CN104149635A - Magnetic-resistance brake pad based on digital control - Google Patents
Magnetic-resistance brake pad based on digital control Download PDFInfo
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- CN104149635A CN104149635A CN201410413029.2A CN201410413029A CN104149635A CN 104149635 A CN104149635 A CN 104149635A CN 201410413029 A CN201410413029 A CN 201410413029A CN 104149635 A CN104149635 A CN 104149635A
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Abstract
The invention provides a magnetic-resistance brake pad based on digital control. The magnetic-resistance brake pad comprises a first electromagnetic winding and a second electromagnetic winding. The first electromagnetic winding and a tire are coaxially fixed, the first electromagnetic winding is arranged on the inner side of a wheel hub, the second electromagnetic winding is fixed to the periphery of a moving path of the first electromagnetic winding through a brake support, the first electromagnetic winding rotates along with the tire to form a rotor, and the second electromagnetic winding is fixed to the brake support to serve as a stator. According to the magnetic-resistance brake pad, magnetic-resistance braking is achieved through a generator system arranged on a driving shaft, and part abrasion of a traditional brake pad is avoided.
Description
Technical field
The present invention relates to vehicle electric field, refer to especially a kind of based on numerically controlled magnetic resistance brake facing.
Background technology
Automobile based on numerically controlled magnetic resistance brake facing in, brake facing is the breaking piece of most critical, the quality of all braking effects is all that brake facing plays a decisive role, so the brake facing of agreeing is the patron saint of people and automobile.
Brake facing is generally made up of steel plate, bonding thermal insulation layer and friction shoe, and steel plate will come through application antirust, and coating process is ensured the quality of products with the temperature traverse that SMT-4 furnace temperature tracker detects coating process.Wherein thermal insulation layer is made up of adiabatical material, and object is heat insulation.Friction shoe is made up of friction material, adhesives, is compressed on brake disc or brake drum and produces and rub, thereby reach the object that car retardation brakes when brake.Due to rubbing effect, friction shoe can be worn gradually, and the brake facing that cost is lower in general weares and teares sooner.
Existing brake facing mainly divides following a few class: asbestos brake lining, semi-metallic brake pad, micro-metal brake pad, NAO formula brake facing, ceramic brake, NAO ceramic brake.The principle of work of existing brake facing is mainly carried out self-friction, utilizes the friction of brake facing and brake disc (drum), and the kinetic energy that vehicle is advanced converts the heat energy after friction to, and car is stopped.
The method of traditional friction brake, causes the wearing and tearing of corresponding component, reduction of service life.
Summary of the invention
The present invention proposes a kind of based on numerically controlled magnetic resistance brake facing, solved friction brake in prior art and cause the problem of component wear.
Technical scheme of the present invention is achieved in that
A kind of based on numerically controlled magnetic resistance brake facing, comprising:
The first electromagnetism winding and the second electromagnetism winding, described the first electromagnetism winding and tire are coaxial fixing and be arranged on wheel hub inner side, described the second electromagnetism winding is fixed on by braking bracket on the circumference of the first electromagnetism winding travel path, the first electromagnetism winding is with tire rotation, form rotor, the second electromagnetism winding is fixed on braking bracket, as stator;
The brake pedal sensor being connected with brake pedal, exports proportional electric signal according to navigating mate braking strength;
AD converter, is connected to described brake pedal sensor, and analog electrical signal is converted to digital signal;
Controller, receives the digital signal that described AD converter is exported, and exports corresponding control signal by the data sheet prestoring;
Power transformation circuit, its input end is connected to storage battery, its mouth is connected to the first electromagnetism winding and the second electromagnetism winding, arrive described the first electromagnetism winding and the second electromagnetism winding, current opposite in direction in the first electromagnetism winding and the second electromagnetism winding according to the electric current of the control signal control output respective magnitudes of described controller;
Described the first electromagnetism winding is arranged in vehicle drive shaft, forms power generating system with the second electromagnetism winding, and the first electromagnetism winding is rotor-end, and the second electromagnetism winding is stator terminal;
Described power transformation circuit comprises:
Voltage transformer, comprise former limit winding and secondary winding, former limit winding comprises first end and the second end, secondary winding comprises first end and the second end, former limit winding first end is connected to described storage battery, secondary winding the second end is connected to secondary earth potential, and former limit winding first end and secondary winding the second end are Same Name of Ends;
The first switching valve, its source electrode is connected to transformer primary side winding the second end, and its drain electrode is connected to former limit earth potential, and its grid is connected to the first switch driver;
The first switch driver, comprise the first transistor and transistor seconds, the first transistor is NPN transistor, transistor seconds is PNP transistor, the base stage of the first transistor and transistor seconds links together as control end, the emitter of the first transistor and transistor seconds links together as mouth, and the collecting electrode of the first transistor is connected to storage battery, and the collecting electrode of transistor seconds is connected to former limit earth potential;
The first diode, its anodic bonding is to voltage transformer secondary winding first end, and its negative electrode is connected to the first inducer;
The common port of the first inducer and the first cond is as mouth, and the other end of the first cond is connected to secondary earth potential.
Alternatively, described controller is dsp processor.
Alternatively, described controller is TMS320F2812 dsp processor.
The invention has the beneficial effects as follows:
By being arranged on the generator system on axle drive shaft, realize magnetic resistance braking, avoid the component wear of traditional brake facing.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of structural representation based on numerically controlled magnetic resistance brake facing of the present invention;
Fig. 2 is a kind of circuit control block diagram based on numerically controlled magnetic resistance brake facing of the present invention;
Fig. 3 is the circuit diagram of power transformation circuit in Fig. 2.
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, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As depicted in figs. 1 and 2, one of the present invention is based on numerically controlled magnetic resistance brake facing, comprise: the first electromagnetism winding 30 and the second electromagnetism winding 70, described the first electromagnetism winding and tire are coaxial fixing and be arranged on wheel hub inner side, described the second electromagnetism winding is fixed on by braking bracket on the circumference of the first electromagnetism winding travel path, and the first electromagnetism winding, with tire rotation, forms rotor, the second electromagnetism winding is fixed on braking bracket, as stator.
Of the present inventionly also comprise based on numerically controlled magnetic resistance brake facing: the brake pedal sensor 40 being connected with brake pedal, export proportional electric signal according to navigating mate braking strength; AD converter 41, is connected to described brake pedal sensor, and analog electrical signal is converted to digital signal; Controller 50, receives the electric signal that described brake pedal sensor is exported, and exports corresponding control signal by the data sheet prestoring; Power transformation circuit 20, its input end is connected to storage battery 10, its mouth is connected to the first electromagnetism winding 30 and the second electromagnetism winding 70, arrive described the first electromagnetism winding and the second electromagnetism winding, current opposite in direction in the first electromagnetism winding and the second electromagnetism winding according to the electric current of the control signal control output respective magnitudes of described controller.
Described the first electromagnetism winding 30 is arranged in vehicle drive shaft, forms power generating system with the second electromagnetism winding 70, and the first electromagnetism winding is rotor-end, and the second electromagnetism winding is stator terminal.Navigating mate operates brake pedal, the flow through electric current of the first electromagnetism winding and the second electromagnetism winding of controller control, and then to control side magnetic resistance between the first electromagnetism winding and the second electromagnetism winding be braking force, realizes braking effect.Between the first electromagnetism winding and the second electromagnetism winding, be air gap, there is no contact site, therefore do not produce any wearing and tearing, avoided the frictional loss of traditional brake modes.
As shown in Figure 3, described power transformation circuit 20 comprises: voltage transformer 11, comprise former limit winding and secondary winding, former limit winding comprises first end and the second end, secondary winding comprises first end and the second end, former limit winding first end is connected to storage battery as input end, and secondary winding the second end is connected to secondary earth potential, and former limit winding first end and secondary winding the second end are Same Name of Ends; The first switching valve 12, its source electrode is connected to transformer primary side winding the second end, and its drain electrode is connected to former limit earth potential, and its grid is connected to the first switch driver 13; The first switch driver 13, comprise the first transistor and transistor seconds, the first transistor is NPN transistor, transistor seconds is PNP transistor, the base stage of the first transistor and transistor seconds links together as control end, the emitter of the first transistor and transistor seconds links together as mouth, and the collecting electrode of the first transistor is connected to power supply 1, and the collecting electrode of transistor seconds is connected to former limit earth potential; The first diode 14, its anodic bonding is to voltage transformer secondary winding first end, and its negative electrode is connected to the first inducer 15; The common port of the first inducer 15 and the first cond 16 is as mouth, and the other end of the first cond 16 is connected to secondary earth potential.
Described controller 50 outputs a control signal to the control end of the first switch driver 13, controls the turn-on and turn-off of the first switching valve, and then controls the electric current that outputs to electromagnetism winding.
Preferably, described controller is dsp processor.
Preferably, described controller is TMS320F2812 dsp processor.
TMS320F2812 DSP, is 32 fixed DSPs, and the AD data acquisition that it has EVA, EVB task manager and supporting 12 16 passages, has abundant Peripheral Interface, as CAN, SCI etc.The ADC module of TMS320F2812 is 12 bit resolutions, has the A and D converter of pipeline organization, the built-in dual-sampling hold circuit of TMS320F2812, and while keeping data acquisition, window has independently pre-calibration to control.And permission system is to same Channel-shifted repeatedly, allow user to carry out over-sampling algorithm, this more traditional single transformation result has increased more solution, is conducive to improve the precision of sampling.There are multiple trigger sources can start ADC conversion.Fast speed transfer time, ADC clock can be configured to 25MHz, and the highest sampling bandwidth is 12.5MSPS.While building data acquisition system with TMS320F2812, needn't external ADC, avoid complicated hardware design.
The present invention, by being arranged on the generator system on axle drive shaft, realizes magnetic resistance braking, has avoided the component wear of traditional brake facing.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. the first electromagnetism winding and the second electromagnetism winding, described the first electromagnetism winding and tire are coaxial fixing and be arranged on wheel hub inner side, described the second electromagnetism winding is fixed on by braking bracket on the circumference of the first electromagnetism winding travel path, the first electromagnetism winding is with tire rotation, form rotor, the second electromagnetism winding is fixed on braking bracket, as stator;
Also comprise:
The brake pedal sensor being connected with brake pedal, exports proportional electric signal according to navigating mate braking strength;
AD converter, is connected to described brake pedal sensor, and analog electrical signal is converted to digital signal;
Controller, receives the digital signal that described AD converter is exported, and exports corresponding control signal by the data sheet prestoring;
Power transformation circuit, its input end is connected to storage battery, its mouth is connected to the first electromagnetism winding and the second electromagnetism winding, arrive described the first electromagnetism winding and the second electromagnetism winding, current opposite in direction in the first electromagnetism winding and the second electromagnetism winding according to the electric current of the control signal control output respective magnitudes of described controller;
Described power transformation circuit comprises:
Voltage transformer, comprise former limit winding and secondary winding, former limit winding comprises first end and the second end, secondary winding comprises first end and the second end, former limit winding first end is connected to described storage battery, secondary winding the second end is connected to secondary earth potential, and former limit winding first end and secondary winding the second end are Same Name of Ends;
The first switching valve, its source electrode is connected to transformer primary side winding the second end, and its drain electrode is connected to former limit earth potential, and its grid is connected to the first switch driver;
The first switch driver, comprise the first transistor and transistor seconds, the first transistor is NPN transistor, transistor seconds is PNP transistor, the base stage of the first transistor and transistor seconds links together as control end, the emitter of the first transistor and transistor seconds links together as mouth, and the collecting electrode of the first transistor is connected to storage battery, and the collecting electrode of transistor seconds is connected to former limit earth potential;
The first diode, its anodic bonding is to voltage transformer secondary winding first end, and its negative electrode is connected to the first inducer;
The common port of the first inducer and the first cond is as mouth, and the other end of the first cond is connected to secondary earth potential.
2. as claimed in claim 1ly it is characterized in that based on numerically controlled magnetic resistance brake facing, described controller is dsp processor.
3. as claimed in claim 2ly it is characterized in that based on numerically controlled magnetic resistance brake facing, described controller is TMS320F2812 dsp processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410413029.2A CN104149635A (en) | 2014-08-19 | 2014-08-19 | Magnetic-resistance brake pad based on digital control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410413029.2A CN104149635A (en) | 2014-08-19 | 2014-08-19 | Magnetic-resistance brake pad based on digital control |
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| Publication Number | Publication Date |
|---|---|
| CN104149635A true CN104149635A (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410413029.2A Pending CN104149635A (en) | 2014-08-19 | 2014-08-19 | Magnetic-resistance brake pad based on digital control |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746294A (en) * | 1996-08-14 | 1998-05-05 | Kia Motors Corporation | Magnetic brake system for a vehicle |
| JP2012066701A (en) * | 2010-09-24 | 2012-04-05 | Advics Co Ltd | Vehicle brake system |
| CN103683645A (en) * | 2013-12-16 | 2014-03-26 | 陕西通运专用汽车集团有限公司 | Eddy current brake for heavy-duty mining dump truck |
| CN104175887A (en) * | 2014-08-15 | 2014-12-03 | 青岛盛嘉信息科技有限公司 | Magnetic resistance braking method based on digital control |
-
2014
- 2014-08-19 CN CN201410413029.2A patent/CN104149635A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746294A (en) * | 1996-08-14 | 1998-05-05 | Kia Motors Corporation | Magnetic brake system for a vehicle |
| JP2012066701A (en) * | 2010-09-24 | 2012-04-05 | Advics Co Ltd | Vehicle brake system |
| CN103683645A (en) * | 2013-12-16 | 2014-03-26 | 陕西通运专用汽车集团有限公司 | Eddy current brake for heavy-duty mining dump truck |
| CN104175887A (en) * | 2014-08-15 | 2014-12-03 | 青岛盛嘉信息科技有限公司 | Magnetic resistance braking method based on digital control |
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Application publication date: 20141119 |