear wheel brake is then installed on for the vehicle of four-wheel steering
In.
5. the automobile-used brake-by-wire device with flexible redundant unit according to claim 1, it is characterised in that：Described
Control unit is equipped with braking switching switch, connects power supply and actuator, the switch are placed on steering wheel or steering column or master control borad,
Instrument board is equipped with corresponding indicator light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224450.8A CN105835857B (en) | 2016-04-12 | 2016-04-12 | Automobile-used brake-by-wire device with flexible redundant unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224450.8A CN105835857B (en) | 2016-04-12 | 2016-04-12 | Automobile-used brake-by-wire device with flexible redundant unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105835857A CN105835857A (en) | 2016-08-10 |
| CN105835857B true CN105835857B (en) | 2018-06-29 |
Family
ID=56597456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610224450.8A Expired - Fee Related CN105835857B (en) | 2016-04-12 | 2016-04-12 | Automobile-used brake-by-wire device with flexible redundant unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105835857B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018111126A1 (en) * | 2018-05-09 | 2019-11-14 | Ipgate Ag | Brake system, especially for automated driving |
| CN109677388B (en) * | 2019-02-03 | 2024-02-27 | 上海蔚来汽车有限公司 | Electronic parking system, vehicle comprising same and control method |
| TWI735093B (en) * | 2019-10-04 | 2021-08-01 | 財團法人工業技術研究院 | Vehicle electronic brake system and brake linkage device thereof |
| CN111605532B (en) * | 2020-06-01 | 2021-07-27 | 长沙理工大学 | Connecting rod type power-assisted brake assembly |
| CN114954393B (en) * | 2022-03-28 | 2023-08-04 | 柳州五菱新能源汽车有限公司 | Vehicle control method and related device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3870131A (en) * | 1973-06-25 | 1975-03-11 | Automotive Prod Co Ltd | Internal shoe drum brakes |
| CN1441738A (en) * | 2000-04-11 | 2003-09-10 | Skf工程研究中心公司 | Vehicle control with manual back up |
| CN101746365A (en) * | 2008-12-11 | 2010-06-23 | 现代摩比斯株式会社 | Safety braking device of vehicle |
| CN203637798U (en) * | 2013-12-12 | 2014-06-11 | 中国嘉陵工业股份有限公司（集团） | Brake device of unmanned vehicle |
| CN205573930U (en) * | 2016-04-12 | 2016-09-14 | 吉林大学 | Automobile -used drive -by -wire arresting gear with flexible redundant mechanism |
-
2016
- 2016-04-12 CN CN201610224450.8A patent/CN105835857B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3870131A (en) * | 1973-06-25 | 1975-03-11 | Automotive Prod Co Ltd | Internal shoe drum brakes |
| CN1441738A (en) * | 2000-04-11 | 2003-09-10 | Skf工程研究中心公司 | Vehicle control with manual back up |
| CN101746365A (en) * | 2008-12-11 | 2010-06-23 | 现代摩比斯株式会社 | Safety braking device of vehicle |
| CN203637798U (en) * | 2013-12-12 | 2014-06-11 | 中国嘉陵工业股份有限公司（集团） | Brake device of unmanned vehicle |
| CN205573930U (en) * | 2016-04-12 | 2016-09-14 | 吉林大学 | Automobile -used drive -by -wire arresting gear with flexible redundant mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105835857A (en) | 2016-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105835857B (en) | Automobile-used brake-by-wire device with flexible redundant unit | |
| US10940845B2 (en) | Hybrid brake-by-wire system using a motor-magnetostrictive actuator combination | |
| US5975250A (en) | Apparatus and method for detecting the thickness of a brake lining | |
| US8157333B2 (en) | Braking device | |
| US10232834B2 (en) | Brake device | |
| US9387837B2 (en) | Brake device | |
| US6105737A (en) | Programmable electronic pedal simulator | |
| US20210078557A1 (en) | Electric brake device and electric brake control device | |
| US10933846B2 (en) | System, method, computer program and control unit for preventing a vehicle from rolling away | |
| US20180037207A1 (en) | Vehicle brake-by-wire system with a brake pedal emulator override device | |
| US9035591B2 (en) | Control method of electronic parking brake system | |
| JP7312859B2 (en) | VEHICLE CONTROL DEVICE, VEHICLE CONTROL METHOD AND VEHICLE CONTROL SYSTEM | |
| WO2020004124A1 (en) | Electric brake device, electric brake control device, and brake control device | |
| CN205573930U (en) | Automobile -used drive -by -wire arresting gear with flexible redundant mechanism | |
| US20210370897A1 (en) | Automatic controlled brake-by-wire braking system for motorcycles | |
| CN211642150U (en) | Double-electric-cylinder autonomous braking system adopting double-caliper brake | |
| CN206265016U (en) | A kind of fail safe decoupling type arrestment mechanism | |
| US20230103320A1 (en) | Hydraulic brake system | |
| Kant | Sensotronic brake control (SBC) | |
| US10053061B2 (en) | Brake pedal emulator of a brake-by-wire system for a vehicle | |
| JP2018052267A (en) | Brake control device | |
| US20230119160A1 (en) | System and method of preemptively readying a brake system | |
| US11964641B2 (en) | Electronic parking brake | |
| US6932440B1 (en) | Automotive braking method and devices for carrying out said method | |
| US20230018281A1 (en) | Method of controlling an electronic parking brake |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 Termination date: 20190412 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |