CN104802680A - Semi-active type vehicle seat vibration absorbing device with magneto-rheological elastomer - Google Patents
Semi-active type vehicle seat vibration absorbing device with magneto-rheological elastomer Download PDFInfo
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- CN104802680A CN104802680A CN201510255891.XA CN201510255891A CN104802680A CN 104802680 A CN104802680 A CN 104802680A CN 201510255891 A CN201510255891 A CN 201510255891A CN 104802680 A CN104802680 A CN 104802680A
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- vehicle
- magnetic
- magneto
- working barrel
- damping
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/50—Seat suspension devices
- B60N2/54—Seat suspension devices using mechanical springs
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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
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/3605—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by their material
- F16F1/361—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by their material comprising magneto-rheological elastomers [MR]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Vehicle Body Suspensions (AREA)
- Seats For Vehicles (AREA)
- Fluid-Damping Devices (AREA)
Abstract
A semi-active type vehicle seat vibration absorbing device with a magneto-rheological elastomer comprises a lower excitation coil, a working barrel, a magneto-rheological elastomer, an upper excitation coil, a spiral spring, a protection cover, a seal ring, an upper support, a piston rod, a piston, an adjusting shim, a gland nut, an upper excitation core, a lower excitation core, control wires, a controller, a signal wire, a vehicle height sensor, a magnetism isolating bottom plate and a lower support, wherein the excitation coils and the excitation cores which are used as the loading sources of an electromagnetic field are mounted in the working barrel, and the magneto-rheological elastomer is positioned between the upper excitation core and the lower excitation core; the vibrating signal of the vehicle body is transmitted to the controller by the vehicle height sensor; the size of current in the excitation coils can be changed by the controller through the control wires, and magnetic field strengths in the excitation coils and the excitation core are changed as a result, so that the rigidity and the damping of the magneto-rheological elastomer are regulated in real time; the spiral spring can assist the vibration absorbing device in absorbing and reducing vibrating energy. The semi-active type vehicle seat vibration absorbing device with the magneto-rheological elastomer is provided through the joint action of the spiral spring with fixed rigidity and damping and the magneto-rheological elastomer with adjustable rigidity and damping, so that the riding comfort of the vehicle is improved.
Description
Technical field
The present invention relates to a kind of rigidity and the adjustable seat shock attenuation unit of damping, particularly relate to a kind of semi-active type magnetic rheology elastic body seat shock attenuation unit, it have employed a kind of novel intelligent composite---and magnetic rheology elastic body, as damping medium, belongs to Vehicle damper and technical field of safety protection.
Background technology
Along with the development of China's Vehicle Industry and the raising of Living consumption, the travelling comfort of vehicle more and more comes into one's own.The design of seat directly has influence on the travelling comfort of chaufeur and passenger, the seat of cushioning performance difference may cause fatigue and the occupational disease of chaufeur, even can affect the driving safety of vehicle, therefore improve the pith that the vibration damping of seat and absorbing performance become Car design.At present, seat shock attenuation unit mostly is passive hydraulic vibration absorber or helical spring shock absorber, and cannot regulate rigidity, damping, traveling comfort is poor; And active air air bag damping device structure is complicated, produce and maintenance cost high.In the last few years, the fast development of magnetic rheology elastic body novel intelligent material was that Car design and manufacture provide new thinking.Magnetic rheology elastic body is a kind of intelligent composite that can regulate rigidity, damping by changing electromagnetic intensity, can be used in developing the structure with self adaptation rigidity, damping force characteristics.And magnetic rheology elastic body also have fast response time (millisecond magnitude), good stability, without the need to sealing, the advantage such as easy to use.
Summary of the invention
1, goal of the invention:
The object of the present invention is to provide a kind of semi-active type magnetic rheology elastic body seat shock attenuation unit, mainly based on the extruding mode of operation of magnetic rheology elastic body, Oscillation Amplitude and the frequency of vehicle body is judged by the signal of vehicle height sensor, change electromagnetic field power and with or without the rigidity and the damping that regulate magnetic rheology elastic body, improve travelling comfort and the safety of seat, improve the driving impression of vehicle.
2, technical scheme:
Utilize magneto-rheological elastomer intelligent material stiffness and the adjustable characteristic of damping; by electromagnetic field strong and weak and with presence or absence of change a kind of semi-active type magnetic rheology elastic body seat shock attenuation unit controlled; see accompanying drawing, this device comprise lower excitation coil, working barrel, magnetic rheology elastic body, upper excitation coil, coil spring, protective case, seal ring, upper bracket, piston rod, piston, adjustment pad, hold-down nut, upper field core, lower field core, control line, controller, signal wire (SW), vehicle height sensor, every magnetic base plate, undersetting.Position annexation between them is: in working barrel, be mounted with the excitation coil and the field core that load source as electromagnetic field, magnetic rheology elastic body is between upper and lower field core; Vehicle height sensor is transferred to controller the vibration signal of vehicle body; Controller can change the size of current in excitation coil by control line, cause the magnetic field power in excitation coil and field core to change, thus regulates rigidity and the damping of magnetic rheology elastic body in real time; Coil spring can be assisted shock attenuation unit to absorb and be reduced vibrational energy.By the combined action of the magnetic rheology elastic body of the coil spring of rigidity of fixation, damping and adjustable rigidity, damping, form a set of semi-active type magnetic rheology elastic body seat shock attenuation unit, thus improve the ride comfort of vehicle.
Described upper excitation coil and upper and lower excitation coil, by the coiling of enamel-cover copper conductor, are self-made components, and its function is as elect magnetic field current load source and regulates electromagnetic intensity.
Described upper field core and lower field core are self-made components, and select the material that alloy steel or other intensity and magneto-conductivity are all very high to make, its function is the loading source as electromagnetic field.
Described magnetic rheology elastic body is solid cylinder, for self-made components, adopt the carbonyl iron dust adding micron order diameter in silicone rubber matrix to make, magnetic rheology elastic body prepared by this mode is softer, rigidity and damping adjustability high, its function is vibration damping and the absorbing of seat.
Described working barrel is rounded cylindrical part, is self-made components, which is provided with wiring holes, selects non-magnetic aluminum alloy material to make, and its function cuts off magnetic field and provides working space for piston.
Described coil spring is commercial gauge member, and concrete specification is determined according to the size of working barrel and piston rod, and its function is the support of piston and the vibration damping of seat and absorbing.
Described protective case is self-made components, is ordinary steel Casting Parts, and its function is dust-proof and protection working barrel.
Described upper bracket is self-made components, adopts ordinary steel material to make, the size that concrete size is installed according to protective case, piston rod and vehicle and determining, and its function is connection shock attenuation unit and seat.
Described undersetting is self-made components, adopts ordinary steel material, the size that concrete size is installed according to working barrel 2 and vehicle and determine, and its function is connection shock attenuation unit and seat.
Described controller is commercial, and model is 32 STM32F205RF microprocessors, and ram in slice is 128KB, and in sheet, ROM is 512KB, can realize signal transacting and control by programming.
Described vehicle height sensor is commercial, and model is grand wound RQH-10030, is arranged between the vehicle body of vehicle and vehicle bridge, and its function is used to measure the frequency and amplitude that vehicle body and vehicle bridge relative height change.
Described is self-made components every magnetic base plate, adopts non-magnetic aluminum alloy materials to make, and concrete size is determined according to the size of working barrel and lower field core, and its function cuts off magnetic field, bottom.
3, the present invention " a kind of semi-active type magnetic rheology elastic body seat shock attenuation unit ", its advantage is as follows:
(1). the shock attenuation unit of the present invention's design works under the squeeze mode of magnetic rheology elastic body, and degree of amplitude modulation is large, absorbing and cushioning performance good.
(2). structure is simple, and energy consumption is low, fast response time, can realize continuous control, can meet the damping requirements on the right rough and uneven in surface road surface of seat.
(3). process and assemble is convenient, and seal request is low, stable performance, and maintenance cost is low.
In a word, this device can realize the real-time adjustment of seat shock attenuation unit rigidity and damping, reduces the impact of bad road on vehicle ride comfort, improves the impression of vehicle driver and crew, improves travelling comfort and the safety of vehicle.
Accompanying drawing explanation
Accompanying drawing is the sectional structure schematic diagram of a kind of semi-active type magnetic rheology elastic body of the present invention seat shock attenuation unit.
In figure, nomenclature is as follows: excitation coil under 1-, 2-working barrel, 3-magnetic rheology elastic body, the upper excitation coil of 4-, 5-coil spring, 6-protective case, 7-seal ring, 8-upper bracket, 9-piston rod, 10-piston, 11-adjust field core under pad, 12-hold-down nut, the upper field core of 13-, 14-, 15-control line, 16-controller, 17-signal wire (SW), 18-vehicle height sensor, 19-every magnetic base plate, 20-undersetting.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail:
As shown in drawings; a kind of magnetic rheology elastic body semi-active type of the present invention seat shock attenuation unit, comprises with lower component: lower excitation coil 1, working barrel 2, magnetic rheology elastic body 3, upper excitation coil 4, coil spring 5, protective case 6, seal ring 7, upper bracket 8, piston rod 9, piston 10, adjustment pad 11, hold-down nut 12, upper field core 13, lower field core 14, control line 15, controller 16, signal wire (SW) 17, vehicle height sensor 18, every magnetic base plate 19 and undersetting 20.Position annexation between them is: upper bracket 8 welds with protective case 6 and is fixed together; Seal ring 7 is for the sealing of piston rod 9; Piston rod 9 and piston 10 pass through to adjust pad 11, hold-down nut 12 links together, and are positioned in working barrel 2; Piston rod 9 and upper bracket 8 are connected; Piston 10 contacts with coil spring 5; Coil spring 5 contacts with upper field core 13; Upper excitation coil 4 and lower excitation coil 1 are wrapped on field core 13 and lower field core 14 respectively; Magnetic rheology elastic body 3 is placed between field core 13 and lower field core 14; Contact with lower field core 14 every magnetic base plate 19; Undersetting 20 is installed on the bottom of working barrel 2; Controller 16 is connected with upper excitation coil 4 with lower excitation coil 1 by control line 15; Vehicle height sensor 18 is connected with controller 16 by signal wire (SW) 17.
Described lower excitation coil 1 and upper excitation coil 4 are self-made components, by the coiling of enamel-cover copper conductor;
Described working barrel 2 is rounded cylindrical part, for non-magnetic aluminum alloy material makes;
Described magnetic rheology elastic body 3 is self-made components, and adopt the carbonyl iron dust adding micron order diameter in silicone rubber matrix to make, magnetic rheology elastic body prepared by this mode is softer, rigidity and damping adjustability high;
Described coil spring 5 is commercial gauge member, and concrete specification is determined according to the size of working barrel 2 and piston rod 9;
Described protective case 6 is self-made components, is ordinary steel Casting Parts;
Described seal ring 7 is commercial, and concrete specification is determined according to the size of working barrel 2 and piston rod 9;
Described upper bracket 8 is self-made components, and adopt ordinary steel material to make, concrete size is determined according to protective case 6 and piston rod 9;
Described piston rod 9 is self-made components, is ordinary steel machined piece;
Described piston 10 is self-made components, is ordinary steel machined piece;
Described adjustment pad 11 is commercial gauge member, and concrete specification is determined according to the size of piston rod 9;
Described hold-down nut 12 is commercial gauge member, and concrete specification is determined according to the size of piston rod 9;
Described upper field core 13 and lower field core 14 are self-made components, and Material selec-tion alloy steel or other intensity and all very high material of magneto-conductivity make;
Described control line 15 is commercial, is ordinary copper core wire;
Described controller 16 is commercial, and model is 32 STM32F205RF microprocessors, and ram in slice is 128KB, and in sheet, ROM is 512KB, can realize signal transacting and control by programming;
Described signal wire (SW) 17 is commercial, is ordinary copper core wire, determines according to the model of vehicle height sensor 18;
Described vehicle height sensor 18 is commercial, and model is grand wound RQH-10030;
Described is self-made components every magnetic base plate 19, adopts non-magnetic aluminum alloy materials to make, and concrete size is determined according to the size of working barrel 2 and lower field core 14;
Described undersetting 20 is self-made components, adopts ordinary steel material, the size that concrete size is installed according to working barrel 2 and vehicle and determining;
As shown in drawings, seat shock attenuation unit involved in the present invention is installed on the bottom of seat, isolation and reduce the impact of body vibrations on vehicle driver and passenger, improves traveling comfort and the safety of vehicle ride.Absorbing vibrational energy is carried out primarily of magnetic rheology elastic body 3 and coil spring 5 in working process, play the effect of absorbing and vibration damping, wherein the rigidity of helicoidal spring 5 and damping are changeless, and the rigidity of magnetic rheology elastic body 3 and damping can carry out control and regulation in real time, after upper excitation coil 4 and lower excitation coil 1 are energized, working barrel inside forms magnetic field, can change the power of internal magnetic field by changing size of current, according to the vehicle height sensor 18 be arranged between the vehicle body of vehicle and vehicle bridge, frequency and amplitude that vehicle body and vehicle bridge relative height change can be measured, thus judge the road conditions that vehicle travels, controller 16 is passed to by signal wire (SW) 17, according to the control policy preset, upwards excitation coil 4 and lower excitation coil 1 transmit control signal, specific as follows: when vehicle height sensor 18 detects vehicle body generation low frequency, during violent oscillatory motion, controller 16 upwards excitation coil 4 and lower excitation magnetic coil 1 sends current signal and controls in real time, the magnetic field of working barrel 2 inside is strengthened, the rigidity of magnetic rheology elastic body 3 and damping increase, whole seat suspension suspension is in high rigidity, the vibration damping state of large damping, when vehicle height sensor 18 detect vehicle body generation high frequency, vibrate by a small margin time, controller 16 upwards excitation coil 4 and lower excitation magnetic coil 1 sends current signal and controls in real time, make field weakening or the disappearance of working barrel 2 inside, the rigidity of magnetic rheology elastic body 3 and deattenuation, seat shock attenuation unit is in the vibration damping state of Low rigidity, little damping.
The present invention implements special case according to imagination and is illustrated, but is not limited to above-mentioned example, every thinking according to the invention, and the technical scheme that the method adopting analog structure and material to replace obtains all belongs within protection scope of the present invention.
Claims (1)
1. a semi-active type magnetic rheology elastic body seat shock attenuation unit, is characterized in that: this device comprise lower excitation coil, working barrel, magnetic rheology elastic body, upper excitation coil, coil spring, protective case, seal ring, upper bracket, piston rod, piston, adjustment pad, hold-down nut, upper field core, lower field core, control line, controller, signal wire (SW), vehicle height sensor, every magnetic base plate, undersetting.In working barrel, be mounted with the excitation coil and the field core that load source as electromagnetic field, magnetic rheology elastic body is between upper and lower field core; Coil spring is placed between piston and upper field core, can support piston, shock attenuation unit can be assisted simultaneously to absorb and reduce vibrational energy; Vehicle height sensor is transferred to controller the vibration signal of vehicle body; Controller can change the power of working barrel built-in field by control line, and then realizes the real-time adjustment of magnetic rheology elastic body rigidity and damping, meets seat system in vehicle travel process and, to the damping requirements of multiple road conditions, improves the ride comfort of vehicle.
Described upper excitation coil and upper and lower excitation coil, by the coiling of enamel-cover copper conductor, are self-made components, and its function is as elect magnetic field current load source and regulates electromagnetic intensity;
Described upper field core and lower field core are self-made components, and select the material that alloy steel or other intensity and magneto-conductivity are all very high to make, its function is the loading source as electromagnetic field;
Described magnetic rheology elastic body is solid cylinder, for self-made components, adopt the carbonyl iron dust adding micron order diameter in silicone rubber matrix to make, magnetic rheology elastic body prepared by this mode is softer, rigidity and damping adjustability high, its function is vibration damping and the absorbing of seat;
Described working barrel is rounded cylindrical part, is self-made components, which is provided with wiring holes, selects non-magnetic aluminum alloy material to make, and its function cuts off magnetic field and provides working space for piston;
Described coil spring is commercial gauge member, and concrete specification is determined according to the size of working barrel and piston rod, and its function is the support of piston and the vibration damping of seat and absorbing;
Described protective case is self-made components, is ordinary steel Casting Parts, and its function is dust-proof and protection working barrel;
Described upper bracket is self-made components, adopts ordinary steel material to make, the size that concrete size is installed according to protective case, piston rod and vehicle and determining, and its function is connection shock attenuation unit and seat;
Described undersetting is self-made components, adopts ordinary steel material, the size that concrete size is installed according to working barrel 2 and vehicle and determine, and its function is connection shock attenuation unit and seat;
Described controller is commercial, and model is 32 STM32F205RF microprocessors, and ram in slice is 128KB, and in sheet, ROM is 512KB, can realize signal transacting and control by programming;
Described vehicle height sensor is commercial, and model is grand wound RQH-10030, is arranged between the vehicle body of vehicle and vehicle bridge, and its function is used to measure the frequency and amplitude that vehicle body and vehicle bridge relative height change;
Described is self-made components every magnetic base plate, adopts non-magnetic aluminum alloy materials to make, and concrete size is determined according to the size of working barrel and lower field core, and its function cuts off magnetic field, bottom.
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| CN201510255891.XA CN104802680B (en) | 2015-05-19 | 2015-05-19 | A kind of semi-active type magnetic rheology elastic body seat vibration absorber |
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| CN201510255891.XA CN104802680B (en) | 2015-05-19 | 2015-05-19 | A kind of semi-active type magnetic rheology elastic body seat vibration absorber |
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| CN104802680A true CN104802680A (en) | 2015-07-29 |
| CN104802680B CN104802680B (en) | 2017-09-15 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107187353A (en) * | 2017-05-11 | 2017-09-22 | 上海工程技术大学 | A kind of carsickness-proof seat |
| CN107351918A (en) * | 2017-06-19 | 2017-11-17 | 南京航空航天大学 | A kind of magnetic rheology elastic body body mount |
| RU176370U1 (en) * | 2017-05-02 | 2018-01-17 | Федеральное государственное бюджетное образовательное Учреждение высшего образования "Воронежский государственный аграрный университет имени императора Петра 1" (ФГБОУ ВО Воронежский ГАУ) | Vehicle seat suspension |
| CN108652797A (en) * | 2017-03-28 | 2018-10-16 | 上海交通大学 | Suppression system and combinations thereof of trembling device |
| RU186837U1 (en) * | 2018-02-19 | 2019-02-05 | Федеральное государственное бюджетное образовательное Учреждение высшего образования "Воронежский государственный аграрный университет имени императора Петра 1" (ФГБОУ ВО Воронежский ГАУ) | Vehicle seat suspension |
| CN109677305A (en) * | 2019-02-26 | 2019-04-26 | 合肥工业大学 | A kind of vibration and impingement mix control method of half actively controllable seat suspension |
| CN110985591A (en) * | 2019-12-17 | 2020-04-10 | 南京师范大学 | Controllable magnetorheological elastomer suspension system for power battery pack |
| CN111230847A (en) * | 2020-03-09 | 2020-06-05 | 西南交通大学 | Upper limb industrial exoskeleton capable of actively reducing vibration impact |
| RU201650U1 (en) * | 2020-02-17 | 2020-12-24 | Федеральное государственное бюджетное образовательное Учреждение высшего образования "Воронежский государственный аграрный университет имени императора Петра 1" (ФГБОУ ВО Воронежский ГАУ) | Active vehicle seat suspension |
| CN112303174A (en) * | 2020-10-30 | 2021-02-02 | 广州大学 | Semi-active control vibration isolator based on magnetorheological elastomer and control method thereof |
| RU206649U1 (en) * | 2021-03-26 | 2021-09-21 | Федеральное государственное бюджетное образовательное Учреждение высшего образования "Воронежский государственный аграрный университет имени императора Петра 1" (ФГБОУ ВО Воронежский ГАУ) | Active vehicle seat suspension |
| CN113483049A (en) * | 2021-07-13 | 2021-10-08 | 上海工程技术大学 | Rigidity-adjustable intelligent hydraulic damper and adjusting method thereof |
| CN113606275A (en) * | 2021-05-25 | 2021-11-05 | 上海应用技术大学 | Novel magnetorheological elastomer shock absorber |
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| CN108652797B (en) * | 2017-03-28 | 2023-10-31 | 上海交通大学 | Tremor suppression system and combination device thereof |
| CN108652797A (en) * | 2017-03-28 | 2018-10-16 | 上海交通大学 | Suppression system and combinations thereof of trembling device |
| RU176370U1 (en) * | 2017-05-02 | 2018-01-17 | Федеральное государственное бюджетное образовательное Учреждение высшего образования "Воронежский государственный аграрный университет имени императора Петра 1" (ФГБОУ ВО Воронежский ГАУ) | Vehicle seat suspension |
| CN107187353B (en) * | 2017-05-11 | 2019-03-01 | 上海工程技术大学 | A kind of carsickness-proof seat |
| CN107187353A (en) * | 2017-05-11 | 2017-09-22 | 上海工程技术大学 | A kind of carsickness-proof seat |
| CN107351918A (en) * | 2017-06-19 | 2017-11-17 | 南京航空航天大学 | A kind of magnetic rheology elastic body body mount |
| RU186837U1 (en) * | 2018-02-19 | 2019-02-05 | Федеральное государственное бюджетное образовательное Учреждение высшего образования "Воронежский государственный аграрный университет имени императора Петра 1" (ФГБОУ ВО Воронежский ГАУ) | Vehicle seat suspension |
| CN109677305A (en) * | 2019-02-26 | 2019-04-26 | 合肥工业大学 | A kind of vibration and impingement mix control method of half actively controllable seat suspension |
| CN110985591A (en) * | 2019-12-17 | 2020-04-10 | 南京师范大学 | Controllable magnetorheological elastomer suspension system for power battery pack |
| RU201650U1 (en) * | 2020-02-17 | 2020-12-24 | Федеральное государственное бюджетное образовательное Учреждение высшего образования "Воронежский государственный аграрный университет имени императора Петра 1" (ФГБОУ ВО Воронежский ГАУ) | Active vehicle seat suspension |
| CN111230847A (en) * | 2020-03-09 | 2020-06-05 | 西南交通大学 | Upper limb industrial exoskeleton capable of actively reducing vibration impact |
| CN111230847B (en) * | 2020-03-09 | 2023-08-04 | 西南交通大学 | Upper limb industrial exoskeleton capable of actively reducing vibration impact |
| CN112303174A (en) * | 2020-10-30 | 2021-02-02 | 广州大学 | Semi-active control vibration isolator based on magnetorheological elastomer and control method thereof |
| RU206649U1 (en) * | 2021-03-26 | 2021-09-21 | Федеральное государственное бюджетное образовательное Учреждение высшего образования "Воронежский государственный аграрный университет имени императора Петра 1" (ФГБОУ ВО Воронежский ГАУ) | Active vehicle seat suspension |
| CN113606275A (en) * | 2021-05-25 | 2021-11-05 | 上海应用技术大学 | Novel magnetorheological elastomer shock absorber |
| CN113483049A (en) * | 2021-07-13 | 2021-10-08 | 上海工程技术大学 | Rigidity-adjustable intelligent hydraulic damper and adjusting method thereof |
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| CN104802680B (en) | 2017-09-15 |
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