CN105691213A - Working method for integrated braking device with electromagnetic braking and friction braking - Google Patents
Working method for integrated braking device with electromagnetic braking and friction braking Download PDFInfo
- Publication number
- CN105691213A CN105691213A CN201610027625.6A CN201610027625A CN105691213A CN 105691213 A CN105691213 A CN 105691213A CN 201610027625 A CN201610027625 A CN 201610027625A CN 105691213 A CN105691213 A CN 105691213A
- Authority
- CN
- China
- Prior art keywords
- braking
- electromagnetic
- coil base
- pedal
- electromagnetic 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.)
- Granted
Links
Classifications
-
- 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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/20—Electric or magnetic using electromagnets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
- F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
- F16D2125/40—Screw-and-nut
Abstract
The invention discloses a working method for an integrated braking device with electromagnetic braking and friction braking. The integrated braking device includes three modes, namely, a non-working mode, only an electromagnetic braking working mode and a common working mode of electromagnetic braking and friction braking. The braking process is also completed in three modes. Friction braking and electromagnetic braking still work together; however, the torque value of friction braking and the torque value of electromagnetic braking are reduced. Friction braking stops working, and only an electromagnetic brake continues working. Both the friction braking and electromagnetic braking stop working, and the braking process is ended completely. According to the working mode, the working condition of friction braking can be controlled indirectly by controlling the electromagnetic braking, and the mode solves the problems that electromagnetic braking and friction braking work independently in the prior art, coordination control is complicated, different braking modes cannot be distinguished easily under different braking conditions, and unstabilized factors are brought to the system by braking force mutation in the mode switching process. The working mode is simple and feasible, easy and reliable to control, and quite suitable for small car braking systems.
Description
Technical field
The present invention relates to a kind of brake for car, particularly relate to the method for work of a kind of electromagnetic braking and frictional damping integrated brake device。
Background technology
The brake installed on current car is almost friction brake entirely, wherein in the majority with disk type friction brake。Its work process is: driver's brake pedal, improving oil circuit pressure by master cylinder, hydraulic circuit transmission brake pedal force, under hydraulic oil effect, piston in braking clamp body promotes brake pad to press to braking dish, is braked thus producing moment of friction。The source only one of which of braking moment in this braking technology scheme, the braking moment that namely brake pad produces with frictional disk extruding。Automobile is braked continually, brake pad will extrusion friction dish continually, this process can produce a large amount of harmful dust and brake noise, brake pad abrasion simultaneously also quickly, the life-span is short, and maintenance cost is high。Travelling or when long descent run on the urban road needing frequently braking, brake temperature rise is relatively big, produces " braking thermal failure " phenomenon sometimes, affects vehicle safety travel。Additionally this technical scheme only transmits brake pedal force by hydraulic circuit, there is response sluggishness, the shortcomings such as control accuracy is low, can not meet the requirement improving rapidly automobile braking force when brake hard。
Electromagnetic brake according to electromagnetic induction principle design, belongs to contactless braking, it is possible to effectively solve the problems such as brake dust, brake noise and brake hard response speed。In prior art, Chinese Patent Application No. is 201210131074.X, name is called in the scheme disclosed in " friction of a kind of double plate chip architecture with electromagnetism integrated arrestor " to adopt two braking dishes, and the first braking dish is used for frictional damping, and the second braking dish is used for electromagnetic braking。Chinese Patent Application No. is 201310626552.9, and name is called in the scheme disclosed in " a kind of vehicle electric magnetic brake and frictional damping integrated brake system " at brake disk surface subregion layout electromagnetic braking coil。Electromagnetic braking and frictional damping are only simple grouped together by the integrated braking technology scheme of both, and they, respectively as two independent brakes, control respectively, each work, and namely the size of electromagnetic system power and the size of friction brake force are irrelevant mutually。This brings a control problem, and namely electromagnetic system power and friction brake force can not be well matched with, and adapts to the damped condition of different speed different braking intensity。
Summary of the invention
For prior art Problems existing, the invention provides the method for work of a kind of electromagnetic braking and frictional damping integrated brake device。
The technical scheme is that the method for work of a kind of electromagnetic braking and frictional damping integrated brake device, including following mode of operation:
A) integrated brake device is in off position
When automobile is not braking, electromagnetic braking controller does not export the signal controlling electromagnetic brake work, coil no power, do not produce electromagnetic braking moment, torsion returns positive parts does not have moment loading, is not deformed, and coil base does not then rotate, screw rod does not have straight-line feed, it does not have frictional damping moment produces；
B) integrated brake device only has electromagnetic braking mode of operation
When the braking of automobile low speed and the driver amplitude that pushes down on the pedal is little and when pedal speed is slow, electromagnetic braking controller is by analyzing pedal displacement sensor, pedal acceleration transducer, vehicle speed sensor and wheel speed sensors, obtain target braking force square value, output controls the signal of electromagnetic brake work, now to pass into electric current less for coil, produce electromagnetic braking moment less, torsion returns positive parts and is deformed less, the angular displacement that coil base produces is less, and screw rod straight-line feed amount under coil base effect is little；The straight-line feed of screw rod promotes brake pad close to frictional disk, but is not enough to eliminate the space between brake pad and frictional disk, does not contact between brake pad and frictional disk, and frictional damping does not work, and now only has electromagnetic braking work；
C) integrated brake device is in electromagnetic braking and frictional damping cooperation pattern
When automobile high-speed braking or the driver amplitude that pushes down on the pedal is big or when pedal speed is fast, electromagnetic braking controller is by analyzing pedal displacement sensor, pedal acceleration transducer, vehicle speed sensor and wheel speed sensors, obtain target braking force square value, output controls the signal of electromagnetic brake work, now to pass into electric current bigger for coil, produce electromagnetic braking moment bigger, torsion returns positive parts and is deformed bigger, the angular displacement that coil base produces is relatively big, and screw rod straight-line feed amount under coil base effect is bigger；First the straight-line feed of screw rod eliminates the space between brake pad and frictional disk, then promotes brake pad extrusion friction dish, and frictional damping is started working, now electromagnetic braking and frictional damping cooperation；
D) integrated brake device terminates mode of braking one
After implementing braking, speed reduces, driver withdraws pedal, when withdrawing, pedal amplitude is little, electromagnetic braking controller is by analyzing pedal displacement sensor, pedal acceleration transducer, vehicle speed sensor and wheel speed sensors, obtain target braking force square value, output controls electromagnetic brake signal, the electric current that now coil passes into is reduced, reduction amplitude is little, and electromagnetic braking moment reduces by a small margin, and torsion returns positive parts and recovers deformation to original state, coil base rotates to initial position, and screw rod is less to the straight line amount of withdrawing of initial position under coil base effect；Extruding force between brake pad and frictional disk reduces by a small margin, and frictional damping moment reduces by a small margin, now without departing from contact, frictional damping and electromagnetic braking still cooperation between brake pad and frictional disk；
E) integrated brake device terminates mode of braking two
After implementing braking, speed reduces, driver withdraws pedal, when withdrawing pedal amplitude and being bigger, electromagnetic braking controller is by analyzing pedal displacement sensor, pedal acceleration transducer, vehicle speed sensor and wheel speed sensors, obtain target braking force square value, output controls electromagnetic brake signal, the electric current that now coil passes into is reduced, reduction amplitude is big, electromagnetic braking moment significantly reduces, torsion returns positive parts and recovers deformation to original state, coil base rotates to initial position, screw rod is bigger to the straight line amount of withdrawing of initial position under coil base effect；Extruding force between brake pad and frictional disk significantly reduces, and frictional damping moment significantly reduces, until disengaging between brake pad and frictional disk, friction brake quits work, and now only has electromagnetic brake to work on；
F) integrated brake device terminates mode of braking three
After implementing braking, speed reduces, driver withdraws pedal, when pedal withdraws initial position, electromagnetic braking controller is by analyzing pedal displacement sensor and pedal acceleration transducer, vehicle speed sensor, wheel speed sensors, obtaining target braking force square value is zero, output controls electromagnetic brake signal, now coil no longer passes into electric current, electromagnetic braking moment is reduced to zero, and torsion returns positive parts and recovers deformation, and coil base rotates to initial position, until returning to initial position, screw rod is for linear motion to initial position under coil base effect；Until returning to initial position, brake pad returns to initial position, and electromagnetic braking also quits work, and braking procedure is fully completed。
Further, a kind of electromagnetic braking and frictional damping integrated brake device, return positive parts, coil base, screw nut assembly, caliper, frictional disk including axletree, torsion；Described axletree one end is cased with torsion successively and returns positive parts, coil base, frictional disk；It is affixed by bolt with coil base that torsion goes back to positive parts one end, the other end is affixed with suspension, coil base faces the side of frictional disk and is evenly equipped with multiple electromagnetic brake stator around axletree, described electromagnetic brake stator is made up of iron core and coil, coil is wrapped on iron core equably, and iron core end face keeps certain interval with frictional disk；Nut in the circumferential end surfaces of coil base and screw nut assembly engages each other；Nut is limited by block can not axially movable, and one end of the screw rod on screw nut assembly is connected with caliper, and the circumferential end surfaces of frictional disk is between two brake pads of caliper。
Further, it is hollow shaft sleeve structure that described torsion returns positive parts, and hollow shaft sleeve two ends are respectively and fixedly connected with and connect coil base and suspension；Or it is torsion bar structure that described torsion returns positive parts, and torsion bar two ends are respectively and fixedly connected with coil base and suspension。
Further, described hollow shaft sleeve structure is divided into mid portion and two ends, and described mid portion adopts alloy spring steel to make, and two connect end and adopt non-elastic material to make, and can relatively rotate under two connection end portion's moment of torsion effects outside。
Further, described hollow shaft sleeve structure mid portion adopts 55Si2Mn or 50CrVA or 30W4Cr2VA alloy material to make。
Further, described coil base is processed into gear-like near the outer face of screw nut assembly, screw rod and nut cooperate, and coil base turns an angle so that nut rotates, and the screw rod doing rectilinear motion promotes the brake pad grip friction dish in caliper。
Further, the meshing gear of described coil base and nut forms fixed ratio geared transmission, and namely coil base and nut outer circumference surface are circle；Or the meshing gear of described coil base and nut forms variable ratio engaged transmission, and namely coil base and screw rod or nut outer circumference surface are the intermeshing irregular circle of change radius。
Further, also including described coil base after turning an angle, can block by limited device, restriction rotates further, and stopping means can adopt following two structure:
Affixed limited block in described coil base circumferential end surfaces, limited block can be pressed against stop-surface after coil base rotates to an angle, thus limiting coil matrix rotates further；
Described coil base circumferential end surfaces opens stopper slot, the affixed vehicle frame of limited block, be in stopper slot, coil base rotate to an angle after the stop of limited piece of stopper slot end face, thus limiting coil matrix rotates further。
The present invention has following technical effect that
1) method of work of described electromagnetic braking and frictional damping integrated brake device, brakes adds described integrated brake device, control frictional damping with electromagnetic braking whether to work and working strength, this braking operation method can be practised anti-locking brake function relatively simplely, and owing to system component is few, control simple, working stability, reduce the cost of brakes。
2) electromagnetic brake and friction brake return together with positive parts are closely connected with screw nut assembly by torsion, friction brake is indirectly controlled by controlling electromagnetic brake, solve electromagnetic braking and frictional damping in existing integrated arrestor to work alone, coordinate to control complexity, can not effectively distinguish braking mode response and the sudden change of mode handover procedure brake force under different braking operating mode, bring the problems such as unstable factor to system。Present configuration is simple, and Mechanical course is safe and reliable, controls simple, is highly suitable for pony car brakes。
3) frictional damping moment changes according to the size of electromagnetic braking moment, so that integrated brake device can just be operated in electromagnetic braking independent role pattern and electromagnetic braking, frictional damping synergy pattern without Electronic Control。Further, frictional damping moment can be automatically increased according to the needs of total braking force square, reduce, and makes integrated control for brake very simple, and brakes cost can be greatly reduced。
4) for different vehicles, it is possible to meet, by returning positive parts with the torsion changed in integrated brake device, the electromagnetic braking moment condition that startup friction brake is different。Require to start frictional damping when bigger braking moment, the torsion adopting bigger elastic modelling quantity returns positive parts, require to start frictional damping when less braking moment, the torsion adopting relatively low modulus of elasticity returns positive parts, and the structure of hollow shaft sleeve of the present invention and material just disclosure satisfy that the demand。
5) design of the meshing gear variable ratio transmission of coil base and nut can the partition characteristic of flexible electromagnetic braking moment and frictional damping moment；Can be designed that optimal allocation ratio, make wheel be in optimal slip ratio scope when braking, improve brake efficiency。
6) carry out, by stopping means, the extreme position that control coil matrix rotates, effectively control the maximum braking moment that electromagnetic braking and frictional damping integrated brake device produce, it is prevented that parts overload operation and damage。
Accompanying drawing explanation
Fig. 1 is electromagnetic braking and frictional damping integrated brake device installation diagram；
The torsion of Fig. 2 tube-in-tube structure returns positive section and cuts open figure；
Fig. 3 coil base schematic diagram；
Fig. 4 iron core schematic diagram；
Fig. 5 brakes controls process sketch；
Fig. 6 frictional damping moment and electromagnetic braking moment conditions figure；Curve 1 is linear relationship for frictional damping moment changing value and electromagnetic braking moment variations value, and curve 2 and curve 3 are frictional damping moment changing value and two kinds of situations that electromagnetic braking moment variations value is non-linear relation；
Fig. 7 control for brake flow chart；
The extreme position figure of Fig. 8 electromagnetic braking and frictional damping the first embodiment of integrated brake device；
The extreme position figure of Fig. 9 electromagnetic braking and frictional damping integrated brake device the second embodiment。
Description of reference numerals: 1, axletree, 2, torsion return positive parts, 3, coil base, 4, screw rod, 5, nut, 6, block, 7, piston, 8, braking clamp body, 9, brake pad, 10, iron core, 11, frictional disk, 12, bolt, 13, bolt, 14, bolt, 15, coil, 16, bearing, 17, limited block。
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described。
As Figure 1-4, this electromagnetic braking and frictional damping integrated brake device are by coil base 3, piston 7, braking clamp body 8, brake pad 9, iron core 10, frictional disk 11, coil 15 and bearing 16, and torsion returns positive parts 2, screw rod 4, nut 5, block 6。Axletree 1 one end is affixed with frictional disk 11, coil base 3 is supported on axletree by bearing 16, coil 15 is wrapped in iron core 10, iron core 10 is fixed on coil base 3 (material can adopt mild steel), caliper is fixed on suspension, caliper includes piston 7, braking clamp body 8 and brake pad 9, and in braking clamp body 8, brake fluid can promote brake pad pressing friction dish by extrusion piston。Coil base 3 is processed into gear-like near the outer face of screw rod 4 nut 5 assembly, and described torsion returns the affixed coil base 3 in positive parts 2 one end, the affixed suspension of the other end。Described screw rod 4 and nut 5 cooperate, and one rotates, and another does rectilinear motion, do the source that one end is brake pad 9 grip friction dish 11 clamping force of rectilinear motion。The affixed vehicle frame of block 6, restriction nut 5 moves axially。
During automobile brake, driver's brake pedal, through electronic-controlled installation, start electromagnetic brake, produce electromagnetic system power。Electromagnetic braking moment shows as the torque between frictional disk 11 and coil base 3, and this torque is mutual, the frictional disk 11 of rotation both can be forced to reduce rotating speed static coil base 3 can also be made to rotate。
The moment of reaction that coil base 3 is subject to is more than after a definite limitation, overcoming torsion to return the torsional moment of positive parts 2, turn an angle, coil base 3 rotates and drives nut 5 to rotate, can not move axially owing to nut 5 can only rotate, so the screw rod 4 cooperated with it does straight-line feed motion。4 one ends of screw rod promote caliper inner carrier 7 to move, and make brake pad 9 extrusion friction dish 11 provide the source of extruding force。One end of screw rod 4 on screw nut assembly is welded mutually with the piston 7 of caliper。Electromagnetic brake stator is affixed by bolt 14 and coil base 3。
As in figure 2 it is shown, this electromagnetic braking is that torsion returns positive parts 2 with one of vital part in frictional damping integrated brake device。It can be hollow shaft sleeve structure, and hollow shaft sleeve two ends are respectively and fixedly connected with and connect coil base 3 and suspension junction point, it is also possible to for torsion bar structure, torsion bar two ends are respectively and fixedly connected with coil base 3 and suspension junction point。Hollow shaft sleeve structure is divided into three sections, i.e. interlude and two ends, described mid portion and two ends are welded mutually, mid portion is stretch section, applies moment of torsion at both ends, then mid portion produces deformation, both ends produce relative angular displacement, described mid portion adopts alloy spring steel to make, and two connect end and adopt non-elastic material to make, and can relatively rotate under two connection end moment of torsion effects outside。Torsion returns positive parts 2 mid portion and 55Si2Mn or 50CrVA or 30W4Cr2VA alloy material can be adopted to make。End owing to connecting with suspension maintains static, and the end therefore connected with coil base 3 rotates。When the moment of torsion applied is less, and the end angular displacement that coil base 3 connects is just little；When the moment of torsion of applying is bigger, and the end angular displacement that coil base 3 connects is just big。
Electromagnetic braking cooperates with the screw rod 4 in frictional damping integrated brake device and nut 5 assembly。Gear-like is processed in nut 5 outer face, engages each other with coil base 3 outer face gear, and nut 5 can only rotate under block 6 limits, and when nut 5 rotates, screw rod 4 does rectilinear motion。
Screw rod 4 and nut 5 assembly do screw rod 4 or the nut 5 of rectilinear motion, it is made with cavity in braking clamp body 8, brake fluid is had in cavity, when screw rod 4 does rectilinear motion, promote the motion of braking clamp body 8 inner carrier, piston press brake fluid, brake fluid pressure raises, and then promotes brake pad 9 extrusion friction dish 11 by piston。
The quantity of described electromagnetic brake stator is 2,4,6 or 8, is uniformly distributed along coil base 3 axis and is fixed on coil base 3。
This electromagnetic braking and frictional damping integrated brake device coil matrix 3, after turning an angle, can block for limited piece 17, and restriction rotates further, and stopping means can adopt following two structure:
1, affixed limited block 17 in described coil base 3 circumferential end surfaces, limited block can be pressed against block 6 surface after coil base 3 rotates to an angle, thus limiting coil matrix 3 rotates (as shown in Figure 8) further。
2, driving stopper slot, the affixed vehicle frame of limited block 17 in described coil base 3 circumferential end surfaces, be in stopper slot, after coil base 3 rotates to an angle, stopper slot end face stops for limited piece 17, thus limiting coil matrix 3 rotates (as shown in Figure 9) further。
The further rotation of purpose of limiting coil matrix 3 is to set maximum formulation moment。After formulation moment exceedes certain numerical value, vehicle meeting locking, this is a kind of unstable unsafe damped condition, in order to avoid wheel lock up, sets a maximum braking force value。When brake force increases to maximum braking force, coil base 3 rotational angle reaches maximum, and now coil base 3 just limited device blocks, it is impossible to be further continued for rotating。Screw rod or nut cannot continue to do rectilinear motion, it is impossible to promote brake pad 9 extruding force to continue to increase。
The meshing gear of described coil base 3 and nut 5 forms fixed drive ratio, and namely coil base 3 and nut 5 outer circumference surface are circle；Or the meshing gear of described coil base 3 and nut 5 forms variable ratio, and namely coil base and screw rod or nut outer circumference surface are the intermeshing irregular circle of change radius。
There is fixed relationship in frictional damping moment changing value and electromagnetic braking moment variations value, it is possible to can also be non-linear relation for linear relationship。As shown in Figure 6。The homologous pair sexual relationship of fixed drive ratio, variable ratio correspondence non-linear relation。
What curve 1 represented is linear relationship。Being achieved in that the meshing gear of integrated brake device coil matrix and screw rod or nut makes fixed drive ratio, namely coil base and screw rod or nut outer circumference surface are circle, and frictional damping moment is linear change along with electromagnetic braking moment variations。
What curve 2 and curve 3 represented is non-linear relation。The meshing gear of described integrated brake device coil matrix and screw rod or nut makes variable ratio, and namely coil base and screw rod or nut outer circumference surface are the intermeshing irregular circle of change radius。
It is worth this fixed relationship by regulating frictional damping moment changing value and electromagnetic braking moment variations, it is possible to achieve frictional damping moment and electromagnetic braking moment optimal allocation ratio, is conducive to improving brake efficiency and stability。
As it is shown in figure 5, electromagnetic brake is made up of coil base 3, electromagnetic brake stator, frictional disk 11, friction brake is made up of caliper and frictional disk 11；Electromagnetic braking controller gathers the signal of pedal position sensor and acceleration transducer, vehicle speed sensor, wheel speed sensors, and then output control signal is to electromagnetic brake, and electromagnetic brake controls friction brake work further。
This electromagnetic braking is as follows with frictional damping integrated brake device work process:
When automobile is not braking, coil 15 no power, do not produce electromagnetic braking moment, torsion returns positive parts 2 does not have moment loading, is not deformed, and coil base 3 does not then rotate, and therefore screw rod 4 does not have straight-line feed, it does not have frictional damping moment produces。
When automobile low speed is braked, coil 15 electrical current is less, produce less electromagnetic braking moment, torsion returns positive parts 2 at less moment loading, producing less deformation, coil base 3 has less angular displacement, and screw rod 4 has less straight-line feed under coil base 3 acts on, this straight-line feed, for eliminating the space between brake pad 9 and frictional disk 11, so there is no frictional damping moment and produces。The not further brake pedal of driver, then mean that electromagnetic braking moment now is sufficient for braking requirement。
If the further brake pedal of driver, then mean that current electromagnetic braking moment is sufficient for braking requirement。Stepping on after braking steps on further, coil 15 electric current becomes big, and electromagnetic braking moment becomes big；Torsion returns positive parts 2 under the effect of moment, continue to be deformed, coil base 3 continues to increase angular displacement, screw rod 4 further does straight-line feed motion under coil base 3 acts on, now the space between brake pad 9 and frictional disk 11 eliminates, brake pad 9 starts extrusion friction dish 11, begins with frictional damping moment and produces。Driver continues brake pedal, then frictional damping moment continues to increase, until coil base 3 blocks for limited piece 17, it is impossible to being rotated further, frictional damping moment reaches the upper limit。
In braking procedure, when driver is not to brake pedal action, electromagnetic braking controller remains in and works without cessation。Analyzing GES and wheel speed signal, calculate output winding current value, the total braking force square that the electric current wherein exported produces can make wheel be maintained at optimal slip ratio scope, it is to avoid wheel-slip。
Under different driving cycles, making the total braking force square that wheel is maintained at optimal slip ratio scope have a maximum, when integrated arrestor is in and is operated in this value, frictional damping moment reaches the upper limit。The stopping means that the limiting coil matrix being achieved in that in integrated arrestor is rotated further blocks coil base, causes that screw rod cannot continue to press on brake pad extrusion friction dish, and namely frictional damping moment no longer increases。
Several different mode of operation of said apparatus is further described below in conjunction with Fig. 7。
Integrated brake device only has electromagnetic braking mode of operation
When automobile low speed (speed is in 0-20km/h) braking and the driver amplitude that pushes down on the pedal is little and when pedal speed is slow, electromagnetic braking controller is by analyzing pedal position sensor and acceleration transducer, vehicle speed sensor, wheel speed sensors, calculating obtains target braking force square, output controls electromagnetic brake coil electric current, coil 15 electrical current is less, produce less electromagnetic braking moment, torsion returns positive parts 2 at less moment loading, produce less deformation, coil base 3 has less angular displacement, screw rod 4 has less straight-line feed under coil base 3 acts on, this straight-line feed is for eliminating the space between brake pad 9 and frictional disk 11, so there is no frictional damping moment produce。The not further brake pedal of driver, then mean that electromagnetic braking moment now is sufficient for braking requirement, and whole process frictional damping moment does not work。
Integrated brake device electromagnetic braking and the equal mode of operation of frictional damping
When driver's brake pedal amplitude is big or pedal speed is fast or speed is higher (v is more than 20km/h), electromagnetic braking controller is by analyzing pedal position sensor and acceleration transducer, vehicle speed sensor, wheel speed sensors, calculating obtains target braking force square, output controls electromagnetic brake coil electric current, coil 15 electrical current is bigger, produce bigger electromagnetic braking moment, torsion returns positive parts 2 at bigger moment loading, produce bigger deformation, coil base 3 has bigger angular displacement, screw rod 4 has bigger straight-line feed under coil base 3 acts on, this straight-line feed exceedes the space distance between brake pad 9 and frictional disk 11, screw rod 4 continues feeding, promote brake pad 9 extrusion friction dish 11, produce frictional damping moment。Frictional damping and electromagnetic braking work simultaneously。
Integrated arrestor off position and end mode of braking
When automobile is not braking, coil 15 no power, do not produce electromagnetic braking moment, torsion returns positive parts 2 does not have moment loading, is not deformed, and coil base 3 does not then rotate, and therefore screw rod 4 does not have straight-line feed, it does not have frictional damping moment produces。
Integrated brake device terminates mode of braking one
After implementing braking, speed reduces, driver withdraws pedal, when withdrawing, pedal amplitude is little, electromagnetic braking controller is by analyzing pedal displacement sensor, pedal acceleration transducer, vehicle speed sensor and wheel speed sensors, obtain target braking force square value, output controls electromagnetic brake signal, the electric current that now coil 15 passes into is reduced, reduction amplitude is little, electromagnetic braking moment reduces by a small margin, torsion returns positive parts 2 and recovers deformation to original state, coil base 3 rotates to initial position, screw rod 4 is less to the straight line amount of withdrawing of initial position under coil base 3 acts on；Extruding force between brake pad 9 and frictional disk 11 reduces by a small margin, and frictional damping moment reduces by a small margin, now without departing from contact, frictional damping and electromagnetic braking still cooperation between brake pad 9 and frictional disk 11；
Integrated brake device terminates mode of braking two
After implementing braking, speed reduces, driver withdraws pedal, when withdrawing pedal amplitude and being bigger, electromagnetic braking controller is by analyzing pedal displacement sensor, pedal acceleration transducer, vehicle speed sensor and wheel speed sensors, obtain target braking force square value, output controls electromagnetic brake signal, the electric current that now coil 15 passes into is reduced, reduction amplitude is big, electromagnetic braking moment significantly reduces, torsion returns positive parts 2 and recovers deformation to original state, coil base 3 rotates to initial position, screw rod 4 is bigger to the straight line amount of withdrawing of initial position under coil base 3 acts on；Extruding force between brake pad 9 and frictional disk 11 significantly reduces, and frictional damping moment significantly reduces, until disengaging between brake pad 9 and frictional disk 11, friction brake quits work, and now only has electromagnetic brake to work on；
Integrated brake device terminates mode of braking three
After implementing braking, speed reduces, driver withdraws pedal, when pedal withdraws initial position, electromagnetic braking controller is by analyzing pedal displacement sensor and pedal acceleration transducer, vehicle speed sensor, wheel speed sensors, obtaining target braking force square value is zero, output controls electromagnetic brake signal, now coil 15 no longer passes into electric current, electromagnetic braking moment is reduced to zero, and torsion returns positive parts 2 and recovers deformation, and coil base 3 rotates to initial position, until returning to initial position, screw rod 4 is for linear motion to initial position under coil base 3 acts on；Until returning to initial position, brake pad 9 returns to initial position, and electromagnetic braking also quits work, and braking procedure is fully completed。
In describing the invention, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be the connection of two element internals。For the ordinary skill in the art, it is possible to concrete condition understands above-mentioned term concrete meaning in the present invention。
Claims (8)
1. the method for work of an electromagnetic braking and frictional damping integrated brake device, it is characterised in that include following mode of operation:
A) integrated brake device is in off position
When automobile is not braking, electromagnetic braking controller does not export the signal controlling electromagnetic brake work, coil (15) no power, do not produce electromagnetic braking moment, torsion returns positive parts (2) does not have moment loading, is not deformed, and coil base (3) does not then rotate, screw rod (4) does not have straight-line feed, it does not have frictional damping moment produces；
B) integrated brake device only has electromagnetic braking mode of operation
When the braking of automobile low speed and the driver amplitude that pushes down on the pedal is little and when pedal speed is slow, electromagnetic braking controller is by analyzing pedal displacement sensor, pedal acceleration transducer, vehicle speed sensor and wheel speed sensors, obtain target braking force square value, output controls the signal of electromagnetic brake work, now to pass into electric current less for coil (15), produce electromagnetic braking moment less, torsion returns positive parts (2) and is deformed less, the angular displacement that coil base (3) produces is less, the screw rod (4) straight-line feed amount under coil base (3) acts on is little；The straight-line feed of screw rod (4) promotes brake pad (9) close to frictional disk (11), but it is not enough to eliminate the space between brake pad (9) and frictional disk (11), do not contact between brake pad (9) and frictional disk (11), frictional damping does not work, and now only has electromagnetic braking work；
C) integrated brake device is in electromagnetic braking and frictional damping cooperation pattern
When automobile high-speed braking or the driver amplitude that pushes down on the pedal is big or when pedal speed is fast, electromagnetic braking controller is by analyzing pedal displacement sensor, pedal acceleration transducer, vehicle speed sensor and wheel speed sensors, obtain target braking force square value, output controls the signal of electromagnetic brake work, now to pass into electric current bigger for coil (15), produce electromagnetic braking moment bigger, torsion returns positive parts (2) and is deformed bigger, the angular displacement that coil base (3) produces is bigger, the screw rod (4) straight-line feed amount under coil base (3) acts on is bigger；The straight-line feed of screw rod (4) first eliminates the space between brake pad (9) and frictional disk (11), then brake pad (9) extrusion friction dish (11) is promoted, frictional damping is started working, now electromagnetic braking and frictional damping cooperation；
D) integrated brake device terminates mode of braking one
After implementing braking, speed reduces, driver withdraws pedal, when withdrawing, pedal amplitude is little, electromagnetic braking controller is by analyzing pedal displacement sensor, pedal acceleration transducer, vehicle speed sensor and wheel speed sensors, obtain target braking force square value, output controls electromagnetic brake signal, the electric current that now coil (15) passes into is reduced, reduction amplitude is little, electromagnetic braking moment reduces by a small margin, torsion returns positive parts (2) and recovers deformation to original state, coil base (3) rotates to initial position, screw rod (4) is less to the straight line amount of withdrawing of initial position under coil base (3) acts on；Extruding force between brake pad (9) and frictional disk (11) reduces by a small margin, frictional damping moment reduces by a small margin, now without departing from contact, frictional damping and electromagnetic braking still cooperation between brake pad (9) and frictional disk (11)；
E) integrated brake device terminates mode of braking two
After implementing braking, speed reduces, driver withdraws pedal, when withdrawing pedal amplitude and being bigger, electromagnetic braking controller is by analyzing pedal displacement sensor, pedal acceleration transducer, vehicle speed sensor and wheel speed sensors, obtain target braking force square value, output controls electromagnetic brake signal, the electric current that now coil (15) passes into is reduced, reduction amplitude is big, electromagnetic braking moment significantly reduces, torsion returns positive parts (2) and recovers deformation to original state, coil base (3) rotates to initial position, screw rod (4) is bigger to the straight line amount of withdrawing of initial position under coil base (3) acts on；Extruding force between brake pad (9) and frictional disk (11) significantly reduces, frictional damping moment significantly reduces, until disengaging between brake pad (9) and frictional disk (11), friction brake quits work, and now only has electromagnetic brake to work on；
F) integrated brake device terminates mode of braking three
After implementing braking, speed reduces, driver withdraws pedal, when pedal withdraws initial position, electromagnetic braking controller is by analyzing pedal displacement sensor and pedal acceleration transducer, vehicle speed sensor, wheel speed sensors, obtaining target braking force square value is zero, output controls electromagnetic brake signal, now coil (15) no longer passes into electric current, electromagnetic braking moment is reduced to zero, torsion returns positive parts (2) and recovers deformation, coil base (3) rotates to initial position, until returning to initial position, screw rod (4) is for linear motion to initial position under coil base (3) acts on；Until returning to initial position, brake pad (9) returns to initial position, and electromagnetic braking also quits work, and braking procedure is fully completed。
2. the method for work of a kind of electromagnetic braking according to claim 1 and frictional damping integrated brake device, it is characterized in that, described electromagnetic braking is with frictional damping integrated brake device includes axletree (1), torsion returns positive parts (2), coil base (3), screw nut assembly, caliper and frictional disk (11)；Described axletree (1) one end is cased with torsion successively and returns positive parts (2), coil base (3), frictional disk (11)；It is affixed by bolt with coil base (3) that torsion goes back to positive parts (2) one end, the other end is affixed with suspension, coil base (3) faces the side of frictional disk (11) and is evenly equipped with multiple electromagnetic brake stator around axletree (1), described electromagnetic brake stator is made up of iron core (10) and coil (15), coil (15) is wrapped on iron core (10) equably, and iron core (10) end face keeps certain interval with frictional disk (11)；Nut (5) in the circumferential end surfaces of coil base (3) and screw nut assembly engages each other；Nut (5) is limited by block (6) can not be axially movable, one end of screw rod (4) on screw nut assembly is connected with caliper, and the circumferential end surfaces of frictional disk (11) is positioned between two brake pads (9) of caliper。
3. the method for work of a kind of electromagnetic braking according to claim 2 and frictional damping integrated brake device, described torsion returns positive parts (2) for hollow shaft sleeve structure, and hollow shaft sleeve two ends are respectively and fixedly connected with coil base (3) and suspension；Or it is torsion bar structure that described torsion returns positive parts (2), torsion bar two ends are respectively and fixedly connected with coil base (3) and suspension。
4. the method for work of a kind of electromagnetic braking according to claim 3 and frictional damping integrated brake device, described hollow shaft sleeve structure is divided into mid portion and two ends, described mid portion adopts alloy spring steel to make, two connect end and adopt non-elastic material to make, and can relatively rotate under two connection end portion's moment of torsion effects outside。
5. the method for work of a kind of electromagnetic braking according to claim 4 and frictional damping integrated brake device, described hollow shaft sleeve structure mid portion adopts 55Si2Mn or 50CrVA or 30W4Cr2VA alloy material to make。
6. the method for work of a kind of electromagnetic braking according to claim 2 and frictional damping integrated brake device, described coil base (3) is processed into gear-like near the outer face of screw nut assembly, screw rod (4) and nut (5) cooperate, coil base (3) turns an angle so that nut (5) rotates, and the screw rod (4) doing rectilinear motion promotes brake pad (9) the grip friction dish (11) in caliper。
7. the method for work of a kind of electromagnetic braking according to claim 2 and frictional damping integrated brake device, the meshing gear of described coil base (3) and nut (5) forms fixed ratio geared transmission, and namely coil base (3) and nut (5) outer circumference surface are circle；Or the meshing gear of described coil base (3) and nut (5) forms variable ratio engaged transmission, and namely coil base (3) and nut (5) outer circumference surface are the intermeshing irregular circle of change radius。
8. the method for work of a kind of electromagnetic braking according to claim 2 and frictional damping integrated brake device, also include described coil base (3) after turning an angle, blocking by limited device, limit it and rotate further, stopping means can adopt following two structure:
Affixed limited block (17) in described coil base (3) circumferential end surfaces, limited block (17) can be pressed against block (6) surface after coil base (3) rotate to extreme position, thus limiting coil matrix (3) rotates further；
Described coil base (3) circumferential end surfaces opens stopper slot, limited block (17) affixed vehicle frame, it is in stopper slot, after coil base (3) rotates to an angle, limited piece of stopper slot end face (17) stops, thus limiting coil matrix (3) rotates further。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610027625.6A CN105691213B (en) | 2016-01-15 | 2016-01-15 | A kind of electromagnetic braking and the method for work of friction catch integrated brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610027625.6A CN105691213B (en) | 2016-01-15 | 2016-01-15 | A kind of electromagnetic braking and the method for work of friction catch integrated brake device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105691213A true CN105691213A (en) | 2016-06-22 |
| CN105691213B CN105691213B (en) | 2018-04-03 |
Family
ID=56227446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610027625.6A Active CN105691213B (en) | 2016-01-15 | 2016-01-15 | A kind of electromagnetic braking and the method for work of friction catch integrated brake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105691213B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105936262A (en) * | 2016-07-12 | 2016-09-14 | 桂林思超汽车科技有限公司 | Electrically-controlled auxiliary braking method and device |
| CN106080566A (en) * | 2016-06-04 | 2016-11-09 | 浙江大学 | Automobile composite braking method and apparatus |
| CN106274849A (en) * | 2016-08-29 | 2017-01-04 | 安徽工程大学 | Vehicle brake system |
| CN108583554A (en) * | 2018-05-23 | 2018-09-28 | 江苏大学 | It is a kind of that braking method is integrated with friction based on the electromagnetism for mixing theory |
| CN113635878A (en) * | 2021-08-16 | 2021-11-12 | 盐城工学院 | Composite braking system of electric automobile |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2274109A (en) * | 1940-02-09 | 1942-02-24 | Harry H Roe | Electrical brake control mechanism |
| JP2009138810A (en) * | 2007-12-04 | 2009-06-25 | Toyota Motor Corp | Disc brake device |
| CN201961946U (en) * | 2011-02-28 | 2011-09-07 | 沈阳博林特电梯股份有限公司 | Permanent magnet synchronous motor direct drive and brake control device for escalator |
| CN102691737A (en) * | 2012-05-02 | 2012-09-26 | 江苏大学 | Friction and electromagnetism integrated brake with double disk structure |
| CN103629272A (en) * | 2013-12-02 | 2014-03-12 | 江苏大学 | Electromagnetic brake and friction brake integrated system for vehicle |
| CN104648164A (en) * | 2015-02-04 | 2015-05-27 | 江苏大学 | Composite anti-lock brake system for electric automobile and brake control method |
-
2016
- 2016-01-15 CN CN201610027625.6A patent/CN105691213B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2274109A (en) * | 1940-02-09 | 1942-02-24 | Harry H Roe | Electrical brake control mechanism |
| JP2009138810A (en) * | 2007-12-04 | 2009-06-25 | Toyota Motor Corp | Disc brake device |
| CN201961946U (en) * | 2011-02-28 | 2011-09-07 | 沈阳博林特电梯股份有限公司 | Permanent magnet synchronous motor direct drive and brake control device for escalator |
| CN102691737A (en) * | 2012-05-02 | 2012-09-26 | 江苏大学 | Friction and electromagnetism integrated brake with double disk structure |
| CN103629272A (en) * | 2013-12-02 | 2014-03-12 | 江苏大学 | Electromagnetic brake and friction brake integrated system for vehicle |
| CN104648164A (en) * | 2015-02-04 | 2015-05-27 | 江苏大学 | Composite anti-lock brake system for electric automobile and brake control method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106080566A (en) * | 2016-06-04 | 2016-11-09 | 浙江大学 | Automobile composite braking method and apparatus |
| CN105936262A (en) * | 2016-07-12 | 2016-09-14 | 桂林思超汽车科技有限公司 | Electrically-controlled auxiliary braking method and device |
| CN105936262B (en) * | 2016-07-12 | 2019-01-11 | 桂林思超汽车科技有限公司 | Electric-control auxiliary brake method and device |
| CN106274849A (en) * | 2016-08-29 | 2017-01-04 | 安徽工程大学 | Vehicle brake system |
| CN108583554A (en) * | 2018-05-23 | 2018-09-28 | 江苏大学 | It is a kind of that braking method is integrated with friction based on the electromagnetism for mixing theory |
| CN113635878A (en) * | 2021-08-16 | 2021-11-12 | 盐城工学院 | Composite braking system of electric automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105691213B (en) | 2018-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105691213A (en) | Working method for integrated braking device with electromagnetic braking and friction braking | |
| CN105673731B (en) | A kind of electromagnetic braking and friction catch integrated brake device | |
| US11268586B2 (en) | Brake using magnetorheological transmission and brake-by-wire | |
| WO2018120786A1 (en) | Drive-by-wire brake acting through motor in combination with magnetostriction | |
| JP6763880B2 (en) | Methods for providing braking force in a vehicle, closed-loop or open-loop controllers, and vehicles | |
| KR101960114B1 (en) | Actuator system and operating method for an actuator system | |
| JP2009173082A (en) | Brake system | |
| CN104691747B (en) | Aircraft electric braking device and method | |
| CN102265053A (en) | Brake device for in-wheel motor | |
| CN109538662A (en) | A kind of electromechanical braking system braking executive device | |
| KR20180047998A (en) | electronic parking brake system and control method thereof | |
| CN204937125U (en) | A kind of electronic brake system | |
| CN109114134A (en) | A kind of toggle link boosting-type electromechanical brake | |
| CN107269741B (en) | A kind of brake system of car using electric operator | |
| CN106274870A (en) | A kind of electromechanical brake booster system | |
| CN202707879U (en) | Electronic wedge drum brake | |
| CN202006785U (en) | Power-driven intelligent braking system | |
| CN208858818U (en) | A kind of electromechanical braking system braking executive device | |
| CN111779774A (en) | Automobile disc brake | |
| CN105128846A (en) | Electronic parking braking system and parking control method thereof | |
| JP5556861B2 (en) | Brake device | |
| CN116146625A (en) | Method for maintaining gap between friction plate and brake disc of electromechanical brake | |
| CN103057427B (en) | Magneto-rheological hydraulic brake executing device for electric vehicles | |
| CN209146180U (en) | A kind of toggle link boosting-type electromechanical brake | |
| KR20130102967A (en) | Epb driving coltrol method |
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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210609 Address after: No. 159, Chengjiang Middle Road, Jiangyin City, Wuxi City, Jiangsu Province Patentee after: Jiangyin Intellectual Property Operation Co., Ltd Address before: Zhenjiang City, Jiangsu Province, 212013 Jingkou District Road No. 301 Patentee before: JIANGSU University |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 214400 room 506-1, No. 18, Haigang Road, Jiangyin City, Wuxi City, Jiangsu Province Patentee after: Jiangyin Intellectual Property Operation Co., Ltd Address before: No. 159, Chengjiang Middle Road, Jiangyin City, Wuxi City, Jiangsu Province Patentee before: Jiangyin Intellectual Property Operation Co., Ltd |