CN105584310A - Variable-rigidity semi-active suspension - Google Patents
Variable-rigidity semi-active suspension Download PDFInfo
- Publication number
- CN105584310A CN105584310A CN201610009523.1A CN201610009523A CN105584310A CN 105584310 A CN105584310 A CN 105584310A CN 201610009523 A CN201610009523 A CN 201610009523A CN 105584310 A CN105584310 A CN 105584310A
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- Prior art keywords
- stator
- rigidity
- connecting ring
- fixed
- sleeve
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/06—Characteristics of dampers, e.g. mechanical dampers
Abstract
The invention provides a variable-rigidity semi-active suspension which comprises an upper connecting ring, a lower connecting ring, an upper spring support, a lower spring support and a rigidity adjusting device. The upper spring support is fixed to the lower end face of the upper connecting ring. The lower spring support is fixed to the upper end face of the lower connecting ring. The rigidity adjusting device comprises a piston rod, a rotor, a stator and a sleeve. The rotor and the stator are located in the sleeve, and the rotor, the stator and the sleeve are coaxial. The piston rod penetrates the centers of the rotor, the stator and the sleeve. The piston rod is fixed to the lower end of the upper connecting ring. The rotor is fixed to the outer wall of the piston rod. The stator is fixed to the inner wall of the sleeve and a magnet exciting coil is fixed to the stator. A gap is reserved between working surfaces of the rotor and the stator and small teeth which are arranged at equal intervals and are equal in width are distributed in the axial directions of the working surfaces. The magnet exciting coil is connected with a controller. By the adoption of the variable-rigidity semi-active suspension, the rigidity and damping can be controlled independently, the smoothness and comfort of a vehicle can be improved, and vibration is attenuated; and when a control part of the suspension fails, the vibration reducing performance of a passive suspension still can be achieved.
Description
Technical field
The invention belongs to Pendant Structure Of Vehicle field, especially relate to a kind of semi-active suspension of variable rigidity.
Background technology
Suspension is the general name of all the power transmission jockeys between vehicle frame and wheel, and its Main Function is that transmission power and power are turned round, bufferingProduce impulsive force by road surface, and reduce the vibration causing thus, to ensure that automobile can smoothly travel. At present, wide on vehicleGeneral use remain passive suspension, its rigidity and damping are non-adjustable, are only applicable to single road surface situation.
Along with the development of automobile industry, people have proposed more superior semi-active suspension and the Active suspension of performance. Although initiatively outstandingFrame and semi-active suspension can be optimized vehicle ride comfort according to different road surfaces, but Active suspension need to consume a large amount of energy,Be subject to certain restrictions in actual applications. Semi-active suspension is between passive suspension and Active suspension, and it is simple in structure, severalDo not consume vehicle power, and can obtain the performance that approaches Active suspension. But existing semi-active suspension mainly carries out suspension resistanceThe adjusting of Buddhist nun's coefficient, regulates and is confined in the application of air suspension and hydro pneumatic suspension for suspension rate. Electromagnetic spring is a kind of newEmerging electromagnetism absorbing technology, utilizes the physical characteristic of magnetic pole can realize the adjusting of rigidity, and its volume is little, quality is little, response is fastDegree is fast.
At present, Global Environmental Problems and energy problem become increasingly conspicuous, and energy-saving and emission-reduction become the top priority of automobile industry, traditionPassive suspension vibrational energy is fallen by thermal energy consumption, most of intelligent suspension also needs the extra energy to control. IfVibrational energy can be reclaimed and rationally utilizes, can not only effectively improve automobile fuel ecomomy, reduce environmental pollution,Can also suppress vibration, improve Vehicle Driving Cycle ride comfort.
Chinese patent 20110457008.7 discloses a kind of electromagnetic spring shock absorber, utilizes the gravitation of electromagnet and repulsion to suppress carBody vibration, adjusting bodywork height, but its rigidity and damping control coupling can not control respectively, and fail to vibrateEnergy reclaims, and does not also consider in addition " fail-safe " characteristic of suspension, and in the time that control unit breaks down, suspension willCisco unity malfunction.
Summary of the invention
For the above-mentioned problems in the prior art, the invention provides a kind of semi-active suspension of variable rigidity, should half activeSuspension can be realized the control respectively of rigidity, damping, can improve the ride comfort of vehicle and comfortableness, damped vibration; By feedbackCan realize recovery section vibrational energy in vehicle traveling process by device; By helical spring is set, in the time of Suspension control partial failure,Still can reach the damping property of passive suspension.
The present invention realizes above-mentioned technical purpose by following technological means.
The semi-active suspension that rigidity is adjustable, comprises connecting ring, lower connecting ring, upper bracket of the spring, spring lower support and firmDegree tunable arrangement, described upper connecting ring connects vehicle body, and lower connecting ring connects knuckle; Described upper connecting ring lower surface is fixed with bulletSpring upper bracket, lower connecting ring upper surface is fixed with spring lower support; Described rigidity tunable arrangement is positioned at connecting ring and lower connecting ringBetween;
Described rigidity tunable arrangement comprises piston rod, mover, stator and sleeve; Described mover and stator are positioned at sleeve inner, andThree is coaxial; Described piston rod is through the center of mover, stator and sleeve; Described piston rod is fixed on connecting ring lower end; InstituteState mover and be fixed on piston rod outer wall; Described stator is fixed on sleeve lining, on described stator, is fixed with magnet exciting coil; DescribedBetween mover and the working surface of stator, leave gap, and have equidistant wide little tooth along working surface axial distribution; Described excitationCoil connects controller.
Further, described sleeve upper port is provided with the linear bearing coordinating with piston rod.
Further, described mover upper and lower end face is all glued with rubber washer.
Further, between the working surface of described mover and stator, leave the minim gap of 0.1mm.
Further, described stator is attacked threaded fixture block and is bolted on sleeve lining by four.
Further, described rigidity tunable arrangement bottom is coaxially provided with energy feed system; Described piston-rod end extends in energy feed systemPortion;
Described energy feed system comprises permanent magnet, armature winding and linear motor stator electric; Described permanent magnet be attached to piston rod outer wall and withIts motion; Described linear motor stator electric is fixed on spring lower support upper surface; Between described magnet exciting coil and controller, connect energy regenerativeCircuit, described energy regenerative circuit connects armature winding; Described controller also connects body-acceleration sensor and wheel acceleration sensingDevice.
Further, between described upper bracket of the spring and spring lower support, be also fixed with helical spring, described helical spring and rigidityTunable arrangement formation in parallel suspension global stiffness; It is corresponding outstanding that described helical spring rigidity is less than or equal to vehicle body lowest vibration frequencyFrame integral rigidity.
Further, described sleeve is made up of non-magnet material.
Beneficial effect of the present invention:
(1) semi-active suspension of a kind of variable rigidity of the present invention, arranges rigidity tunable arrangement, by regulating exciting currentIt is adjustable that size realizes suspension rate, overcome the shortcoming that general semi-active suspension cannot regulating system rigidity; Energy feed system is set realThe recovery and the suspension damping coefficient that have showed vibrational energy are adjustable, and are the power supply of rigidity tunable arrangement by energy regenerative loop, have improved combustionOil economy; Helical spring is set, and in the time that rigidity tunable arrangement lost efficacy, helical spring still can ensure the normal work of suspension, fullFoot " fail-safe " characteristic.
(2), by linear bearing being installed at sleeve-port, ensure that steady rectilinear motion, stator and the mover gap of piston rod is constant;By four fixture blocks and bolt, stator is fixed in sleeve, has both played fixing effect, also prevented between stator and mover relativeRotate; Rubber washer is set with buffering collision of closed.
Brief description of the drawings
Fig. 1 is the structural representation of suspension system of the present invention.
Fig. 2 is suspension system control structure conceptual scheme of the present invention.
Description of reference numerals is as follows:
The upper connecting ring of 1-, 2-upper bracket of the spring, 3-helical spring, 4-linear bearing, 5-sleeve, 6-bolt, 7-stator, 8-livesStopper rod, 9-mover, 10-magnet exciting coil, 11-rubber washer, 12-sensor, controller, 13-fixture block, 14-stator, 15-electricityPivot winding, 16-permanent magnet, 17-spring lower support, connecting ring under 18-, 19-rigidity tunable arrangement, 20-energy feed system.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is further illustrated, but protection scope of the present invention is not limited to this.
As shown in Figure 1, the semi-active suspension that a kind of rigidity is adjustable, comprises connecting ring 1, lower connecting ring 18, upper bracket of the spring2, spring lower support 17, rigidity tunable arrangement 19 and energy feed system 20; Upper connecting ring 1 connects vehicle body, and lower connecting ring 18 connectsConnect knuckle; Upper connecting ring 1 lower surface is fixed with upper bracket of the spring 2, and lower connecting ring 18 upper surfaces are fixed with spring lower support 17;Rigidity tunable arrangement 19 is between upper connecting ring 1 and lower connecting ring 18;
Rigidity tunable arrangement 19 comprises piston rod 8, mover 9, stator 7 and sleeve 5; Mover 9 and stator 7 are positioned at sleeve 5Inside, and three is coaxial; Sleeve 5 is made up of non-magnet material; Described piston rod 8 is fixed on connecting ring 1 lower end, passesThe center of mover 9, stator 7 and sleeve 5; Described sleeve 5 upper port are provided with the linear bearing 4 coordinating with piston rod 8, withThe steady rectilinear motion, stator and the mover gap that ensure piston rod are constant; Described mover 9 is fixed on piston rod 8 outer walls, along withPiston rod 8 is done axially-movable; Four fixture blocks 13 have been attacked screw thread and have been welded on sleeve 5 inwalls according to stator 7 size uniforms, fixedScrewed hole has been attacked in son 7 upper and lower end faces, and be close to sleeve 5 inwalls by fixture block 13 and place, and fixing by bolt 6; Bolt 6Effect, except fixing, has also prevented from relatively rotating between stator 7 and mover 9. Stator 7 and mover 9 magnetic circuit parts are by good magnetic conductionBody is made, and leaves the small air gap of 0.1mm between the working surface of stator 7 and mover 9, and along working surface axial distribution etc.Apart from wide little tooth; Mover 9 upper and lower end faces are all glued with rubber washer 11, with buffering collision of closed; Magnet exciting coil 10 is fixed on fixedOn son 7, control exciting current size by controller 12. When after magnet exciting coil 10 energising, the magnetic line of force by air gap at stator7 and mover 9 between form closed magnetic circuit, when stator 7 with the little tooth of mover 9 on time, the vertical flank of tooth of the magnetic line of force, is now calledEquilbrium position, axial magnetic pull is zero, only has the gravitation of the vertical flank of tooth; In the time producing relative displacement between the flank of tooth, magnetic line of force distortion,Produce the magnetic pull contrary with direction of displacement, magnetic pull size changes along with the change of exciting current size and flank of tooth offset distance,Until the flank of tooth is aimed at again, be returned to equilbrium position, axial magnetic pull disappears; Can change rigidity by changing exciting current.
Described rigidity tunable arrangement 19 bottoms are coaxially provided with energy feed system 20; Described piston rod 8 ends extend in energy feed system 20Portion; Described energy feed system 20 comprises permanent magnet 16, armature winding 15 and linear motor stator electric 14; Described permanent magnet 16 is attached toPiston rod 18 outer walls with its motion; Described linear motor stator electric 14 is fixed on spring lower support 17 upper surfaces; Described controller12 are also connected with energy regenerative circuit, and described energy regenerative circuit connects armature winding 15; Body-acceleration sensor and wheel acceleration sensingDevice is respectively used to detect vehicle body acceleration and wheel acceleration, and signal is passed to controller 12 processes. When vehicle body is subject to injusticeWhen road excitation, this device can recovery section vibrational energy, and by energy regenerative circuit, the energy of recovery can be the adjustable dress of rigidityPut 19 power supplies, reduce vehicle body energy consumption; By regulating energy regenerative circuit, can realize the adjusting of electromagnetic linear motor damping force, therebyThe damping that realizes suspension is adjustable.
The course of work:
When Vehicle Driving Cycle, the road conditions of Uneven road excitation and all kinds of complexity cause between vehicle body and wheel and produce relative motion, fromAnd make piston rod 8 produce displacement with respect to sleeve 5, and then make mover 9 and the little tooth of stator 7 working surfaces also produce phaseTo displacement, magnet exciting coil 10 is switched on, and the magnetic line of force that forms closed magnetic circuit between air gap produces distortion, thereby produces and flank of tooth displacementThe magnetic pull of opposite direction, pulling force size increases along with the increase of exciting current and offset distance; Be subject to the impact of magnetic pull,Stator 7 constantly reduces with the relative displacement of mover 9, until get back to equilbrium position. On the other hand, because permanent magnet 16 is fixed onOn piston rod 8, in the time that piston rod 8 is done axially-movable, permanent magnet 16 produces relative motion, armature winding with armature winding 1515 produce induced electromotive force, by energy regenerative circuit, the electric energy of armature winding 15 interior generations can be reclaimed; Controller 12 canRegulate the damping of energy regenerative circuit, thereby the electromagnetic damping power between permanent magnet 16 and armature winding 15 is also controlled, i.e. semi-active suspensionDamped coefficient controlled.
As shown in Figure 2, from the control structure of suspension, be subject to Uneven road and encourage while causing body vibrations, vehicle body accelerationThe vehicle body acceleration obtaining and tire acceleration signal are passed to controller 12 by sensor and wheel acceleration sensor, namelyECU. Vibrational energy is converted into electric energy by linear electric motors, and be transferred to energy regenerative circuit, and energy regenerative circuit is by the induced electricity fluxion producingValue also sends ECU to, and ECU, through comprehensive computing, draws best stiffness coefficient and damped coefficient, and changes by control signalBecome the damping size of energy regenerative circuit; The electrical energy transfer that energy regenerative circuit transforms recovering energy is to rigidity tunable arrangement 19, by changingThe exciting current of rigidity tunable arrangement 19, the integral rigidity of change suspension. When rigidity tunable arrangement 19 lost efficacy, cause stator 7Excessive with mover 9 side-play amounts, helical spring 3 still can ensure the normal work of suspension, and rubber washer 11 can buffering collision of closed.
Described embodiment is preferred embodiment of the present invention, but the present invention is not limited to above-mentioned embodiment, is not deviating from thisIn the situation of essence of an invention content, any apparent improvement, replacement or modification that those skilled in the art can make are equalBelong to protection scope of the present invention.
Claims (8)
1. the adjustable semi-active suspension of rigidity, is characterized in that, comprises connecting ring (1), lower connecting ring (18), bulletSpring upper bracket (2), spring lower support (17) and rigidity tunable arrangement, described upper connecting ring (1) connects vehicle body, lower connecting ring(18) connect knuckle; Described upper connecting ring (1) lower surface is fixed with upper bracket of the spring (2), lower connecting ring (18) upper endFace is fixed with spring lower support (17); Described rigidity tunable arrangement is positioned between connecting ring (1) and lower connecting ring (18);
Described rigidity tunable arrangement comprises piston rod (8), mover (9), stator (7) and sleeve (5); Described mover (9)With stator (7) is positioned at sleeve (5) inside, and three is coaxial; Described piston rod (8) is through mover (9), stator (7)And the center of sleeve (5); Described piston rod (8) is fixed on connecting ring (1) lower end; Described mover (9) is fixed on workStopper rod (8) outer wall; Described stator (7) is fixed on sleeve (5) inwall, and described stator is fixed with magnet exciting coil on (7)(10); Between the working surface of described mover (9) and stator (7), leave gap, and have equidistantly along working surface axial distributionWide little tooth; Described magnet exciting coil (10) connects controller (12).
2. the adjustable semi-active suspension of a kind of rigidity according to claim 1, is characterized in that, on described sleeve (5)Port is provided with the linear bearing (4) coordinating with piston rod (8).
3. the adjustable semi-active suspension of a kind of rigidity according to claim 1, is characterized in that, on described mover (9)Lower surface is all glued with rubber washer (11).
4. the adjustable semi-active suspension of a kind of rigidity according to claim 1, is characterized in that, described mover (9) andBetween the working surface of stator (7), leave the minim gap of 0.1mm.
5. the adjustable semi-active suspension of a kind of rigidity according to claim 1, is characterized in that, described stator (7) is logicalCross four and attack threaded fixture block (13) and bolt (6) is fixed on sleeve (5) inwall.
6. the adjustable semi-active suspension of a kind of rigidity according to claim 1, is characterized in that, described rigidity tunable arrangementBottom is coaxially provided with energy feed system; Described piston rod (8) end extends energy feed system inside;
Described energy feed system comprises permanent magnet (16), armature winding (15) and linear motor stator electric (14); Described permanent magnet (16)Be attached to piston rod (18) outer wall and with its motion; Described linear motor stator electric (14) is fixed on spring lower support (17) upper endFace; Between described magnet exciting coil (10) and controller (12), connect energy regenerative circuit, described energy regenerative circuit connects armature winding (15);Described controller (12) also connects body-acceleration sensor and wheel acceleration sensor.
7. the adjustable semi-active suspension of a kind of rigidity according to claim 1, is characterized in that, described upper bracket of the spring (2)And between spring lower support (17), be also fixed with helical spring (3), described helical spring (3) structure in parallel with rigidity tunable arrangementBecome suspension global stiffness; The rigidity of described helical spring (3) is less than or equal to the corresponding suspension integral rigidity of vehicle body lowest vibration frequency.
8. the adjustable semi-active suspension of a kind of rigidity according to claim 1, is characterized in that, described sleeve (5) byNon-magnet material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610009523.1A CN105584310A (en) | 2016-01-07 | 2016-01-07 | Variable-rigidity semi-active suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610009523.1A CN105584310A (en) | 2016-01-07 | 2016-01-07 | Variable-rigidity semi-active suspension |
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| CN105584310A true CN105584310A (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610009523.1A Pending CN105584310A (en) | 2016-01-07 | 2016-01-07 | Variable-rigidity semi-active suspension |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108725121A (en) * | 2018-07-26 | 2018-11-02 | 西南交通大学 | A kind of permanent magnetism and electromagnetism are crosslinked the energy active suspension actuator of electric of floating type |
| CN109505914A (en) * | 2018-12-25 | 2019-03-22 | 重庆交通大学 | Stiffness variable adaptive damping semi-active suspension |
| CN110481257A (en) * | 2019-07-08 | 2019-11-22 | 江苏大学 | A kind of steering feed energy suspension based on switching magnetic-resistance linear rotating motor |
| CN110744982A (en) * | 2019-12-02 | 2020-02-04 | 西安科技大学 | Double-linear-motor energy-feedback type active suspension actuator and control method thereof |
| CN112118975A (en) * | 2019-02-12 | 2020-12-22 | A·V·加夫里洛夫 | Vehicle suspension with adjustable chassis clearance |
| CN112198046A (en) * | 2020-09-28 | 2021-01-08 | 北京理工大学 | Automatic loading rod assembling device for SHPB (split Homey bar) test |
| CN112223972A (en) * | 2019-08-27 | 2021-01-15 | 吉林大学 | Double-cross-arm type suspension helical spring failure emergency protection control system and method |
| CN113374824A (en) * | 2020-02-25 | 2021-09-10 | 沃尔沃汽车公司 | Electromagnetic suspension spring |
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| JP2000272320A (en) * | 1999-03-22 | 2000-10-03 | Hyundai Motor Co Ltd | Active suspension system for vehicle |
| CN101065259A (en) * | 2004-11-24 | 2007-10-31 | 丰田自动车株式会社 | Suspension device for vehicle |
| CN103185098A (en) * | 2011-12-31 | 2013-07-03 | 上海汽车集团股份有限公司 | Electromagnetic spring vibration absorber |
| CN104044426A (en) * | 2014-06-10 | 2014-09-17 | 江苏大学 | Stiffness-variable electromagnetic energy feedback suspension |
| CN203926233U (en) * | 2014-07-15 | 2014-11-05 | 九江学院 | The resonant hydraulic filter of a kind of electromagnetic type automated variable rigidity |
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2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000272320A (en) * | 1999-03-22 | 2000-10-03 | Hyundai Motor Co Ltd | Active suspension system for vehicle |
| CN101065259A (en) * | 2004-11-24 | 2007-10-31 | 丰田自动车株式会社 | Suspension device for vehicle |
| CN103185098A (en) * | 2011-12-31 | 2013-07-03 | 上海汽车集团股份有限公司 | Electromagnetic spring vibration absorber |
| CN104044426A (en) * | 2014-06-10 | 2014-09-17 | 江苏大学 | Stiffness-variable electromagnetic energy feedback suspension |
| CN203926233U (en) * | 2014-07-15 | 2014-11-05 | 九江学院 | The resonant hydraulic filter of a kind of electromagnetic type automated variable rigidity |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108725121A (en) * | 2018-07-26 | 2018-11-02 | 西南交通大学 | A kind of permanent magnetism and electromagnetism are crosslinked the energy active suspension actuator of electric of floating type |
| CN108725121B (en) * | 2018-07-26 | 2023-06-13 | 西南交通大学 | Permanent magnet and electromagnetic cross-linked suspension type energy feedback type active suspension actuator |
| CN109505914A (en) * | 2018-12-25 | 2019-03-22 | 重庆交通大学 | Stiffness variable adaptive damping semi-active suspension |
| CN112118975A (en) * | 2019-02-12 | 2020-12-22 | A·V·加夫里洛夫 | Vehicle suspension with adjustable chassis clearance |
| CN110481257A (en) * | 2019-07-08 | 2019-11-22 | 江苏大学 | A kind of steering feed energy suspension based on switching magnetic-resistance linear rotating motor |
| CN110481257B (en) * | 2019-07-08 | 2022-12-16 | 江苏大学 | Steering energy feedback suspension based on switch reluctance linear rotating motor |
| CN112223972B (en) * | 2019-08-27 | 2021-12-07 | 吉林大学 | Double-cross-arm type suspension helical spring failure emergency protection control system and method |
| CN112223972A (en) * | 2019-08-27 | 2021-01-15 | 吉林大学 | Double-cross-arm type suspension helical spring failure emergency protection control system and method |
| CN110744982A (en) * | 2019-12-02 | 2020-02-04 | 西安科技大学 | Double-linear-motor energy-feedback type active suspension actuator and control method thereof |
| CN110744982B (en) * | 2019-12-02 | 2022-08-02 | 西安科技大学 | Double-linear-motor energy-feedback type active suspension actuator and control method thereof |
| CN113374824A (en) * | 2020-02-25 | 2021-09-10 | 沃尔沃汽车公司 | Electromagnetic suspension spring |
| CN112198046B (en) * | 2020-09-28 | 2022-02-22 | 北京理工大学 | Automatic loading rod assembling device for SHPB (split Homey bar) test |
| CN112198046A (en) * | 2020-09-28 | 2021-01-08 | 北京理工大学 | Automatic loading rod assembling device for SHPB (split Homey bar) test |
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Application publication date: 20160518 |