CN104482080B - Electromagnetic and friction integrated brake system and control method thereof - Google Patents

Electromagnetic and friction integrated brake system and control method thereof Download PDF

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Publication number
CN104482080B
CN104482080B CN201410647525.4A CN201410647525A CN104482080B CN 104482080 B CN104482080 B CN 104482080B CN 201410647525 A CN201410647525 A CN 201410647525A CN 104482080 B CN104482080 B CN 104482080B
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China
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brake
friction
electromagnetic
electromagnetic brake
braking
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CN201410647525.4A
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Chinese (zh)
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CN104482080A (en
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何仁
涂琨
顾晓丹
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江苏大学
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Abstract

The invention provides an electromagnetic and friction integrated brake system and a control method thereof. The electromagnetic and friction integrated brake system comprises a friction brake, an electromagnetic brake, a permanent magnet generator, a vehicle-mounted battery and an integrated controller. The inside friction disk and the outside friction disk of the disk-type friction brake are manufactured separately and connected by use of a bolt. The electromagnetic brake is of a rotary drum type and composed of an electromagnetic brake stator and a rotor for generating electrical vortex; the electromagnetic brake stator is located between the inside friction disk and the outside friction disk and fixedly connected with a steering joint support or suspension. The permanent magnet generator is located between the electromagnetic brake and the outside friction disk, and comprises a permanent magnet and a generator stator; the generator stator is connected with the electromagnetic brake stator by use of a bolt. The electromagnetic and friction integrated brake system has the advantages that the frequency of use of the friction brake is reduced, the heat of the brake system is scattered, the stability of the braking efficiency of the vehicle is improved, partial braking energy is recovered, and the braking noise is reduced and the consumption of energy of the whole vehicle during running is also reduced.

Description

Electromagnetism and friction integrated brake system and control method thereof
Technical field
The invention belongs to automobile brake field, a kind of electromagnetism with energy recovery function and friction integrated brake system And control method.
Background technology
The main flow brakes installed on present stage car is to transmit brake pedal force by hydraulic circuit, thus controls disk-type friction Brake is braked.Driver's brake pedal, improves oil circuit pressure by master cylinder, under hydraulic oil effect, Piston in braking clamp body promotes brake block to press to brake disc, and the friction moment that brake pad produces with brake disc carrys out braking vehicle.This Plant the extruding of the source only one of which of braking moment, i.e. brake pad and frictional disk in technical scheme and produce braking moment, the most frequently Ground braking can produce a large amount of harmful dust and brake noise, brake pad abrasion simultaneously the most quickly, the life-span is short, and maintenance cost is high. Travelling on the urban road needing frequently braking or during at long descent run, brake temperature rise is relatively big, can produce " braking heat Lost efficacy " phenomenon, affect vehicle safety travel.The most this technical scheme only transmits brake pedal force by hydraulic circuit, deposits In response sluggishness, the shortcomings such as control accuracy is low, the requirement improving rapidly automobile braking force can not be met when brake hard.
Energy-saving and emission-reduction are big themes of current automobile industry development, at the automobile that urban road travels, the energy dissipated because of braking Amount reaches the 50% of Automobile drive total energy consumption sometimes, and the recycling of braking energy is necessary.The automobile brake used at present Energy regeneration technology is one electromotor of layout on car transmissions, and when automobile brake, the wheel of rotation drives power train Electrical power generators in system, to charging on-vehicle battery, reclaim by this method braking energy be also employed at present electric automobile and On mixed power electric car.
According to electromagnetic induction principle design electromagnetic brake, belong to automatically controlled contactless braking, can effectively solve brake dust, The problems such as brake noise and brake hard response speed.In prior art, Chinese Patent Application No. is 201210131074.X, name It is referred to as in the scheme disclosed in " friction of a kind of double plate chip architecture and electromagnetism integrated arrestor " using two brake discs, the first system Moving plate is used for frictional damping, and the second brake disc is used for electromagnetic braking.This Integrated Solution brake axial dimension is the biggest, it is impossible to peace Being contained in the wheel narrow space of ordinary passenger car, practicality is little.Chinese Patent Application No. is 201310626552.9, name It is referred to as in the scheme disclosed in " a kind of vehicle electric magnetic brake and frictional damping integrated brake system " at brake disk surface subregion cloth Putting electromagnetic braking coil, this solution integration brake axial dimension is the biggest, is affected the individual of solenoid by position Seldom, electromagnetic system power is less for number.Both the above scheme is all by integrated arrestor, automobile kinetic energy to be converted into thermal energy consumption to dissipate, Do not carry out energy regenerating utilization.In both schemes, the friction surface of frictional damping is also that electromagnetic braking produces electricity whirlpool simultaneously The surface of stream.When brake disc uses abrasion obvious for a long time, electromagnetic brake coil and brake disc produce current vortex Gap between surface will increase, and electromagnetic system power will be obviously reduced.It reduce the brake efficiency of integrated arrestor.
Summary of the invention
For Shortcomings in prior art, the invention provides a kind of compact conformation, there is the electromagnetism of braking energy recovering function Braking and frictional damping integrated system and control method thereof.The present invention, by solenoid radial arrangement, is integrated in inside brake disc, Reduce the axial dimension of integrated arrestor so that it is the layout on passenger car is the most practical;Brake power recovering device i.e. permanent magnetism Electromotor, is converted into electric energy by automobile kinetic energy, provides energy by rectification, filtering, voltage stabilizing process latter aspect to electromagnetic brake Amount source, on the other hand charges to vehicular power-bottle, is stored by energy.This energy recycle device had both reclaimed partial brake energy Amount, beneficially car load is energy-conservation, provides again partial brake moment, improves brake efficiency.
The present invention realizes above-mentioned technical purpose by techniques below means.
A kind of electromagnetism and friction integrated brake system, including friction brake, electromagnetic brake, magneto, vehicular power-bottle Pedal signal sensor, energy storage pressure sensor, Wheel cylinder pressure sensors, vehicle speed sensor, speed probe and integrated control Device processed, described friction brake includes inboard friction dish, outboard friction dish, braking clamp body, brake-caliper support and brake pad, institute State outboard friction dish and there is abrasive end face and the great circle side face vertical with abrasive end face and roundlet side face, described great circle side face and inner side Frictional disk is bolted to connection, and described outboard friction dish is affixed with wheel rim, and described braking clamp body is stuck in inboard friction dish with outer On the frictional disk of side and be fixedly connected on brake-caliper support, the relative inner of braking clamp body connects brake pad;Described electromagnetic brake Electromagnetic brake stator between inboard friction dish and outboard friction dish, affixed with knuckle support or suspension;Described forever Magnetic generator is between electromagnetic brake and outboard friction dish, and including permanent magnet and generator unit stator, described permanent magnet is nested in On support, the small circumference inner surface with outboard friction dish is connected, and described generator unit stator is connected with electromagnetic brake stator by bolt; Pedal signal sensor, energy storage pressure sensor, Wheel cylinder pressure sensors, vehicle speed sensor, speed probe are all with integrated Controller connect, described integrated manipulator according to pedal signal sensor, energy storage pressure sensor, Wheel cylinder pressure sensors, Vehicle speed sensor, the signal of speed probe control friction brake, electromagnetic brake and the unlatching of magneto and Guan Bi, The outfan of magneto is connected with the input of electromagnetic brake and the input of vehicular power-bottle respectively, and vehicular power-bottle is electromagnetism Brake provides power supply.
Further, electromagnetic brake stator includes electromagnetic brake stator base, electromagnetic brake iron core and electromagnetic brake line Circle, described electromagnetic brake iron core is wound with electromagnetic brake coil and is fixed on electromagnetic brake stator base.
Further, electromagnetic brake iron core is 8, and radial distribution is fixed on electromagnetic brake stator base.
Further, electromagnetic brake iron core top is arc-shaped, with the gap on the big circumference surface of outboard friction dish is 1.0~1.5mm.
Further, generator unit stator includes generator unit stator matrix, generator iron-core and generator coil, described electromotor ferrum On core, uniform winding has generator coil and radially distributed is fixed on generator unit stator matrix, described generator unit stator matrix It is connected with electromagnetic brake stator base.
Further, generator iron-core top is arc-shaped, is 1.0~1.5mm with the gap of permanent magnet.
Further, the abrasive end face of inboard friction dish and outboard friction dish uses high-abrasive material, in the big circumference of outboard friction dish Surface is copper-clad.
Further, permanent magnet is made up of 12 permanent magnets, is nested on plastic stent, described plastic stent and outboard friction dish Small circumference inner surface fixing connect.
A kind of electromagnetism and the integrated brake control method that rubs, comprise the following steps:
The brake force of S1: pedal signal sensor detection pedal, the pressure of the brake fluid at energy storage pressure sensor detection accumulator Power, the pressure of brake fluid at Wheel cylinder pressure sensors detection wheel cylinder, the working speed of speed probe detection automotive wheel, speed The speed of sensor detection running car;
S2: integrated manipulator receives pedal signal sensor, energy storage pressure sensor, Wheel cylinder pressure sensors, speed sensing The signal that device and speed probe detect, processes selection by analysis and opens not braking pattern, low speed according to the signal detected Braking mode, high speed braking mode or emergency brake modes;
When integrated manipulator does not receives pedal sensor signal, opening not braking pattern, integrated manipulator controls frictional damping Wheel cylinder hydraulic pressure valve in system cuts out, and controls electromagnetic brake coil no power, controls generator coil and electromagnetic brake and car Two electrical switches carrying storage battery connection all disconnect;
When after the signal that integrated manipulator receives pedal signal sensor and speed probe, and when the working speed of wheel is low During speed, integrated manipulator controls friction brake and magneto does not works, and calculates braking according to the GES gathered Moment, control electromagnetic brake coil size of current, thus control electromagnetic system power size;
When after the signal that integrated manipulator receives pedal pressing force sensor and speed probe, and when the working speed of wheel be height During speed signal, integrated manipulator is also turned on magneto and electromagnetic brake, and the voltage of electromotor output is by rectification, filter Powering to electromagnetic brake through electrical switch after ripple, voltage stabilizing, unnecessary electric energy stores in vehicular power-bottle, in electromotor output When electric energy is not enough to supply electromagnetic brake use, vehicular power-bottle is to electromagnetic brake supplementary power, when motor braking power and electromagnetism When brake force sum does not reaches target braking force, integrated manipulator is opened friction brake and controls the holding of friction brake brake force Constant, the demand of total braking force is ensured by the size adjusting electromagnetic brake coil electric current;
When integrated manipulator receives the emergency brake signal of pedal signal sensor, integrated manipulator is to keep wheel skid rate 20% for controlling target, calculate friction brake force, electromagnetic braking according to GES, brake pedal signal and tach signal Power and motor braking power undertake the scale of total braking force, determine the size to electromagnetic brake output electric current according to result of calculation, When the vehicle wheel rotational speed that integrated manipulator detects reaches magneto working speed, connect magneto to electromagnetic brake Between electrical switch, the size of current needed for voltage signal that integrated arrestor exports according to magneto and electromagnetic brake Judge whether to need to connect electrical switch, make vehicular power-bottle to electromagnetic brake supplementary power.
The invention has the beneficial effects as follows:
1, magneto is integrated on friction brake by the present invention, makes automobile part kinetic energy when braking can be converted into electric energy Store;And electromotor operationally can provide partial brake moment, improves brake efficiency.
2, electromagnetic brake is integrated between the frictional disk of inner and outer, solenoid radial distribution, and this structure is greatly reduced The axial dimension of integrated arrestor so that it is be easier to wheel space narrow and small on passenger car and arrange.
3, during integrated arrestor work, on the current vortex that electromagnetic brake produces periphery between frictional disk, i.e. heat produces On the circumferential surface, and the heat of friction brake produce on the end face of inner side and outer side frictional disk, it is achieved that brake heat divides Stream, it is to avoid thermal failure.
4, the coil of electromagnetic brake is radial arrangement, and when brake axial float, coil end face is to rotating between conductor Size of gaps will not become, and improves the stability of braking moment.
The rubbing surface on the surface and frictional damping that 5, produce current vortex in electromagnetic braking is not shared, and such frictional disk can be selected High-abrasive material, the inner surface producing current vortex can apply copper, increase conductive capability, improve electromagnetic braking moment.Due to electromagnetic system Dynamic and frictional damping does not share same card, when, after frictional disk surface wear, the gap of electromagnetic brake coil to conductor is constant, and electricity Magnetic brake power is not by the effect of attrition of frictional disk.
6, under different braking requirement, can rationally select friction brake and the independent role of electromagnetic brake or jointly make With, greatly reduce the use frequency of friction brake, improve the life-span of brake pad, reduce the maintenance cost of friction brake.
7, integrated arrestor can accurately control the size of brake force, is conducive to extending actively and passively security function, such as ABS, ESP, TCS etc..
Accompanying drawing explanation
Fig. 1 is the structure chart of electromagnetism of the present invention and frictional damping integrated system.
Fig. 2 is outboard friction dish of the present invention and the structural representation of permanent magnet.
Fig. 3 is outboard friction dish of the present invention and the right view of permanent magnet.
Fig. 4 is the structural scheme of mechanism of electromagnetic brake of the present invention.
Fig. 5 is generator stator structure schematic diagram of the present invention.
Fig. 6 is generator permanent magnet body of the present invention and plastic bracket structure schematic diagram.
Fig. 7 is electromagnetic braking of the present invention and frictional damping integrated system control principle drawing.
Description of reference numerals is as follows:
1-inboard friction dish, 2-outboard friction dish, 3-electromagnetic brake iron core, 4-electromagnetic brake stator base, 5-electromotor is fixed Subbase body, 6-permanent magnet, 7-braking clamp body, 8-brake-caliper support, 9-brake pad, 10-bolt, 11-copper-clad, 12-electromagnetic system Dynamic device coil, 13-generator iron-core, 14-generator coil, 15-plastic stent.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is not limited to This.
Embodiment 1
As it is shown in figure 1, the electromagnetism of the present embodiment and frictional damping integrated system include friction brake, electromagnetic brake, permanent magnetism Electromotor, vehicular power-bottle, pedal signal sensor, energy storage pressure sensor, Wheel cylinder pressure sensors, vehicle speed sensor, Speed probe and integrated manipulator, friction brake includes deviating from the inboard friction dish 1 of wheel, the outboard friction of close wheel Dish 2, braking clamp body 7, brake-caliper support 8 and brake pad 9, described outboard friction dish 2 has abrasive end face and and abrasive end face Two concentric peripheries of vertical size, wherein great circle side face connects with inboard friction dish 1, as shown in Figures 2 and 3.In The abrasive end face of side frictional disk 1 and outboard friction dish 2 uses high-abrasive material, to improve the service life of frictional disk.Rub in interior outside Wiping dish is separately manufactured, and be uniformly distributed along the circumference on inboard friction dish 18 dormant bolt holes, makes the not prominent friction dish cart of attaching nut Face, the great circle side face of outboard friction dish 2 has 8 bolts hole, by bolt 10 with interior with inboard friction valve snail keyhole corresponding position Side frictional disk 1 connects, and outboard friction dish 2 is affixed with wheel rim, makes frictional disk follow wheel synchronous rotary.Braking inlay 7 is stuck in On the great circle side face of inboard friction dish 1 and outboard friction dish 2 and be fixedly connected on brake-caliper support 8, in the phase of braking inlay 7 Inner side is connected and has brake pad 9, braking clamp body 7 and brake-caliper support 8 and traditional braking clamp body and brake-caliper support shape phase With, except for the difference that its width is widened along with the increase of frictional disk width.
Electromagnetic brake is drum-type, is made up of the rotor of electromagnetic brake stator and generation current vortex.Outside in the present embodiment The inner surface of the great circle side face of frictional disk 2 is the rotor of electromagnetic brake, produces electricity when outboard friction dish 2 is with vehicle wheel rotation Eddy current, thus produce electromagnetic system power.Owing to the current vortex of electromagnetic brake generation is on the great circle side face of outside frictional disk 2, And the heat of friction brake produces on the end face of inboard friction dish and outboard friction dish, it is achieved that brake heat shunts, and keeps away Exempt from heat aging.Inner surface at the great circle side face of outside frictional disk 2 increases copper-clad 11, increases conductive capability, improves electromagnetic system Kinetic moment.Owing to deceleration of electrons and frictional damping do not share same card, when after frictional disk surface wear, the electromagnetism of electromagnetic brake Brake coil 12 is constant to the gap of copper-clad 11, and electromagnetic system power is not by the effect of attrition of frictional disk, thus improves electricity The stability of magnetic brake moment.Electromagnetic brake stator includes electromagnetic brake stator base 4, electromagnetic brake iron core 3 and electricity Magnetic brake coil 12, as shown in Figure 4.Electromagnetic brake stator base 4 be positioned at inboard friction dish 1 and outboard friction dish 2 it Between, affixed with knuckle support or suspension, by bolt radial arrangement in the circumferential end surfaces of electromagnetic brake stator base 4 The electromagnetic brake iron core 3 of 8 arcs, on electromagnetic brake iron core 3, uniform winding has electromagnetic brake coil 12.Electromagnetism Brake iron core 3 top is arc-shaped, matches with the big circumference surface of outboard friction dish 2, and both gaps are 1.0~1.5mm, excesssive gap can increase magnetic resistance thus weaken magnetic field force, when gap is too small, produces the outboard friction dish 2 of current vortex Big circumference inner surface expanded by heating can contact with electromagnetic brake coil 12.Owing to electromagnetic brake coil 12 is along electromagnetic braking Device stator base 4 radial arrangement, when electromagnetic brake axial float, electromagnetic brake coil 12 end face to copper-clad 16 it Between size of gaps will not change, thus improve the stability of electromagnetic braking moment.Simultaneously as electromagnetic brake is integrated in Between inboard friction dish 1 and outboard friction dish 2, it is greatly reduced the axial dimension of integrated arrestor so that it is be easier to riding Wheel space narrow and small on car is arranged.
Magneto is between electromagnetic brake and outboard friction dish 2, including permanent magnet 6 and generator unit stator, permanent magnet 6 are made up of 12 permanent magnets, are nested in plastic stent 15, and plastic stent 15 is by the small circumference of gluing with outboard friction dish 2 Inner surface is fixing to be connected, and as shown in Figure 6, generator unit stator includes generator unit stator matrix 5, generator iron-core 11 and electromotor Coil 14, generator unit stator matrix 5 is connected with electromagnetic brake stator base 4 by bolt, on generator iron-core 13 uniformly Being wound with generator coil 14, radially distributed on generator unit stator matrix 5, the top of generator iron-core 13 is circular arc, It is 1.0~1.5mm with the gap of permanent magnet 6.
As it is shown in fig. 7, the input of the integrated manipulator of the present embodiment and pedal signal sensor, energy storage pressure sensor, Wheel cylinder pressure sensors, vehicle speed sensor and speed probe connect, the outfan of integrated manipulator respectively with friction brake, The input of electromagnetic brake and magneto connects, the outfan of magneto also with input and the car of electromagnetic brake The input carrying storage battery connects, and the outfan of vehicular power-bottle is connected with the input of electromagnetic brake.
Under the control of integrated manipulator, integrated arrestor has several working ways.Integrated arrestor is according to the signal choosing detected Select the not braking pattern of unlatching, low speed braking mode, high speed braking mode and emergency brake modes.Initial work with magneto Distinguish automobile low speed as rotating speed and run at high speed, when automobile driving speed is not enough so that magneto produces electric current, the lowest Speed;When automobile driving speed can make magneto produce electric current, it is referred to as at a high speed.
Friction braking system in the present invention is EHB, and in friction braking system, the high pressure source of hydraulic oil is liquid High pressure accumulator in force feed road, the low pressure oil in hydraulic oil container is converted into hydraulic oil and is stored in height by the electric-motor pump in hydraulic circuit Pressure accumulator in, when needs friction brake work, integrated manipulator in hydraulic circuit near wheel cylinder hydraulic valve output control Signal processed, control valve port size, make hydraulic oil be flowed into the wheel cylinder of braking clamp body 7 from high pressure accumulator, wheelcylinder piston and then Promote brake pad 9 extrusion friction dish, i.e. friction brake work.When high pressure accumulator pressure transducer detects energy storage pressure During less than preset value, passing to integrated manipulator, integrated manipulator controls electric-motor pump and starts working, and supplements height to high pressure accumulator Force feed.
When automobile normal running is without braking, integrated arrestor is not received by the signal that pedal signal sensor sends, now Hydraulic valve at wheel cylinder cuts out, and the hydraulic oil in high pressure accumulator is not transported in wheel cylinder, and the piston in braking clamp body 7 can not push away Dynamic friction block 9 presses to frictional disk, i.e. friction brake does not works;Integrated manipulator is energized to electromagnetic brake coil 12, electricity Magnetic brake coil 12 can not form magnetic field, i.e. electromagnetic brake and not work;Generator coil 14 and electromagnetic brake and car Two electrical switches carrying storage battery connection all disconnect, it is impossible to form closed-loop path, i.e. electromotor and do not work.
When, after the signal that integrated manipulator receives pedal pressing force sensor and speed probe, processing by analysis and judge this signal During for low speed signal, owing to rotating speed is the lowest, electromotor cannot generate electricity, so disconnecting generator coil winding, i.e. electromotor Do not work;Now low due to speed, the braking moment needed for making car deceleration or braking is little, and electromagnetic braking moment is the most permissible Meet and slow down or braking requirement, therefore only electromagnetic braking part work in integrated arrestor.Now integrated manipulator output controls Signal, connects electromagnetic brake coil 12, and vehicular power-bottle is powered to electromagnetic brake, produces electricity in electromagnetic brake coil 12 Stream, forms magnetic field, and outboard friction dish 2 inner surface of rotation does cutting magnetic induction line motion, forms current vortex, and current vortex produces The magnetic field interaction that magnetic field and electromagnetic brake coil 12 produce, forms the moment hindering outboard friction dish to rotate, i.e. brake force Square.Integrated manipulator, by gathering and analyzing vehicle speed sensor signal and pedal signal, calculates required target braking force square, Thus control electromagnetic brake coil size of current.
When after the signal that integrated manipulator receives pedal pressing force sensor and speed probe, it is judged that this signal is run at high speed When automobile carries out slowing down or braking, integrated manipulator sends control signal to magneto and electromagnetic brake immediately, connects and sends out Motor output assigns to the electrical switch between electromagnetic brake importation.Permanent magnet 6 rotates along with the rotation of wheel, shape The generator coil 14 becoming closed-loop path does cutting magnetic induction line motion, produces electric current, i.e. magneto and start generating in coil. The voltage of electromotor output is by powering to electromagnetic brake through electrical switch after rectification, filtering, voltage stabilizing.Integrated manipulator to After electromagnetic brake output control signal, produce electric current in electromagnetic brake coil 12, form magnetic field, the outboard friction dish of rotation Interior 1 surface forms current vortex, the magnetic field interaction that the magnetic field of current vortex generation and electromagnetic brake coil 12 produce, and produces electric Magnetic brake power.When the electric energy of electromotor output can meet the needs of electromagnetic brake completely, electromagnetic brake is only from generating Machine power taking, the unnecessary electric energy of electromotor output stores in vehicular power-bottle;Electric energy in electromotor output is not enough to supply electromagnetic system When dynamic device uses, integrated manipulator is switched on vehicular power-bottle to the electrical switch between electromagnetic brake, and vehicular power-bottle is to electromagnetic system Dynamic device carries out supplementary power.Electric current in generator coil also can produce magnetic field, this magnetic field and permanent magnet magnetic field interactions, resistance Hindering permanent magnet 6 to rotate, owing to permanent magnet 6 is affixed with outboard friction dish 2, the magnetic field that i.e. coil current produces can hinder rubs The rotation of wiping dish, which forms motor braking moment.Motor braking power and electromagnetic system power complete braking task jointly.Work as electricity When brake force and electromagnetic system power sum do not reach target braking force, the now integrated manipulator just liquid in friction braking system Pressure valve output control signal, controls valve port size, makes hydraulic oil flow to wheel cylinder, wheel cylinder and then promotion brake pad from high pressure accumulator Extrusion friction dish, i.e. friction brake participate in work.Now controller is according to total braking force demand, reasonable distribution friction Brake force, electromagnetic system power and the ratio of the undertaken total braking force of motor braking power.Conduction controlling unit due to friction brake force Having hydraulic part, response is relatively slow, and is difficult to accurately control;Motor braking power is continually changing, it is impossible to control, electromagnetic system Power is that coil current size determines, so ensureing that total braking force is stable by regulation electromagnetic system power.Integrating control Device hydraulic valve output control signal in friction braking system, makes friction brake force keep constant, then by controlling electromagnetic system The size of dynamic device coil current ensures the demand of total braking force.
When integrated arrestor detects brake pedal signal, it is judged that during for brake hard, system enters emergency brake modes.This mould Formula requires that the brake force of output can make automobile obtain maximum deceleration.Existing achievement in research shows that wheel skid rate is attached 20% Time near, braking force coefficient reaches maximum, i.e. vehicle brake efficacy is best.Integrated manipulator is just to keep wheel skid rate 20% Neighbouring for controlling target.Integrated manipulator is first according to GES, wheel speed signal and brake pedal signal, and analysis meter calculates and rubs Wipe brake force, electromagnetic system power and motor braking power and undertake the scale of total braking force, should when calculating each brake force ratio Consider 2 points: the most generally electromagnetic system power and motor braking power sum cannot meet automobile when brake hard to brake force Demand, therefore friction brake needs to undertake main braking task;2. electromagnetic system power to have enough excursions.Collection After becoming controller to determine each brake force ratio, the control signal of the output of the hydraulic valve in friction braking system immediately, hydraulic oil flows to Wheel cylinder, wheel cylinder and then promotion brake pad extrusion friction dish, friction brake works, frictional damping in whole emergency brake modes Trying hard to keep, it is constant to hold.The brake force of electromagnetic brake is mainly produced by electric current, and reliability does not has friction brake good, the biggest Electric current is the biggest to the potential hazard of automobile electric appliance system, and therefore in emergency brake modes, electromagnetic brake undertakes smaller portions Braking task.Integrated manipulator constantly calculates wheel skid coefficient, determines to electromagnetic brake output electricity according to result of calculation The size of stream.In emergency brake modes, electromotor is in work or off position, when the wheel that integrated manipulator detects Rotating speed reaches electromotor when initiateing working speed, and integrated arrestor is switched on electrical switch, makes the voltage warp that magneto exports Electromagnetic brake is supplied after over commutation, filtering, voltage stabilizing.Voltage signal that integrated arrestor exports according to magneto and electromagnetism Size of current needed for brake judges whether to need to connect electrical switch, makes vehicular power-bottle to electromagnetic brake supplementary power.
Described embodiment be the present invention preferred embodiment, but the present invention is not limited to above-mentioned embodiment, without departing substantially from this In the case of the flesh and blood of invention, any conspicuously improved, replacement or modification that those skilled in the art can make are equal Belong to protection scope of the present invention.

Claims (9)

1. an electromagnetism and friction integrated brake system, it is characterised in that: include that friction brake, electromagnetic brake, permanent magnetism are sent out Motor, vehicular power-bottle, pedal signal sensor, energy storage pressure sensor, Wheel cylinder pressure sensors, vehicle speed sensor, turn Speed sensor and integrated manipulator, described friction brake includes inboard friction dish (1), outboard friction dish (2), braking clamp body (7), brake-caliper support (8) and brake pad (9), described outboard friction dish (2) has abrasive end face and hangs down with abrasive end face Straight great circle side face and roundlet side face, described great circle side face is connected by bolt (10) is fixing with inboard friction dish (1), described Outboard friction dish (2) is affixed with wheel rim, and described braking clamp body (7) is stuck in inboard friction dish (1) and outboard friction dish (2) Going up and be fixedly connected on brake-caliper support (8), the relative inner of braking clamp body (7) connects brake pad (9);Described electromagnetism The electromagnetic brake stator of brake is positioned between inboard friction dish (1) and outboard friction dish (2), with knuckle support or Suspension is affixed;Described magneto is positioned between electromagnetic brake and outboard friction dish (2), including permanent magnet (6) and send out Motor stator, the small circumference inner surface that described permanent magnet (6) is nested on support with outboard friction dish (2) is connected, described Motor stator is connected with electromagnetic brake stator by bolt;Pedal signal sensor, energy storage pressure sensor, pressure of wheel braking cylinder Sensor, vehicle speed sensor, speed probe are all connected with integrated manipulator, and described integrated manipulator senses according to pedal signal Device, energy storage pressure sensor, Wheel cylinder pressure sensors, vehicle speed sensor, speed probe signal control friction brake, Electromagnetic brake and the unlatching of magneto and Guan Bi, the outfan of magneto respectively with the input of electromagnetic brake and The input of vehicular power-bottle connects, and vehicular power-bottle provides power supply for electromagnetic brake.
Electromagnetism the most according to claim 1 and friction integrated brake system, it is characterised in that: described electromagnetic brake stator Including electromagnetic brake stator base (4), electromagnetic brake iron core (3) and electromagnetic brake coil (12), described electromagnetic system It is wound with electromagnetic brake coil (12) on dynamic device iron core (3) and is fixed on electromagnetic brake stator base (4).
Electromagnetism the most according to claim 2 and friction integrated brake system, it is characterised in that: described electromagnetic brake iron core (3) being 8, radial distribution is fixed on electromagnetic brake stator base (4).
Electromagnetism the most according to claim 3 and friction integrated brake system, it is characterised in that: described electromagnetic brake iron core (3) top is arc-shaped, is 1.0~1.5mm with the gap on the big circumference surface of outboard friction dish (2).
Electromagnetism the most according to claim 1 and friction integrated brake system, it is characterised in that: described generator unit stator includes Generator unit stator matrix (5), generator iron-core (13) and generator coil (14), described generator iron-core (13) is upper uniformly It is wound with generator coil (14) and radially distributed is fixed on generator unit stator matrix (5), described generator unit stator base Body (5) is connected with electromagnetic brake stator base (4).
Electromagnetism the most according to claim 5 and friction integrated brake system, it is characterised in that: described generator iron-core (13) Top be circular arc, be 1.0~1.5mm with the gap of permanent magnet (6).
7. according to the electromagnetism described in any one of claim 1~6 and friction integrated brake system, it is characterised in that: rub in described inner side The abrasive end face of wiping dish (1) and outboard friction dish (2) uses high-abrasive material, table in the big circumference of described outboard friction dish (2) Face is copper-clad (11).
8. according to the electromagnetism described in any one of claim 1~6 and friction integrated brake system, it is characterised in that: described permanent magnet (6) it is made up of 12 permanent magnets, is nested on plastic stent (15), described plastic stent (15) and outboard friction dish (2) Small circumference inner surface fixing connect.
9. an electromagnetism and the integrated brake control method that rubs, it is characterised in that comprise the following steps:
The brake force of S1: pedal signal sensor detection pedal, the pressure of the brake fluid at energy storage pressure sensor detection accumulator Power, the pressure of brake fluid at Wheel cylinder pressure sensors detection wheel cylinder, the working speed of speed probe detection automotive wheel, speed The speed of sensor detection running car;
S2: integrated manipulator receives pedal signal sensor, energy storage pressure sensor, Wheel cylinder pressure sensors, speed sensing The signal that device and speed probe detect, processes selection by analysis and opens not braking pattern, low speed according to the signal detected Braking mode, high speed braking mode or emergency brake modes;
When integrated manipulator does not receives pedal sensor signal, opening not braking pattern, integrated manipulator controls frictional damping Wheel cylinder hydraulic pressure valve in system cuts out, and controls electromagnetic brake coil (12) no power, controls generator coil (14) and electricity The electrical switch connected between magnetic brake disconnects, and controls the electronics being connected between generator coil (14) and vehicular power-bottle simultaneously Switch also disconnects;
When after the signal that integrated manipulator receives pedal signal sensor and speed probe, and when the working speed of wheel is low During speed, integrated manipulator controls friction brake and magneto does not works, and calculates braking according to the GES gathered Moment, control electromagnetic brake coil (12) size of current, thus control electromagnetic system power size;
When after the signal that integrated manipulator receives pedal pressing force sensor and speed probe, and when the working speed of wheel be height During speed signal, integrated manipulator is also turned on magneto and electromagnetic brake, and the voltage of electromotor output is by rectification, filter Powering to electromagnetic brake through electrical switch after ripple, voltage stabilizing, unnecessary electric energy stores in vehicular power-bottle, in electromotor output When electric energy is not enough to supply electromagnetic brake use, vehicular power-bottle is to electromagnetic brake supplementary power, when motor braking power and electromagnetism When brake force sum does not reaches target braking force, integrated manipulator is opened friction brake and controls the holding of friction brake brake force Constant, the demand of total braking force is ensured by the size adjusting electromagnetic brake coil electric current;
When integrated manipulator receives the emergency brake signal of pedal signal sensor, integrated manipulator is to keep wheel skid rate 20% for controlling target, calculate friction brake force, electromagnetic braking according to GES, brake pedal signal and tach signal Power and motor braking power undertake the scale of total braking force, determine the size to electromagnetic brake output electric current according to result of calculation, When the vehicle wheel rotational speed that integrated manipulator detects reaches magneto working speed, connect magneto to electromagnetic brake Between electrical switch, the size of current needed for voltage signal that integrated arrestor exports according to magneto and electromagnetic brake Judge whether to need to connect electrical switch, make vehicular power-bottle to electromagnetic brake supplementary power.
CN201410647525.4A 2014-11-14 2014-11-14 Electromagnetic and friction integrated brake system and control method thereof CN104482080B (en)

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