CN110606062A - Permanent magnet linear nonlinear line-control brake device - Google Patents
Permanent magnet linear nonlinear line-control brake device Download PDFInfo
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- CN110606062A CN110606062A CN201910895310.7A CN201910895310A CN110606062A CN 110606062 A CN110606062 A CN 110606062A CN 201910895310 A CN201910895310 A CN 201910895310A CN 110606062 A CN110606062 A CN 110606062A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a permanent magnet linear nonlinear line control brake device which comprises a brake pedal assembly, a rotor solenoid, an assembly mounting bracket, a stator bracket, a stud, a pin shaft, a bearing, a permanent magnet, a controller and a wire harness, wherein the rotor solenoid is fixed on the brake pedal assembly, the brake pedal assembly is fixed on the stator bracket through a pin shaft and a bearing, the stator bracket is welded on the outer side of the stator, the assembly mounting bracket is welded on the stator and the stator bracket, the permanent magnet is fixed in the stator, the controller is fixed on the mounting surface of the assembly mounting bracket, the wire harness is connected with the rotor solenoid, and an assembly part formed by the structure is fixed on a whole vehicle through the stud welded on the assembly mounting bracket.
Description
The technical field is as follows:
the invention relates to a drive-by-wire chassis system of an intelligent driving vehicle, in particular to a permanent magnet type linear nonlinear drive-by-wire brake device.
Background art:
the intelligent driving automobile is the strategic high point of future development of the automobile industry, is an important breakthrough for transformation and upgrading of the automobile industry and from great strength to great strength, is an important engine for associating a plurality of key fields, realizing synergetic innovation and constructing a novel transportation system, and has great strategic significance in aspects of building industrial ecology, promoting national innovation, improving traffic safety, realizing energy conservation and emission reduction and the like. The brake-by-wire system is a key system for intelligently driving the automobile and determines the braking performance, comfort, economy and safety of the whole automobile.
In order to achieve level-L2 assist driving and level-L3 automatic driving, the brake-by-wire performance must be excellent enough to achieve performance higher than that of a human driver. Most of the current products adopt a common rotating motor combined with a gear rack or a gear and worm gear structure, which brings the reduction of efficiency and the increase of response delay, and the corresponding delay is crucial to intelligent driving.
Therefore, a brand-new brake-by-wire system needs to be developed, and a brake force curve can be calibrated, so that the emergency braking requirement is met, and the riding comfort is not influenced; regenerative braking can be realized to the maximum extent, 100% of braking energy can be recovered when the motor capacity meets the braking requirement, deceleration fluctuation is avoided, and good driving feeling is kept; the system has high dynamic pressure building performance so as to build pressure autonomously at a higher speed, remarkably shorten the response time under automatic emergency braking and shorten the braking distance, and can better protect pedestrians and support V2X traffic safety assistance; in the case of unavoidable collisions, it also helps to reduce the speed, mitigate the impact and risk of injury to all parties involved, and protect the lives and property of the traffic participants.
The invention content is as follows:
the invention provides a permanent magnet linear nonlinear brake-by-wire device for solving the problems in the prior art, which is characterized in that the original brake pedal is correspondingly changed, the universality is ensured as much as possible, the brake-by-wire function is realized through a nonlinear control strategy, and the device has the advantages of simple structure, high universality, good reliability, quick response and outstanding cost performance.
The technical scheme adopted by the invention is as follows: a permanent magnet linear nonlinear line control brake device comprises a brake pedal assembly, a rotor solenoid, an assembly mounting support, a stator support, a stud, a pin shaft, a bearing, a permanent magnet, a controller and a wire harness, wherein the rotor solenoid is fixed on the brake pedal assembly, the brake pedal assembly is fixed on the stator support through the pin shaft and the bearing, the stator support is welded on the outer side of the stator, the assembly mounting support is welded on the stator and the stator support, the permanent magnet is fixed inside the stator, the controller is fixed on a mounting surface of the assembly mounting support, the wire harness is connected with the rotor solenoid, and an assembly part formed by the structure is fixed on a whole vehicle through the stud welded on the assembly mounting support.
The invention has the following beneficial effects:
1. the device is applicable to the modification of almost any vehicle with a brake pedal;
2. the method is also suitable for the active braking control of the unmanned vehicle without the brake pedal;
3. the brake system can be compatible with a vacuum boosting brake system, and can also replace the vacuum boosting system to directly act on a hydraulic main cylinder.
4. The response speed is far higher than 300-400 ms of a human driver;
5. the braking acceleration is higher than the working requirement of 0.8 g;
6. the regenerative braking deceleration is higher than 0.3g, and the highest energy recovery rate can reach 100 percent;
7. the nonlinear brake pressure regulation can be realized, and the requirements of driving experience and riding comfort can be balanced.
Description of the drawings:
fig. 1 is an assembly schematic diagram of a permanent magnet linear nonlinear brake-by-wire device according to the present invention.
Fig. 2 is a schematic diagram of the working principle of the permanent magnet linear nonlinear brake-by-wire device of the present invention.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings.
The invention relates to a permanent magnet linear nonlinear line control brake device, which comprises a brake pedal assembly 1, a rotor solenoid 2, an assembly mounting bracket 3, a stator 4, a stator bracket 5, a stud 6, a pin shaft and bearing 7, a permanent magnet 8, a controller 9 and a wire harness 10, wherein the rotor solenoid 2 is fixed on the brake pedal assembly 1, the brake pedal assembly 1 is fixed on the stator bracket 5 through a pin shaft and a bearing 7, the stator bracket 5 is welded on the outer side of the stator 4, the assembly mounting bracket 3 is welded on the stator 4 and the stator bracket 5, the permanent magnet 8 is fixed in the stator 4, the controller 9 is fixed on the mounting surface of the assembly mounting bracket 3, the wire harness 10 is connected with the rotor solenoid 2, and the whole assembly is fixed on a whole vehicle through the stud 6 welded on the assembly mounting bracket.
The permanent magnet linear nonlinear line-control brake device disclosed by the invention applies the principles of ampere force and a linear motor, can realize line-control of the brake device by a simple physical structure, the response time of the motor can reach nanosecond level theoretically, and the execution time is far lower than that of the conventional EHB (electronic hydraulic brake) product with a gear structure, a gear rack structure or a ball screw structure.
The technical principle of the permanent magnet linear nonlinear line-control brake device is as follows:
1. ampere force
When a straight wire with the length L is electrified with a current with the intensity I and is placed in a uniform external magnetic field with the magnetic induction intensity B, the magnitude of the ampere force applied to the wire is F ═ IBLsin alpha, wherein alpha is an included angle between the current direction in the wire and the B direction, and units of F, L, I and B are N, m, A and T respectively. The direction of the ampere force is perpendicular to the plane defined by the energized conductor and the direction of the magnetic field, and the direction between I, B and F is determined by the left-hand rule.
2. Linear motor
The linear motor is a transmission device which directly converts electric energy into linear motion without any intermediate conversion mechanism, has excellent performances of high acceleration, high speed, quick response, smooth force characteristic and the like, adopts a proper positioning feedback and induction device, can achieve the positioning precision of a nanometer level, can achieve the acceleration of hundreds of grams (related to load), and is convenient to apply in a braking mechanism by making a stator and a rotor of the linear motor into an arc shape or other shapes.
3. Non-linear control
By utilizing the high-precision and low-delay characteristics of the linear motor, nonlinear operation curves are respectively calibrated for a motion mode, a comfort mode, an energy-saving mode and the like, the optimal braking performance is realized, the driving comfort or the motion experience is ensured, the high-proportion regenerative braking is realized, and the energy-saving and efficiency-increasing effects are realized. The moving direction of the rotor is adjusted by changing the current direction of the rotor coil.
4. Brake by wire
The brake can be used as pedal force enhanced power-assisted brake and emergency auxiliary brake required by ADAS, and can also be used as a brake-by-wire completely controlled by a computer, thereby meeting the requirements of automatic driving conditions of L2-L5.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.
Claims (1)
1. A permanent magnet type linear nonlinear line control brake device is characterized in that: comprises a brake pedal assembly (1), a rotor solenoid (2), an assembly mounting bracket (3), a stator (4), a stator bracket (5), a stud (6), a pin shaft and bearing (7), a permanent magnet (8), a controller (9) and a wire harness (10), the rotor solenoid (2) is fixed on the brake pedal assembly (1), the brake pedal assembly (1) is fixed on the stator bracket (5) through a shaft pin and a bearing (7), the stator bracket (5) is welded on the outer side of the stator (4), the assembly mounting bracket (3) is welded on the stator (4) and the stator bracket (5), the permanent magnet (8) is fixed in the stator (4), the controller (9) is fixed on the installation surface of the assembly installation support (3), the wiring harness (10) is connected with the rotor solenoid (2), the assembly part formed by the structure is fixed on the whole vehicle through a stud (6) welded on the assembly mounting bracket (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910895310.7A CN110606062A (en) | 2019-09-20 | 2019-09-20 | Permanent magnet linear nonlinear line-control brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910895310.7A CN110606062A (en) | 2019-09-20 | 2019-09-20 | Permanent magnet linear nonlinear line-control brake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110606062A true CN110606062A (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910895310.7A Pending CN110606062A (en) | 2019-09-20 | 2019-09-20 | Permanent magnet linear nonlinear line-control brake device |
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| Country | Link |
|---|---|
| CN (1) | CN110606062A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020096937A1 (en) * | 2001-01-23 | 2002-07-25 | Makoto Nishikimi | Hydraulic pressure control device for vehicle and vehicle brake system using the same |
| CN1595774A (en) * | 2004-07-10 | 2005-03-16 | 华中科技大学 | Short journey high responding linear motor |
| CN102923117A (en) * | 2012-11-23 | 2013-02-13 | 武汉理工大学 | Electromagnetic brake power-assisting system of electric automobile |
| CN103085785A (en) * | 2013-01-29 | 2013-05-08 | 吉林大学 | Braking control mechanism of compound electromechanical braking system |
| CN103754206A (en) * | 2014-01-08 | 2014-04-30 | 同济大学 | Mechanical, electronic and hydraulic brake system |
| CN203958112U (en) * | 2014-06-10 | 2014-11-26 | 重庆示展科技发展中心 | Arm-type autoamtic boosting pedal |
| CN206033106U (en) * | 2016-08-11 | 2017-03-22 | 山西新富升机器制造有限公司 | Driven disc brake device of special voice coil motor of mine winder |
| CN106740750A (en) * | 2016-12-30 | 2017-05-31 | 华南理工大学 | A kind of brake pedal unit of step motor control pedal aperture |
| CN108313036A (en) * | 2018-01-11 | 2018-07-24 | 江苏大学 | A kind of electromagnet brake pedal apparatus and control method |
| CN211494009U (en) * | 2019-09-20 | 2020-09-15 | 开沃新能源汽车集团有限公司 | Permanent magnet linear nonlinear line-control brake device |
-
2019
- 2019-09-20 CN CN201910895310.7A patent/CN110606062A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020096937A1 (en) * | 2001-01-23 | 2002-07-25 | Makoto Nishikimi | Hydraulic pressure control device for vehicle and vehicle brake system using the same |
| CN1595774A (en) * | 2004-07-10 | 2005-03-16 | 华中科技大学 | Short journey high responding linear motor |
| CN102923117A (en) * | 2012-11-23 | 2013-02-13 | 武汉理工大学 | Electromagnetic brake power-assisting system of electric automobile |
| CN103085785A (en) * | 2013-01-29 | 2013-05-08 | 吉林大学 | Braking control mechanism of compound electromechanical braking system |
| CN103754206A (en) * | 2014-01-08 | 2014-04-30 | 同济大学 | Mechanical, electronic and hydraulic brake system |
| CN203958112U (en) * | 2014-06-10 | 2014-11-26 | 重庆示展科技发展中心 | Arm-type autoamtic boosting pedal |
| CN206033106U (en) * | 2016-08-11 | 2017-03-22 | 山西新富升机器制造有限公司 | Driven disc brake device of special voice coil motor of mine winder |
| CN106740750A (en) * | 2016-12-30 | 2017-05-31 | 华南理工大学 | A kind of brake pedal unit of step motor control pedal aperture |
| CN108313036A (en) * | 2018-01-11 | 2018-07-24 | 江苏大学 | A kind of electromagnet brake pedal apparatus and control method |
| CN211494009U (en) * | 2019-09-20 | 2020-09-15 | 开沃新能源汽车集团有限公司 | Permanent magnet linear nonlinear line-control brake device |
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