CN1958327A

CN1958327A - Electric controllable system for braking vehicle

Info

Publication number: CN1958327A
Application number: CN 200510110081
Authority: CN
Inventors: 仇卫华
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-06
Filing date: 2005-11-06
Publication date: 2007-05-09

Abstract

An electrically controllable barking system for car features that a semiconductor circuit is used to turn on or cut off the current of a braking motor to generate a braking force moment and realize barking in excellent braking curve mode.

Description

Electric controllable system for braking vehicle

Technical field

Electric controllable system for braking vehicle belongs to the electrical technology application.Relate to Principle of Electric Engine, electro-magnetism, thyristor unsteady flow technology, Analog Electronics Technique, automatic control theory, detection technique, Principles of Microcomputers etc.

Background technology

At present the vehicle braked system mainly relies on the mechanical friction principle to realize braking, the braking of automobile without exception be the mechanical friction braking, its shortcoming is easy locking, makes motor tire and ground produce cliding friction, easily automobile is thrown away and the generation accident.And " anti-locking system for car (ABS) " still can not be delivered to superior braking curve uppity mechanics though realized closed loop adjustment on electric.On the other hand, a large amount of uses of thyristor and improving constantly of Semiconductor Converting Technology in the modern industry, the raising of electric elements performance, the development of specific type of electric machine technology are the essential conditions that electric controllable system for braking vehicle produces.

Summary of the invention

The vehicle electric brake system,

English: electrical controllable brake system for vehicle (being called for short EBS) system is made up of electrical generator and SCR control two parts.

1. generator system

The principle of electrical generator is a magneto alternator.The inner ring of vehicle hub is installed the bar permanent magnet of some, and wheel hub, tire and bar magnet all are the parts of rotor, and stationary part is the induction winding, and winding is in some way connected to the power consumption loop according to designing requirement.

2. thyristor control system

Detect the speed of vehicle, obtain the electric energy frequency that the vehicle hub permanent magnet excites stator winding thus, speed-slackening signal (brake pedal potential device) is in case provide, will regulate the pulsewidth of thyristor gating circuit with the power of this signal, and, periodically give circuit copped wave, by passing to braking resistor behind the flat ripple of smoothing reactor with detected frequency, consumed power is released energy by the radiating gill of resistance.

3. intelligence control system

A. for guaranteeing the reliable effectively work of drg, the speed that needs two different modes detects.Judge when wheel hub or spindle speed change separately suddenly therein, send braking instruction in time, exactly.See accompanying drawing 2 the 1st and the 2nd.

B. this system need be when potential device provides peak signal, just reaches maximum torque energy consumption the time fully, and under the braking force of this torque, vehicle can not surpass the restriction of stopping distance.Total line control.

C. anti-excess acceleration control.The speed-slackening signal that pedal provides is in a single day excessive, and system must provide the peak acceleration that As-Is allows and come the control brake process, prevents to uncouple.Total line control.

D. the brakig force distribution of wheel turning process control.The wheel velocity that microprocessor judges is different provides suitable speed-slackening signal.See Fig. 2 the 1st.

E. the fail safe measure of brake system.Can under the situation that winding, unsteady flow major loop, control loop etc. lost efficacy, complemental brake system work be arranged, and the safety braking functions after the fault prompting being arranged and producing fault.Additional brake belongs to mechanical braking.

F. the invalid judgement of incoming signal.In brake pedal when action,, the malfunctioning judgement of potential device is by the 3rd realization of accompanying drawing 2, and the rate of change of potential device can not surpass a certain specific value.

G. potential device redundant system.Slipper produces the potential device signal more than 2, judges whether a certain potential device is malfunctioning, in time produces " yellow " breakdown signal.

Description of drawings

Fig. 1. be hub portion (electrical generator) part lateral plan, the 2nd, the wheel hub outer ring, such as: the tire support ring of roadlice.3 and 5 is bar permanent magnets, is installed in the inner ring of wheel hub.The 4th, stationary part is fixed on the chassis of vehicle, and the outer ring has wire casing, and the quantity of wire casing is used with actual design and is as the criterion.Coil 7 is distributed in the wire casing in some way.

Fig. 2. be signal detection, signal transmits schematic diagram.

Fig. 3. the power consumption schematic diagram of electric major loop.

The specific embodiment

After car key was opened, EBS started working, and selfdiagnosis one time (in 3 seconds) scans each parts and whether is in normal operating range, was ready then at once.Behind the automobile start, as driver during with speed push down on the pedal arbitrarily, micro computer is according to the signal power of sending here, and the control main circuit current makes electrical generator provide lock torque certain on the wheel hub.Reach the braking purpose.If the driver " floors pedal ", system can increase braking force rapidly, till the speed that detects wheel is slightly less than vehicle displacement speed, reaches braking acceleration stable state (the fastest braking), up to stopping.

Claims

1. permanent magnet AC dynamic brake dish is installed in the hub positions of vehicle.

2. the mechanical force that transmits from vehicle hub need not gear change, directly acts on generator shaft.

3. apply to the electromagnetic force brake system of vehicle, rely on the silicon-controlled conversion technology to change demand braking force.

4. Chinese: ' electric controllable system for braking '.English: ' electrical controllable brake system for vehicle ' and English abbreviation the: ' EBS '.

5. the speed-slackening signal that changes with the stretcher form, and send controller to.

6. use on vehicle, be converted into electric energy by the kinetic energy of vehicle, with the form of braking resistor as power consumption.