CN105539046A - Vehicle active inerter type dynamic vibration absorption suspension - Google Patents
Vehicle active inerter type dynamic vibration absorption suspension Download PDFInfo
- Publication number
- CN105539046A CN105539046A CN201610100492.0A CN201610100492A CN105539046A CN 105539046 A CN105539046 A CN 105539046A CN 201610100492 A CN201610100492 A CN 201610100492A CN 105539046 A CN105539046 A CN 105539046A
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- China
- Prior art keywords
- container
- suspension
- damper
- active
- fixedly connected
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/20—Type of damper
- B60G2202/25—Dynamic damper
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a vehicle active inerter type dynamic vibration absorption suspension which comprises a main spring, an active inerter, an auxiliary spring and a damper, wherein an upper fulcrum of the main spring is connected with a body; a lower fulcrum of the main spring is connected with a tire; an upper fulcrum of the active inerter is connected with the body; a lower fulcrum of the active inerter is respectively connected with upper fulcrums of the auxiliary spring and the damper; a lower fulcrum of the auxiliary spring is respectively connected with a lower fulcrum of the damper and the tire. According to the vehicle active inerter type dynamic vibration absorption suspension disclosed by the invention, a pair of body single-degree-of-freedom vibration links is formed by the body and the main spring; a resonance peak is formed near a resonance frequency; meanwhile, a set of active dynamic vibration absorber is formed by the active inerter, the auxiliary spring and the damper; when a vehicle runs, the active type dynamic vibration absorber and the body vibration links generate a tuning effect, so that a vibration amplitude near the resonance frequency is effectively cut down; an active actuator outputs an active actuating force in real time to cut down vibration energy of the tire and expand a vibration reduction frequency domain of the suspension, so that vehicle comfort can be obviously improved.
Description
Technical field
The present invention relates to a kind of vehicle suspension, particularly relate to a kind of vehicle and be initiatively used to appearance formula dynamic absorber suspension.
Background technology
For vehicle suspension, dynamic vibration absorber can be used for reducing spring and to carry or non-spring carries amplitude gain near resonance frequency, improves significantly respectively to vehicle body acceleration and tyre dynamic load lotus index.But the method needs larger added mass, more difficult realization in engineering, because which limit its application on suspension.Used container can realize the dynamic characteristic of large mass body with less quality, make light power absorbing suspension become possibility.But as two end element, used container introduces the vibrational energy from tire, cause passive used appearance formula dynamic absorber suspension vibration damping frequency range narrower, limited to the raising of travelling comfort.
Summary of the invention
The object of the invention is to solve current passive used appearance formula dynamic absorber suspension vibration damping frequency range narrower, the technical matters limited to the raising of travelling comfort.
For realizing above goal of the invention, the invention provides a kind of vehicle and being initiatively used to appearance formula dynamic absorber suspension, comprising main spring, be initiatively used to container, auxiliary spring and damper;
The upper fulcrum of described main spring is connected with vehicle body, and the lower fulcrum of described main spring is connected with tire;
The described upper fulcrum being initiatively used to container is connected with vehicle body, and the described lower fulcrum being initiatively used to container is connected with the upper fulcrum of described auxiliary spring and described damper respectively;
The lower fulcrum of described auxiliary spring is connected with the lower fulcrum of described damper and tire respectively.
Further, described container of being initiatively used to comprises used container and active actuator;
The upper fulcrum of described used container is connected with the upper fulcrum of described active actuator, and the lower fulcrum of described used container is connected with the lower fulcrum of described active actuator;
Described container of being initiatively used to is produced and the directly proportional uncontrollable force of inertia of relative acceleration being initiatively used to container two ends by described used container, produces the active controlled by motor output torque be used as power by described active actuator.
Further, described active be used as power with vehicle body acceleration or tyre accelerations inversely proportional.
Further, described container of being initiatively used to comprises motor, flywheel group, bearing, suspension upper bracket, ball screw, used shell of tank, nut assembly and slide key; Described auxiliary spring comprises auxiliary spring and lower auxiliary spring; Described damper comprises its shell, oil seal assembly, piston rod, piston assembly and permanent seat;
Described suspension upper bracket is connected with flexible chassis; The output shaft of described motor is fixedly connected with the upper end of described flywheel group and described ball screw, the shell of described motor is fixedly connected with described suspension upper bracket, described ball screw and described bearing inner ring are fixed, described outside race and described suspension upper bracket are fixed, described suspension upper bracket is coaxially fixedly connected with described used shell of tank, described used shell of tank and described its shell coaxially slide, the upper end of described main spring is connected with described suspension upper bracket, and the lower end of described main spring is connected with described its shell by spring holder;
Described nut assembly periphery is fixedly connected with described slide key, and the upper end of described nut assembly lower end and described upper auxiliary spring is fixed, and described nut assembly lower end is fixedly connected with the piston rod of described damper;
The oil seal assembly of described damper is fixedly connected with described its shell, the lower end of described upper auxiliary spring is fixedly connected with the upper end of the oil seal assembly of described damper, the upper end of described lower auxiliary spring is fixedly connected with the lower end of described oil seal assembly, described piston assembly is fixedly connected with described piston rod, the lower end of described lower auxiliary spring is fixedly connected with the upper end of described piston assembly, the permanent seat of described damper is fixedly connected with described its shell, and described permanent seat is fixedly connected with tire.
Further, described piston rod hollow, described ball screw can move in described piston rod cavity.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention is in conjunction with dynamic absorber technology and used container principle, propose vehicle and be initiatively used to appearance formula dynamic absorber suspension, vehicle body and main spring form a pair vehicle body single-degree of freedom vibration link, a formant is formed near resonance frequency, simultaneously, initiatively be used to container, auxiliary spring and damper form a set of dynamic vibration absorber, when the vehicle is running, dynamic vibration absorber and body vibrations link produce tunning effect, vibration amplitude near effective reduction resonance frequency, initiatively be used to container export in real time and be used as power with vehicle body or the inversely proportional active of tyre accelerations, cut down tire vibration energy, widen suspension vibration damping frequency domain, obviously can improve vehicle riding comfort, in addition, the calculating that active of the present invention is used as power only needs directly to use single acceleration signal, has stronger robustness and real-time.
Accompanying drawing explanation
Fig. 1 is structural principle schematic diagram of the present invention;
Fig. 2 is the structural principle schematic diagram being initiatively used to container in Fig. 1;
Fig. 3 is the control principle block diagram of suspension shown in Fig. 1;
Fig. 4 is the scheme of installation of one embodiment of the invention;
Fig. 5 is the structural representation of one embodiment of the invention.
In figure, 1-vehicle body, 2-main spring, 3-tire, 4-is initiatively used to container, 41-motor, 42-flywheel group, 43-bearing, 44-suspension upper bracket, 45-ball screw, 46-is used to shell of tank, 47-nut assembly, 48-slide key, 5-auxiliary spring, the upper auxiliary spring of 51-, auxiliary spring under 52-, 6-damper, 61-its shell, 62-oil seal assembly, 63-piston rod, 64-piston assembly, 65-permanent seat, 7-acceleration pick-up, 8-controller.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, appearance formula dynamic absorber suspension is initiatively used to by vehicle of the present invention, comprises main spring 2, is initiatively used to container 4, auxiliary spring 5, damper 6.The upper fulcrum of main spring 2 is connected with vehicle body 1, and lower fulcrum is connected with tire 3; The upper fulcrum being initiatively used to container 4 is connected with vehicle body 1, and lower fulcrum is connected with the upper fulcrum of auxiliary spring 5 and damper 6 respectively; The lower fulcrum of auxiliary spring 5 is connected with the lower fulcrum of damper 6 and tire 3 respectively.Namely auxiliary spring 5 is in parallel with damper 6, then be initiatively used to container 4 and connect, integrally in parallel with main spring 2.Vehicle body 1 and main spring 2 form a pair vehicle body single-degree of freedom vibration link, near resonance frequency, form a formant, be initiatively used to container 4, auxiliary spring 5, damper 6 form a set of dynamic vibration absorber.When the vehicle is running, dynamic vibration absorber and body vibrations link produce tunning effect, effectively cut down the vibration amplitude near resonance frequency.
As shown in Figures 2 and 3, be initiatively used to container 4 and comprise a used container (or claiming passive used container) and an active actuator, both are in parallel.Initiatively be used to total power output F of container
ab=F
a+ F
b, wherein F
bthe uncontrollable force of inertia that used container produces, F
athat the controlled active that active actuator produces is used as power.The power output of used container is proportional to two ends relative acceleration, namely
.In formula, b holds coefficient, x for used
b, x
sbe respectively the displacement of being initiatively used to container upper and lower side.Because namely used container lower end introduces vehicle body from the vibration of nonspring carried mass, cause passive used appearance formula dynamic absorber suspension vibration damping frequency range narrower, in order to reduce the impact of nonspring carried mass acceleration/accel, the active actuator in parallel with used container is made to produce and vehicle body acceleration or the inversely proportional balancing force of wheel acceleration, the impact of nonspring carried mass acceleration/accel can be reduced to a certain extent, namely
or
, total power output of being so initiatively used to container is
or
, the impact of nonspring carried mass acceleration/accel on total power output is effectively reduced.
Particularly, as illustrated in figures 4-5, suspension upper bracket 44 is connected with vehicle body 1 elasticity.Motor 41 output shaft is fixedly connected with flywheel group 42 and ball screw 45 upper end, and motor 41 shell is fixedly connected with suspension upper bracket 44.Ball screw 45 and bearing 43 inner ring are fixed, and bearing 43 outer ring and suspension upper bracket 44 are fixed, and ball screw 45 and suspension upper bracket 44 can coaxial rotation.Suspension upper bracket 44 is coaxially fixedly connected with used shell of tank 46.Used shell of tank 46 coaxially slides with its shell 61, bears the side force suffered by suspension.The upper end of main spring 2 is connected with suspension upper bracket 44, and the lower end of main spring 2 is connected with the shell 61 of damper by spring holder.
Nut assembly 47 and ball screw 45 form screw motion pair.Nut assembly 47 periphery is fixedly connected with slide key 48, and the upper end of nut assembly 47 lower end and upper auxiliary spring 51 is fixed, and nut assembly 47 lower end is fixedly connected with the piston rod 63 of damper 6.Piston rod 63 hollow, ball screw 45 can move at piston rod 63 inner chamber.
The oil seal assembly 62 of damper 6 is fixedly connected with its shell 61, and slide key 48 forms sliding pair with the keyway of its shell 61 inner chamber.The lower end of upper auxiliary spring 51 is fixedly connected with oil seal assembly 62 upper end of damper 6, and the upper end of lower auxiliary spring 52 is fixedly connected with the lower end of oil seal assembly 62.Piston assembly 64 is fixedly connected with piston rod 63, and the lower end of lower auxiliary spring 52 is fixedly connected with the upper end of piston assembly 64.The permanent seat 65 of damper 6 is fixedly connected with the shell 61 of damper 6, and permanent seat 65 is fixedly connected with tire 3.
When the vehicle is still, main spring 5 bears the gravity of vehicle body 1, makes vehicle body 1 remain on certain altitude.When the vehicle is running, its shell 62 drives main spring 2 up-and-down movement by spring holder, forms the elastic acting force be directly proportional to relative displacement between vehicle body to tire.
When the vehicle is running, from permanent seat 65 up-and-down movement of the shuttle belt fluctuation dampers which 6 of tire.The piston rod 63 of damper 6 drives piston 64 up-and-down movement, and the fluid in damper, by the damping hole on piston 64, forms the shock damping action power be directly proportional to relative velocity between piston rod 63 to shell 62.
When the vehicle is still, upper auxiliary spring 51 and lower auxiliary spring 52 produce deboost, make piston 63 rest on the midway location of damper 6.When the piston rod 63 of damper 6 is with shell 61 relative motion, the elastic force of upper auxiliary spring 51 and lower auxiliary spring 52 formation and modification between piston rod 63 and shell 61, comprehensively be presented as that auxiliary spring 5 acts on, between piston rod 63 and shell 62, namely form the elastic acting force be directly proportional to relative displacement.
Piston rod 63 drives nut assembly 47 up-and-down movement, and slide key 48 prevents nut assembly 47 from rotating around its shell 61.Nut assembly 47 drives ball screw 45 to rotate, the rotor turns of ball screw 45 flywheel driven group 42 and motor 41, the effect of inertia of flywheel group 41, on ball screw 45, produces the inertial force F be directly proportional to relative acceleration between ball screw 45 to nut assembly 47
b.
Vehicle body or tyre accelerations signal is gathered by acceleration pick-up 7, input control device 8, controller 8 calculates the target active torque value of motor, electric current is applied to motor 41, make between the rotor of motor 41 and shell and produce required active torque, active torque is applied on ball screw 45 by motor 41 output shaft, produces initiatively the be used as power F corresponding with control objectives between ball screw 45 with nut assembly 47
a.
If motor 41 applies torque
(in formula, P is the helical pitch of ball screw 45, x
sfor vehicle body displacement), then the power output of being initiatively used to container is:
(in formula, J is total rotor inertia of flywheel group 41,
), namely reach vehicle body acceleration compensation effect by controlling motor 41 Driving Torque.
If motor 41 applies torque
, then the power output of being initiatively used to container is:
, namely reach wheel acceleration compensation effect by controlling motor 41 Driving Torque.
Definition vehicle body 1 mass M
s, tire 3 mass M
u, tire 3 stiffness K
t, be initiatively used to container 4 and usedly hold coefficient b, be initiatively used to container 4 and be initiatively used as power F
a, auxiliary spring 5 rigidity k, damper 6 damping coefficient c, pavement displacement q, tire 3 displacement x
u, be initiatively used to container 4 lower fulcrum displacement x
b, vehicle body 1 displacement x
s.
Vehicle body acceleration, wheel movement of the foetus displacement, suspension are moved the mean effective value σ of stroke
acc, σ
tires, σ
traveldivided by the corresponding index of traditional suspension, obtain normalization method target, more each target is multiplied by corresponding weight coefficient, formula is optimized in definition.
In formula:
To improve vehicle body acceleration for main objective, in formula, weight coefficient is taken as α=0.5, β=0.35, γ=0.15 respectively, calculate the optimized parameter group of active and passive suspension respectively, the flexibility index vibratory response mean effective value of the 20m/s speed of a motor vehicle by B level road surface is calculated with optimized parameter group, more known: compared to uncompensated passive used appearance suspension, initiatively be used to appearance be suspended in vehicle body acceleration and suspension and move stroke aspect and have and improve largely, wheel movement of the foetus displacement aspect is then slightly not enough; Then advantage in stroke is moved at vehicle body acceleration and suspension more obvious compared to the passive suspension of tradition.
Following table is the comparing result being initiatively used to appearance formula dynamic absorber suspension and other two kinds of form suspensions of the present invention, proves that appearance formula dynamic absorber suspension of being initiatively used to of the present invention obviously can improve vehicle riding comfort.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to right.
Claims (5)
1. appearance formula dynamic absorber suspension is initiatively used to by vehicle, it is characterized in that, comprises main spring, is initiatively used to container, auxiliary spring and damper;
The upper fulcrum of described main spring is connected with vehicle body, and the lower fulcrum of described main spring is connected with tire;
The described upper fulcrum being initiatively used to container is connected with vehicle body, and the described lower fulcrum being initiatively used to container is connected with the upper fulcrum of described auxiliary spring and described damper respectively;
The lower fulcrum of described auxiliary spring is connected with the lower fulcrum of described damper and tire respectively.
2. appearance formula dynamic absorber suspension is initiatively used to by vehicle as claimed in claim 1, and it is characterized in that, described container of being initiatively used to comprises used container and active actuator;
The upper fulcrum of described used container is connected with the upper fulcrum of described active actuator, and the lower fulcrum of described used container is connected with the lower fulcrum of described active actuator;
Described container of being initiatively used to is produced and the directly proportional uncontrollable force of inertia of relative acceleration being initiatively used to container two ends by described used container, produces the active controlled by motor output torque be used as power by described active actuator.
3. appearance formula dynamic absorber suspension is initiatively used to by vehicle as claimed in claim 2, it is characterized in that, described active be used as power with vehicle body acceleration or tyre accelerations inversely proportional.
4. appearance formula dynamic absorber suspension is initiatively used to by the vehicle as described in any one of claim 1-3, it is characterized in that, described container of being initiatively used to comprises motor, flywheel group, bearing, suspension upper bracket, ball screw, used shell of tank, nut assembly and slide key; Described auxiliary spring comprises auxiliary spring and lower auxiliary spring; Described damper comprises its shell, oil seal assembly, piston rod, piston assembly and permanent seat;
Described suspension upper bracket is connected with flexible chassis; The output shaft of described motor is fixedly connected with the upper end of described flywheel group and described ball screw, the shell of described motor is fixedly connected with described suspension upper bracket, described ball screw and described bearing inner ring are fixed, described outside race and described suspension upper bracket are fixed, described suspension upper bracket is coaxially fixedly connected with described used shell of tank, described used shell of tank and described its shell coaxially slide, the upper end of described main spring is connected with described suspension upper bracket, and the lower end of described main spring is connected with described its shell by spring holder;
Described nut assembly periphery is fixedly connected with described slide key, and the upper end of described nut assembly lower end and described upper auxiliary spring is fixed, and described nut assembly lower end is fixedly connected with the piston rod of described damper;
The oil seal assembly of described damper is fixedly connected with described its shell, the lower end of described upper auxiliary spring is fixedly connected with the upper end of the oil seal assembly of described damper, the upper end of described lower auxiliary spring is fixedly connected with the lower end of described oil seal assembly, described piston assembly is fixedly connected with described piston rod, the lower end of described lower auxiliary spring is fixedly connected with the upper end of described piston assembly, the permanent seat of described damper is fixedly connected with described its shell, and described permanent seat is fixedly connected with tire.
5. appearance formula dynamic absorber suspension is initiatively used to by vehicle as claimed in claim 4, and it is characterized in that, described piston rod hollow, described ball screw can move in described piston rod cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610100492.0A CN105539046B (en) | 2016-02-24 | 2016-02-24 | Vehicle is actively used to appearance formula dynamic absorber suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610100492.0A CN105539046B (en) | 2016-02-24 | 2016-02-24 | Vehicle is actively used to appearance formula dynamic absorber suspension |
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| Publication Number | Publication Date |
|---|---|
| CN105539046A true CN105539046A (en) | 2016-05-04 |
| CN105539046B CN105539046B (en) | 2017-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610100492.0A Active CN105539046B (en) | 2016-02-24 | 2016-02-24 | Vehicle is actively used to appearance formula dynamic absorber suspension |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105966474A (en) * | 2016-05-19 | 2016-09-28 | 大连理工大学 | Active vibration damping supporting system for mining dump truck bed and design method thereof |
| CN109080401A (en) * | 2018-07-06 | 2018-12-25 | 江苏大学 | A kind of hub motor shock absorption system and its working method |
| CN111016566A (en) * | 2019-12-05 | 2020-04-17 | 江苏大学 | Inertial capacity and damping double-ceiling suspension system and control method thereof |
| CN111923679A (en) * | 2020-07-27 | 2020-11-13 | 江苏大学 | Stability switching theory-based PID time-lag switching compensation control method for vehicle ISD semi-active suspension |
| CN112413034A (en) * | 2019-08-23 | 2021-02-26 | 上海汽车集团股份有限公司 | Vehicle and vibration damping assembly |
| CN112855824A (en) * | 2021-03-11 | 2021-05-28 | 中国北方车辆研究所 | Inertial volume type vibration isolation device aiming at simple harmonic displacement excitation and design method |
| CN114321249A (en) * | 2022-01-14 | 2022-04-12 | 华南农业大学 | Three-dimensional spiral unit with inertial volume effect, mechanical metamaterial and application of three-dimensional spiral unit |
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| US4236606A (en) * | 1977-12-13 | 1980-12-02 | Katsuaki Sunakoda | Friction braking type vibration damper |
| CN103303085A (en) * | 2013-06-14 | 2013-09-18 | 江苏大学 | Vehicle passive suspension structure employing inertial container |
| CN105003591A (en) * | 2015-05-29 | 2015-10-28 | 石家庄铁道大学 | Inerter capable of adjusting inertance coefficient |
| CN205553849U (en) * | 2016-02-24 | 2016-09-07 | 浙江大学台州研究院 | Formula dynamic vibration absorber suspension is used to hold in vehicle initiative |
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| US4236606A (en) * | 1977-12-13 | 1980-12-02 | Katsuaki Sunakoda | Friction braking type vibration damper |
| US4126302A (en) * | 1978-01-20 | 1978-11-21 | Curnutt Charles R | Horizontal inertia-responsive shock absorber |
| CN103303085A (en) * | 2013-06-14 | 2013-09-18 | 江苏大学 | Vehicle passive suspension structure employing inertial container |
| CN105003591A (en) * | 2015-05-29 | 2015-10-28 | 石家庄铁道大学 | Inerter capable of adjusting inertance coefficient |
| CN205553849U (en) * | 2016-02-24 | 2016-09-07 | 浙江大学台州研究院 | Formula dynamic vibration absorber suspension is used to hold in vehicle initiative |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105966474A (en) * | 2016-05-19 | 2016-09-28 | 大连理工大学 | Active vibration damping supporting system for mining dump truck bed and design method thereof |
| CN105966474B (en) * | 2016-05-19 | 2018-09-04 | 大连理工大学 | A kind of quarry tipper railway carriage active damping support system and its design method |
| CN109080401A (en) * | 2018-07-06 | 2018-12-25 | 江苏大学 | A kind of hub motor shock absorption system and its working method |
| CN112413034A (en) * | 2019-08-23 | 2021-02-26 | 上海汽车集团股份有限公司 | Vehicle and vibration damping assembly |
| CN112413034B (en) * | 2019-08-23 | 2022-06-14 | 上海汽车集团股份有限公司 | Vehicle and vibration damping assembly |
| CN111016566A (en) * | 2019-12-05 | 2020-04-17 | 江苏大学 | Inertial capacity and damping double-ceiling suspension system and control method thereof |
| CN111923679A (en) * | 2020-07-27 | 2020-11-13 | 江苏大学 | Stability switching theory-based PID time-lag switching compensation control method for vehicle ISD semi-active suspension |
| CN111923679B (en) * | 2020-07-27 | 2022-03-18 | 江苏大学 | Stability switching theory-based PID time-lag switching compensation control method for vehicle ISD semi-active suspension |
| CN112855824A (en) * | 2021-03-11 | 2021-05-28 | 中国北方车辆研究所 | Inertial volume type vibration isolation device aiming at simple harmonic displacement excitation and design method |
| CN114321249A (en) * | 2022-01-14 | 2022-04-12 | 华南农业大学 | Three-dimensional spiral unit with inertial volume effect, mechanical metamaterial and application of three-dimensional spiral unit |
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| CN105539046B (en) | 2017-09-22 |
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Effective date of registration: 20191112 Address after: 317200 No.28, Qinghua Road, Xiage village, Sanhe Town, Tiantai County, Taizhou City, Zhejiang Province Patentee after: Zhou Ting Address before: Truman town Yuhuan County Taizhou city Zhejiang province 317605 Hu Xing Industrial Park (Wu Jiaduan) Chu Chau talent dream factory Patentee before: Research Institute of Zhejiang University-Taizhou |
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Effective date of registration: 20200119 Address after: 317605 Chuzhou talent dream factory, Huxing Industrial Park, Chumen Town, Yuhuan City, Taizhou City, Zhejiang Province Patentee after: Research Institute of Zhejiang University-Taizhou Address before: 317200 No.28, Qinghua Road, Xiage village, Sanhe Town, Tiantai County, Taizhou City, Zhejiang Province Patentee before: Zhou Ting |