CN114704576B - Damping shock absorber is adjusted to neodymium iron boron magnetism iron - Google Patents

Damping shock absorber is adjusted to neodymium iron boron magnetism iron Download PDF

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Publication number
CN114704576B
CN114704576B CN202210502237.4A CN202210502237A CN114704576B CN 114704576 B CN114704576 B CN 114704576B CN 202210502237 A CN202210502237 A CN 202210502237A CN 114704576 B CN114704576 B CN 114704576B
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current
height
main controller
iron boron
piston rod
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CN202210502237.4A
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CN114704576A (en
Inventor
王征
禹世博
王海波
刘佳
赵建新
王东波
秦硕
张钊
古邵楠
董丹
王艳山
张迅
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Baoding Dongli Machinery Co ltd
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Baoding Dongli Machinery Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2222/00—Special physical effects, e.g. nature of damping effects
    • F16F2222/06—Magnetic or electromagnetic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
    • F16F2228/06—Stiffness
    • F16F2228/066—Variable stiffness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/0047—Measuring, indicating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/08—Sensor arrangement

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The invention discloses a neodymium iron boron magnet adjusting damping shock absorber which comprises a body, a detection unit and a control unit, wherein shock absorption oil is arranged in the body, the detection unit is used for detecting the posture of a vehicle body, the control unit is used for controlling the body, the detection unit and a traveling crane host used for sending rotating speed and vehicle speed data are connected with the control unit, the body comprises a cylinder body, a piston rod, an adjusting coil and a neodymium iron boron magnet piston head, the neodymium iron boron magnet piston head is arranged in the cylinder body and connected with one end of the piston rod, the other end of the piston rod penetrates through the cylinder body, the adjusting coil is wound on the outer side of the cylinder body, and the adjusting coil is connected with the control unit. By adopting the neodymium iron boron magnet damping adjustment shock absorber, the current magnitude and direction of the adjusting coil are adjusted in a negative feedback mode according to the posture of the vehicle body and the vehicle speed data, so that the damping force of the shock absorber is automatically and quickly adjusted according to the change of the electromagnetic magnitude, and the response speed of the shock absorber is improved.

Description

Damping adjustment shock absorber with neodymium iron boron magnet
Technical Field
The invention relates to the technical field of automobile parts, in particular to a damping adjusting shock absorber with neodymium iron boron magnets.
Background
After damping bumper shock absorber is decided in the installation to the car, can not be at the in-process automatically regulated bumper shock absorber damping force that traveles, need constantly stop, adjust the bumper shock absorber damping force according to the place ahead road conditions, prior art adopts single parameter to carry out the open-loop control of bumper shock absorber, and the damping force that leans on single shock-absorbing oil to provide makes the shock attenuation reaction slow simultaneously, leads to the automobile to leap and falls to the ground the shock attenuation effect not good, causes not good impression of traveling.
Disclosure of Invention
The invention aims to provide a neodymium iron boron magnet damping adjustment shock absorber which negatively feeds back and adjusts the current magnitude and direction of an adjusting coil according to the posture of a vehicle body and the speed data, so that the damping force of the shock absorber is automatically adjusted by changing the magnitude of electromagnetism, and the reaction speed of the shock absorber is improved.
In order to achieve the purpose, the invention provides a neodymium iron boron magnet adjusting damping shock absorber which comprises a body, a detection unit used for detecting the posture of a vehicle body and a control unit used for controlling the body, wherein the detection unit and a traveling crane used for sending rotating speed and vehicle speed data are connected with the control unit, the body comprises a cylinder body, a piston rod, an adjusting coil and a neodymium iron boron magnet piston head, the neodymium iron boron magnet piston head is arranged in the cylinder body and connected with one end of the piston rod, the other end of the piston rod penetrates through the cylinder body, the adjusting coil is wound on the outer side of the cylinder body, and the adjusting coil is connected with the control unit.
Preferably, the detecting unit includes height sensor and level sensor, height sensor is provided with four and sets up the terrain clearance that is used for detecting four wheels respectively with four wheel relatively, and level sensor is fixed in and is used for detecting automobile body inclination on the vehicle bottom dish, calculates the level according to height sensor and speed of driving, and when the level exceeded and sets for the threshold value, the electric current of adjusting coil was the grow of multiple.
Preferably, the control unit comprises a current output module and a main controller used for calculating and analyzing, the main controller is connected with the traveling crane host and used for acquiring rotating speed and speed data, the height sensor and the level sensor are both connected with the main controller, the main controller is connected with the current output module, and the current output module is connected with the adjusting coil.
Preferably, the relationship formula between the current of the adjusting coil and the detected height is as follows:
I＝kh
wherein I is the current of the adjusting coil, k is a proportionality coefficient, and h is the detection height;
the height data of the four height sensors are calculated to obtain a first inclination angle, the average value of the first inclination angle and a second inclination angle detected by the level sensor is an actual horizontal inclination angle, and when the actual horizontal inclination angle is larger than a set angle, the main controller controls the shock absorber at the low end to stretch.
Preferably, when the vehicle speed is instantaneously reduced and the rotating speed is unchanged, the main controller judges that the vehicle body is in a flying state, the main controller sends a stretching signal to the current output module, so that the current output module outputs the maximum forward current to the regulating coil, and the neodymium iron boron magnet piston head is pulled upwards to enable the piston rod to quickly reach a stretching state;
when the vehicle speed and the rotating speed are both increased instantly, the main controller judges that the vehicle body falls to the ground, the main controller sends a ground compression signal to the current output module,
the output current of the current output module is changed into two stages:
the first stage is as follows: the current is reduced to the set current according to the compression proportion, so that the piston rod is compressed to the set position in proportion;
and a second stage: the current increases to the horizontal current according to the stretching proportion, so that the piston rod stretches to the horizontal position.
Therefore, the damping force of the damping device is automatically adjusted by changing the electromagnetic force according to the current magnitude and direction of the adjusting coil adjusted in real time according to the inclination angle and height of the vehicle body by adopting the neodymium iron boron magnet adjusting damping shock absorber. Meanwhile, the state of the automobile body is judged by detecting the data of the speed and the rotating speed in real time, the current size and the direction are adjusted in time, and the comfort level of the automobile when the automobile lands after leap is improved.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic structural view of a damping-adjusting shock absorber with neodymium iron boron magnet according to the present invention.
Reference numerals
1. A body; 11. a cylinder body; 12. a piston rod; 13. an adjustment coil; 14. a neodymium iron boron magnet piston head; 2. a detection unit; 21. a height sensor; 22. a level sensor; 3. a control unit; 31. a main controller; 32. a current output module; 4. the driving host.
Detailed Description
Examples
Fig. 1 is a schematic structural view of an ndfeb magnet-regulated damping shock absorber according to the present invention, and as shown in fig. 1, the ndfeb magnet-regulated damping shock absorber includes a body 1, a detection unit 2 for detecting a posture of a vehicle body, and a control unit 3 for controlling the body.
The shock absorption oil is arranged in the body 1 to provide main shock absorption damping force, the shock absorption principle belongs to the prior art, and the specific structure and principle of the shock absorption principle are not described in detail. The body 1 comprises a cylinder body 11, a piston rod 12, an adjusting coil 13 and a neodymium iron boron magnet piston head 14, the neodymium iron boron magnet piston head 14 is arranged in the cylinder body 11 and connected with one end of the piston rod 12, the other end of the piston rod 12 penetrates through the cylinder body 11, the adjusting coil 13 is wound on the outer side of the cylinder body 11, and the adjusting coil 13 is connected with the control unit 3. The detection unit 2 comprises a height sensor 21 and four level sensors 22, the height sensor 21 is provided with four ground clearance heights which are respectively arranged opposite to the four wheels and used for detecting the four wheels, the level sensors 22 are fixed on a chassis and used for detecting the inclination angle of a vehicle body, the four level sensors 22 are arranged, the level height is calculated according to the height sensor 21 and the traveling speed, when the level height exceeds a set threshold value (for example, exceeds 1 meter), the current of the adjusting coil 13 is increased by multiple, the integral resistance is increased by approximate multiple, and the safety in flight is improved. The control unit 3 comprises a current output module 32 and a main controller 31 for calculation and analysis, and the main controller 31 is connected with the traveling main machine 4 and used for acquiring rotating speed and speed data, so that the state of the vehicle body can be analyzed conveniently in a later period. The height sensor 21 and the level sensor 22 are connected to the main controller 21, and the detected height data and inclination data are inputted to the main controller 31 for calculation. The main controller 31 is connected with a current output module 32, and the current output module 32 is connected with the adjusting coil 13 for providing currents with different directions and magnitudes.
The current of the adjustment coil 13 is related to the detected height by the following equation:
I＝kh
wherein, I is the current of the adjusting coil, k is a proportionality coefficient, and h is the detection height. The height data of the four height sensors are calculated to obtain a first inclination angle, the average value of the first inclination angle and a second inclination angle detected by the level sensor is an actual horizontal inclination angle, and when the actual horizontal inclination angle is larger than a set angle, the main controller 31 controls the shock absorber at the low end to stretch. When the automobile is inclined during turning, the main controller controls the corresponding shock absorbers to perform stretching or compressing actions so that the automobile is kept horizontal.
When the vehicle speed is instantaneously reduced and the rotating speed is unchanged, the main controller 31 judges that the vehicle body is in a flying state, the main controller 31 sends a stretching signal to the current output module, the current output module 32 outputs the maximum forward current to the adjusting coil 13, and the neodymium iron boron magnet piston head 14 is pulled upwards, so that the piston rod 12 quickly reaches the limit stretching position.
When the speed of a motor vehicle and the rotational speed all increase instantaneously, main controller 31 judges that the automobile body falls to the ground, and main controller 31 sends and falls to the ground compression signal to current output module 32, and current output module 32 output current changes and is divided into two stages:
the first stage is as follows: the current is reduced proportionally to the set current, causing the piston rod 12 to compress proportionally to the set position.
And a second stage: the current increases to the horizontal current according to the stretching proportion, so that the piston rod 12 is slowly stretched to the horizontal position, and the comfort level is improved.
Therefore, the damping force of the neodymium iron boron magnet adjusting shock absorber is adjusted automatically by changing the electromagnetic value according to the current value and direction of the adjusting coil adjusted in real time according to the inclination angle and height of the vehicle body. Meanwhile, the state of the automobile body is judged by detecting the data of the speed and the rotating speed in real time, the current size and the direction are adjusted in time, and the comfort level of the automobile when the automobile lands after leap is improved.
Finally, it should be noted that: the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the disclosed embodiments without departing from the spirit and scope of the present invention.

Claims (1)

1. The utility model provides a damping bumper shock absorber is adjusted to neodymium iron boron magnetism iron boron, includes the body, this internal damping oil that is provided with, its characterized in that: the body comprises a cylinder body, a piston rod, an adjusting coil and a neodymium iron boron magnet piston head, the neodymium iron boron magnet piston head is arranged in the cylinder body and is connected with one end of the piston rod, the other end of the piston rod penetrates through the cylinder body, the adjusting coil is wound on the outer side of the cylinder body, and the adjusting coil is connected with the control unit;
the detection unit comprises a height sensor and a horizontal sensor, the height sensor is provided with four height sensors and four horizontal sensors, the four height sensors are respectively arranged opposite to the four wheels and used for detecting the ground clearance of the four wheels, the horizontal sensor is fixed on a chassis and used for detecting the inclination angle of a vehicle body, the horizontal height is calculated according to the height sensor and the speed of a vehicle, and when the horizontal height exceeds a set threshold value, the current of the adjusting coil is increased by multiple;
the control unit comprises a current output module and a main controller for calculation and analysis, the main controller is connected with a traveling crane host and used for acquiring rotating speed and speed data, the height sensor and the level sensor are both connected with the main controller, the main controller is connected with the current output module, and the current output module is connected with the adjusting coil;
the relation formula of the current of the adjusting coil and the detection height is as follows:
I＝kh
wherein I is the current of the adjusting coil, k is a proportionality coefficient, and h is the detection height;
calculating height data of the four height sensors to obtain a first inclination angle, wherein the average value of the first inclination angle and a second inclination angle detected by the horizontal sensor is an actual horizontal inclination angle, and when the actual horizontal inclination angle is larger than a set angle, the main controller controls the shock absorber at the low end to stretch;
when the vehicle speed is instantaneously reduced and the rotating speed is unchanged, the main controller judges that the vehicle body is in a flying state, the main controller sends a stretching signal to the current output module, so that the current output module outputs the maximum forward current to the regulating coil, and the neodymium iron boron magnet piston head is pulled upwards, so that the piston rod quickly reaches the stretching state;
when the vehicle speed and the rotating speed are both increased instantly, the main controller judges that the vehicle body falls to the ground, the main controller sends a ground compression signal to the current output module,
the output current of the current output module is changed into two stages:
the first stage is as follows: the current is reduced to the set current according to the compression ratio, so that the piston rod is compressed to the set position in a ratio manner;
and a second stage: the current increases to the horizontal current according to the stretching proportion, so that the piston rod stretches to the horizontal position.
CN202210502237.4A 2022-05-09 2022-05-09 Damping shock absorber is adjusted to neodymium iron boron magnetism iron Active CN114704576B (en)

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3924918C2 (en) * 1988-07-29 2002-07-04 Denso Corp Position control device, vehicle suspension hereby and position detector therefor
CN100484787C (en) * 2005-04-14 2009-05-06 重庆大学 Controllable automobile magnetic rhological absorber with height adjusting function
US8063498B2 (en) * 2009-02-27 2011-11-22 GM Global Technology Operations LLC Harvesting energy from vehicular vibrations
CN102935794B (en) * 2012-04-19 2015-10-14 浙江金刚汽车有限公司 Vehicle body active balance shock mitigation system and control method
CN105703595A (en) * 2015-12-17 2016-06-22 云杉智慧新能源技术有限公司 Automobile and electromagnetic suspension system
CN206309833U (en) * 2016-12-21 2017-07-07 上乘精密科技（苏州）有限公司 Magnetoelectricity reaction equation variable-damp vibration damper
CN113320343B (en) * 2021-06-03 2022-11-04 泰安航天特种车有限公司 Independent suspension system of amphibious vehicle and control method

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