CN104175889A - DSP (digital signal processor) control based electromagnetic brake system - Google Patents
DSP (digital signal processor) control based electromagnetic brake system Download PDFInfo
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- CN104175889A CN104175889A CN201410406966.5A CN201410406966A CN104175889A CN 104175889 A CN104175889 A CN 104175889A CN 201410406966 A CN201410406966 A CN 201410406966A CN 104175889 A CN104175889 A CN 104175889A
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Abstract
The invention provides a DSP (digital signal processor) control based electromagnetic brake system comprising a first electromagnetic winding and a second electromagnetic winding. The first electromagnetic winding and a tire are coaxially fixed and disposed on the inner side of a hub; the second electromagnetic winding is fixed on the periphery of a travel path of the first electromagnetic winding through a brake support; the first electromagnetic winding rotates with the tire to form a rotor; the second electromagnetic winding is fixed on the brake support to form a stator. A generator system disposed on a drive shaft allows reluctance braking, and abrasion of parts of a traditional brake pad is avoided.
Description
Technical field
The present invention relates to vehicle electric field, refer to especially a kind of brake system.
Background technology
In the brake system of automobile, brake facing is the breaking piece of most critical, and 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 generally consists 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 comprised of adiabatical material, and object is heat insulation.Friction shoe is comprised of friction material, adhesives, is compressed on brake disc or brake drum and produces and rub, thereby reach the object that car retardation brakes during 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 electromagnetic brake system of controlling based on DSP, solved the problem that friction brake in prior art causes component wear.
Technical scheme of the present invention is achieved in that
An electromagnetic brake system of controlling based on DSP, 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, and the quantity of the first electromagnetism winding is at least 8, is evenly distributed on the circumference of 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, and 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;
Dsp processor, receives the electric signal that described brake pedal sensor is exported, and by the data sheet prestoring, exports corresponding control signal;
The first power transformation circuit, its input end is connected to storage battery, and its mouth is connected to the first electromagnetism winding, and the electric current of controlling output respective magnitudes according to the control signal of described controller is to described the first electromagnetism winding;
The second power transformation circuit, its input end is connected to storage battery, and its mouth is connected to the second electromagnetism winding, and the electric current of controlling output respective magnitudes according to the control signal of described controller is to described the second electromagnetism winding;
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 the second power transformation circuit is bi-directional path.
Alternatively, described controller is TMS320F2812DSP treater.
The invention has the beneficial effects as follows:
By being arranged on the generator system on axle drive shaft, realize magnetic resistance braking, avoided the component wear of traditional brake facing.
Accompanying drawing explanation
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 skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the winding construction schematic diagram of a kind of electromagnetic brake system of controlling based on DSP of the present invention;
Fig. 2 is the circuit control block diagram of a kind of electromagnetic brake system of controlling based on DSP of the present invention
Fig. 3 is the circuit diagram of the first power transformation circuit in Fig. 2;
Fig. 4 is the circuit diagram of the second power transformation circuit in Fig. 2.
The specific embodiment
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, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, a kind of electromagnetic brake system of controlling based on DSP of the present invention, 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, the quantity of the first electromagnetism winding is at least 8, is evenly distributed on the circumference of 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, and the second electromagnetism winding is fixed on braking bracket, as stator.
As shown in Figure 2, the electromagnetic brake system of controlling based on DSP of the present invention also comprises the brake pedal sensor 40 being connected with brake pedal, according to navigating mate braking strength, exports proportional electric signal; Controller 50, receives the electric signal that described brake pedal sensor is exported, and by the data sheet prestoring, exports corresponding control signal; The first power transformation circuit 20, its input end is connected to storage battery 10, and its mouth is connected to the first electromagnetism winding, and the electric current of controlling output respective magnitudes according to the control signal of described controller 50 is to described the first electromagnetism winding 30; The second power transformation circuit 60, its input end is connected to storage battery 10, and its mouth is connected to the second electromagnetism winding 70, and the electric current of controlling output respective magnitudes according to the control signal of described controller is to described the second electromagnetism winding 70.
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, and controller is controlled the electric current of flow through the first electromagnetism winding and the second electromagnetism winding, and then between control the first electromagnetism winding and the second electromagnetism winding, side magnetic resistance is 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 the first power transformation circuit 20 comprises: the second inducer 21, and its one end is connected to described power supply 1; Second switch pipe 22 and the 3rd switching valve 23, the source electrode of second switch pipe 22 and the 3rd switching valve 23 links together and is connected to the other end of the second inducer 21, the drain electrode of second switch pipe 22 is connected to secondary earth potential, the other end that the drain electrode of the 3rd switching valve 23 is connected to mouth and the second cond 25, the second conies 25 is connected to secondary earth potential; Second switch actuator 24, the UC3714 of Qi Wei Texas Instruments chip, clock signal based on control end input produces the switching drive signal of two-way complementation, and a road is coupled to described second switch pipe 22 grids, and another road is coupled to described the 3rd switching valve 23 grids.
As shown in Figure 4, described the second power transformation circuit 60 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 and second switch actuator 24, the turn-on and turn-off of master cock pipe, and then control the electric current that outputs to electromagnetism winding.
Preferably, described controller is dsp processor.
Preferably, described controller is TMS320F2812DSP treater.
TMS320F2812DSP, 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 a plurality of 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, avoided 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 modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (2)
1. an electromagnetic brake system of controlling based on DSP, is characterized in that, 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, and the quantity of the first electromagnetism winding is at least 8, is evenly distributed on the circumference of 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, and 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;
Dsp processor, receives the electric signal that described brake pedal sensor is exported, and by the data sheet prestoring, exports corresponding control signal;
The first power transformation circuit, its input end is connected to storage battery, and its mouth is connected to the first electromagnetism winding, and the electric current of controlling output respective magnitudes according to the control signal of described controller is to described the first electromagnetism winding;
Described the first power transformation circuit comprises:
The second inducer, its one end is connected to described power supply;
Second switch pipe and the 3rd switching valve, the source electrode of second switch pipe and the 3rd switching valve links together and is connected to the other end of the second inducer, the drain electrode of second switch pipe is connected to secondary earth potential, the drain electrode of the 3rd switching valve is connected to the second cond, and the other end of the second cond is connected to secondary earth potential;
Second switch actuator, the UC3714 of Qi Wei Texas Instruments chip, the clock signal based on control end input produces the switching drive signal of two-way complementation, and a road is coupled to described second switch tube grid, another road is coupled to described the 3rd switching valve grid, and its control end is connected to described controller;
The second power transformation circuit, its input end is connected to storage battery, and its mouth is connected to the second electromagnetism winding, and the electric current of controlling output respective magnitudes according to the control signal of described controller is to described the second electromagnetism winding;
Described the second 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, and control end receives the control signal of described controller output, and the emitter of the first transistor and transistor seconds links together as mouth, 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;
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.
2. the electromagnetic brake system of controlling based on DSP as claimed in claim 1, is characterized in that, described controller is TMS320F2812DSP treater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410406966.5A CN104175889A (en) | 2014-08-19 | 2014-08-19 | DSP (digital signal processor) control based electromagnetic brake system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410406966.5A CN104175889A (en) | 2014-08-19 | 2014-08-19 | DSP (digital signal processor) control based electromagnetic brake system |
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| CN104175889A true CN104175889A (en) | 2014-12-03 |
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| CN201410406966.5A Pending CN104175889A (en) | 2014-08-19 | 2014-08-19 | DSP (digital signal processor) control based electromagnetic brake system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040035656A1 (en) * | 2002-08-20 | 2004-02-26 | Sohel Anwar | Method and apparatus for power management of a regenerative braking system |
| CN202006735U (en) * | 2011-01-04 | 2011-10-12 | 上海理工大学 | Disc-free braking system |
| CN104149636A (en) * | 2014-08-01 | 2014-11-19 | 青岛盛嘉信息科技有限公司 | DSP (digital signal processor) based electromagnetic braking method |
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2014
- 2014-08-19 CN CN201410406966.5A patent/CN104175889A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040035656A1 (en) * | 2002-08-20 | 2004-02-26 | Sohel Anwar | Method and apparatus for power management of a regenerative braking system |
| CN202006735U (en) * | 2011-01-04 | 2011-10-12 | 上海理工大学 | Disc-free braking system |
| CN104149636A (en) * | 2014-08-01 | 2014-11-19 | 青岛盛嘉信息科技有限公司 | DSP (digital signal processor) based electromagnetic braking method |
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