CN2745781Y - Piezoelectric device for generating by automobile vibration energy - Google Patents
Piezoelectric device for generating by automobile vibration energy Download PDFInfo
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- CN2745781Y CN2745781Y CN 200420086151 CN200420086151U CN2745781Y CN 2745781 Y CN2745781 Y CN 2745781Y CN 200420086151 CN200420086151 CN 200420086151 CN 200420086151 U CN200420086151 U CN 200420086151U CN 2745781 Y CN2745781 Y CN 2745781Y
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Abstract
The utility model discloses a piezoelectric device for generating by automobile vibration energy which is arranged in the automobile hanging system, generating energy by vibration, and the energy generated is stored and utilized. The utility model comprises at least one piezoelectric device arranged in the automobile hanging system, a power changer and at least one energy-storing device or final power utilization load; the piezoelectric device is used to convert the vibration energy into the electric energy, the power changer is used to adjust and convert the electric energy generated by the piezoelectric device and make the electric energy used for the energy-storing device or the final power utilization load. Wherein, the piezoelectric device is connected with the power changer, and the power changer is respectively connected with the energy-storing device or the final power utilization load. The utility model provides a new source of energy for the vehicles, in particular to the electric automobile and the hybrid electric automobile, and the electric energy acquired can be directly used as the dynamic power, which increases the continuous driving mileage effectively. Besides, an appropriate control strategy is adopted, the utility model has the function of semiactive vibration-resistance.
Description
Technical field
The utility model relates to the device of automobile mounted generating, particularly a kind of automobile vibrational energy piezo-electric generating device.
Background technology
The principle of work of piezoelectric power supplies is based on direct piezoelectric effect, and piezoelectric is their core work material.
Late 1960s, the accurate medical apparatus plant cooperative study in Shanghai Inst. of Silicate, Chinese Academy of Sciences and Shanghai piezoelectricity hand-held design X-ray equipment power supply successfully obtains U
Max=60kV, I
MaxThe high direct voltage of=3mA.
The U.S. Pat .No.4504761 of Charles G.Triplett application, exercise question is " being installed in the piezo-electric generator on the vehicle ", disclose the piezo-electric generator that is configured on the vehicle tyre, this device utilizes the pressure that is applied on the tire during the wheel to produce electric energy.
The Chinese invention patent CN 1202014A of Kim Dong Kuk's application, exercise question is " piezo-electric generator and a manufacture method thereof with piezoelectric element of linking soruce of vibration ", has announced a kind of piezo-electric generator that utilizes the vehicle motor mechanical vibrational energy to produce electricity.This invention comprises the circuit of the electric energy that piezoelectric element and storage piezoelectric element produce.Each piezoelectric element has the holding components of piezoelectric membrane and piezoelectric membrane.Excess pressure is applied to holding components, so that the piezoelectric element K/UP.The DC/AC conv is set, and the direct current (DC) that piezoelectric element is produced converts alternating current to, and voltage transformer and diode are set, and prevents from battery discharging.
Above example shows that it is feasible that the direct piezoelectric effect of utilizing piezoelectric is made various types of power supplys, and it is specially adapted to the power supply of various mobile devices.The internal impedance of this power supply is a capacitive, by the conversion of piezoeffect, even work, also can change K under static and quasistatic condition
2.W
MachineElectric energy (K is an electromechanical coupling factor, K
2Be the ability of weighing energy converting between mechanical).There is the piezoelectric of multiple K 〉=0.7 to succeed in developing and finished industrialization at present, selects wherein piezoelectric coefficient d
33, g
33Height, the mechanical strength height, pressurization back stable performance repeatedly, the material that specific inductance capacity is bigger can be used as comparatively ideal generating operation material.
Traditional suspension of automobile is a passive suspension system, has all adopted two kinds of primary elements of spring and shock absorber.Re-use the traditional suspension of deciding rigid spring and deciding damping shock absorber and can not satisfy in order to pursue good travelling comfort and good road-holding property, the automobile suspension system of multiple employing Eltec is developed.Active suspension technology wherein is owing to the application force that has adopted between air pressure or oil pressure control vehicle body and the vehicle bridge, thereby superior performance, but needs energy consumption greatly.The semi-active suspension technology of Ti Chuing is afterwards formed suspension with adjustable spring or adjustable shock absorber, and according to the feedback signals such as speed responsive of spring carried mass, according to certain control law, regulates the rigidity of adjustable spring or the dumping force of adjustable shock absorber.Compare with active suspension, the energy that the semi-active suspension control system consumes is very little, and cost is lower, uses widely commercial having obtained.The semi-active suspension technology mainly adopts hydraulic pressure or electromagnetic mode to realize.
Toyota Motor company has developed a kind of piezoelectric electronic control suspension (TEMS) for auto use, and this is a kind of semi-active suspension system that can change hydraulic damping power.In the shock absorber of this system, having installed is the road surface sensor and the piezoelectric actuator of material with the piezoceramic.Volt circuit face sensor in this system is converted into electric signal with the caused vibration signal of Uneven road and is sent to microprocessor, microprocessor is handled this signal, produce dilatation according to control policy control switching drive pressure motor-driven cylinder, the spool that piezoelectric actuator further drives the shock absorber switch valve produces displacement, change the dumping force of shock absorber, thereby realize half active damping controls of suspension system.
Because piezoelectric promptly is dielectric substance, be again elastic body, just have, inverse piezoelectric effect and general elastomeric properties, thereby electricity and mechanical property are being arranged simultaneously, its electric behavior and mechanical behavior intercouple.Utilize this electromechanical coupling characteristics of piezoelectric, the circuit that piezoelectric element and the electric elements that comprise resistance unit, capacity cell, inductance element and binistor etc. are formed is in parallel, can form complete piezo-electric damping system.By different circuit forms selected and the piezoelectric element parallel connection, the array configuration and the parameter size of different electric elements, can design different controlled piezo-electric damping forms, it is passive, half initiatively and the inhibition and the control of active-passive hybridization that the vibration of structural system is carried out.
As with piezoelectric element and the resistance piezo-electric damping system that forms in parallel, be to realize to the vibration damping of structure by the joule heat dissipation energy, be called as piezoelectricity viscous damping technology.
And for example, can change the effective rigidity of piezoelectric element, utilize this principle, can develop piezo-electric damping vibration insulating system with mechanical power bump leveller character with piezoelectric element and the electric capacity piezo-electric damping system that forms in parallel.
And for example, disconnect and closed conversion, can realize the bigger change of equivalent stiffness by on-off element with piezoelectric element and the on-off element conversion hysteria that forms in parallel half active piezo-electric damping system, thus the flow direction of control vibrational energy in structural system.
The piezo-electric damping damping technology is applied in some sports articles for use.For example, the designer of U.S. K2 company embeds piezoelectric in the sled, and when sled deformed because of vibration, piezoelectric also deformed thereupon, and energy of vibration is converted into electric energy; And use resistance and the piezoelectric piezo-electric damping system that forms in parallel, the form of these energy with joule heat dissipated.
Summary of the invention
The purpose of this utility model is, proposes a kind of automobile vibrational energy piezo-electric generating device, and piezo-electric device is placed automobile suspension system, utilizes vibrational energy to produce electric energy, and is stored and utilize as a kind of electric power supply.The automobile vibrational energy piezo-electric generating device that the utility model proposes is a kind of novel power generation device of collecting dissipation energy, for automobile provides new energy source.This is particularly important for electronlmobil and hybrid vehicle, can effectively improve continual mileage, has remarkable economical and is worth and social value.
In addition, the utility model adopts suitable control method in utilizing the process of vibrating energy piezoelectric power generating, can make this device play the effect of half active damping.
For achieving the above object, the utility model adopts following technical measures:
The automobile vibrational energy piezo-electric generating device is characterized in that, this device comprises:
At least one places the piezo-electric device of automobile suspension system, and this piezo-electric device is connected with the spring of automobile suspension system, is used for vibrational energy is converted to electric energy;
A power-converting device is made up of power model and control module, and power model is used to adjust and change the electric energy that piezo-electric device produces, and electric energy is used for closed-center system or finally uses electric load; Control module is controlled by the power component to power model, makes vibrational energy change into electric energy, and for closed-center system storage or finally utilize with electric load;
A closed-center system or finally use electric load is used for storage and utilizes the adjusted electric energy of power-converting device;
Above-mentioned piezo-electric device is connected with power-converting device, and power-converting device is respectively with closed-center system or finally link to each other with electric load.
Other characteristics of the present utility model are that described piezo-electric device comprises lower piston rod, upper piston, hydraulic actuating cylinder and piezoelectric element; One end and the upper piston of lower piston rod place hydraulic actuating cylinder, therebetween full of liquid; The damper spring of lower piston rod and suspension links to each other, and damper spring passes to lower piston rod to the power that is formed by the vibration of car substrate amount, passes to upper piston by liquid pressure, is placing piezoelectric element on the upper piston and between car body;
The piezoelectric pile that described piezoelectric element adopts the multi-layer piezoelectric thin slice to be together in parallel.
Described piezoelectric element is piezoceramic or ferroelectricity piezoelectric or piezo-electricity composite material.
The power model of described power-converting device comprises full-bridge rectification device and DC/DC changer, and electric energy output end of full-bridge rectification device and piezoelectric element links to each other, and is used for converting the alternating current that piezoelectric element produces to direct current (DC); The DC/DC changer is connected with the full-bridge rectification device, is used to adjust the voltage and current of full-bridge rectification device output; Device for power switching is used for carrying out the instruction that control signal is passed in the DC/DC changer.
The control module of described power-converting device comprises: sensor, filter circuit, controller and photoelectric isolating circuit; Sensor places on the power model of piezo-electric device, power-converting device, is used to obtain the required signal of microprocessor; Controller links to each other with sensor by filter circuit, obtains the signal that sensor obtains, and the output control signal; Control signal is delivered to the control end of the device for power switching of power model through photoelectric isolating circuit.
The utility model compared with prior art has following advantage:
1) for vehicle provides new energy source, the Vehicular vibration energy that in the past was not used is used, especially have remarkable meaning for electronlmobil and hybrid vehicle increase continual mileage;
2) because piezo-electric generating is a kind of medium generation mode, and adopt common electrical generator mode to generate electricity to compare, have simple in structurely, response is fast, is particularly suitable for alternation power driven mode.
3), be convenient to install and existing suspension is transformed because piezoelectric has very high energy density, so the piezo-electric device volume is little, in light weight;
4) this device is widely used, and can be used for automobile, electronlmobil, hybrid vehicle and multiple special vehicle and military-designed vehicle.
5) in utilizing the process of vibrating energy piezoelectric power generating, adopt suitable control method, can make this device play the effect of half active damping simultaneously in generating.Different with the piezoelectric type TEMS system of in technical background, introducing, the utility model is not to realize vibration control by the hydraulic damping power that changes shock absorber, but, regulate its piezo-electric damping and realize the control of half active vibration by changing the used load of piezoelectric element.
Description of drawings
Fig. 1 is an apparatus structure scheme drawing of the present utility model;
Fig. 2 is the schematic diagram of piezo-electric device among first embodiment;
Fig. 3 is the schematic circuit diagram of power model in the power-converting device among first embodiment;
Fig. 4 is the control principle figure of power-converting device among first embodiment.
Fig. 5 is the schematic circuit diagram of power model in the power-converting device among second embodiment;
Embodiment below in conjunction with accompanying drawing and contriver provide is described in further detail the utility model.
The specific embodiment
Referring to Fig. 1～4, according to the technical solution of the utility model, the technology path of first embodiment is: insert at least one piezo-electric device between the spring of vehicle suspension system and car body, this device is connected with spring; Fig. 2 has provided the structure of piezo-electric device among first embodiment.Voltage and an energy storage formula according to the generation of the piezoelectric under the action of compressive stress:
U＝Q/C (1)
The ability that can see a pressurized energy storage is square being directly proportional with the voltage behind the piezoelectric pressurized.The formula that piezoelectric produces voltage is:
G wherein
33Be piezoelectricity longitudinal voliage constant, l, W and t are respectively the length and width and the thickness of piezoelectric.From formula (3) as can be known, piezoelectric is directly proportional with its suffered power F by the voltage of stress generation.In order to improve the piezoelectricity transfer capability, adopt piezo-electric device as shown in Figure 2 to improve the suffered compression effort of piezoelectric.
This piezo-electric device is made up of lower piston rod 4, upper piston 2, hydraulic cylinder body 3 and piezoelectric pile 1.One end and the upper piston 2 of lower piston rod 4 place hydraulic cylinder body 3, are full of hydraulic oil therebetween.Hydraulic cylinder body 3 is captiveed joint with vehicle body respectively with piezoelectric pile 1.Hydraulic actuating cylinder spring 5 passes to lower piston rod 4 to the power that is formed by the unsprung weight vibration.Lower piston rod 4 moves in hydraulic cylinder body 3 and produces pressure change, by fluid pressure change has been passed to upper piston 2, and upper piston 2 directly pushes piezoelectric pile 1, produces a new strain on piezoelectric pile 1.Because the payload space of lower piston is much smaller than the payload space of upper piston, the variation of piezoelectric pile institute compression chord is amplified by a certain percentage with respect to the STRESS VARIATION of piston rod.According to the direct piezoelectric effect principle, piezoelectric material surface can produce electric charge, thereby forms the electromotive force in the formula (1).By formula (3), this voltage is directly proportional with the thickness t of piezoelectric.In order to reduce this voltage, the piezoelectric pile that adopts the multi-layer piezoelectric thin slice to be together in parallel and to make.This design can guarantee both can provide the operation material of enough volumes, and the voltage that piezoelectric is produced is unlikely to too high, is convenient to power-converting device electric energy is changed and reclaimed.Piezoelectric pile adopts piezoelectric ceramic PZT, according to the difference of selected materials model, and its electromechanical coupling factor K
33Be 0.7～0.92, have higher electromechanical conversion efficiency.
Power-converting device may further comprise the steps the adjustment and the conversion of electric energy:
Switching process, the alternating current that piezoelectric is produced becomes direct current (DC);
The DC/DC conversion process, the direct current (DC) that switching process is produced carries out the voltage and current conversion.
The transformation process when overtension that piezoelectric produces, is carried out step-down earlier and is handled before switching process, reduce the voltage to the tolerant voltage range of rectifier cell.
Power-converting device comprises power model and control module.
Fig. 3 has provided the schematic circuit diagram of the power model of power-converting device among first embodiment.This circuit is made up of rectifier and DC/DC changer two large divisions.The input end of rectifier links to each other with the electric energy output end of piezoelectric element.Rectifier adopts full bridge rectifier, by 4 diode D
1, D
2, D
3And D
4Constitute.The input end of rectifier links to each other with the electric energy output end of piezoelectric element.The input end of DC/DC changer is connected with full-bridge rectification device mouth.The DC/DC changer is by inductance L
1, capacitor C, device for power switching K
1And sustained diode
5Form, realize pressing the reduction voltage circuit of chopping way work.The input end of DC/DC changer is connected with full-bridge rectification device mouth.Device for power switching K
1Adopt IGBT IPM Intelligent Power Module, module contains essential driving of IGBT and protective circuit.
Fig. 4 has provided the control principle figure of power-converting device among first embodiment, and control module is made up of current sensor, voltage sensor, filter circuit, microprocessor and photoelectric isolating circuit.Microprocessor adopts TI Company DSP chip TMS320LF2407.Voltage sensor adopts the current mode voltage sensor, and current sensor adopts the current mode current sensor.The current/voltage sensor is used for gathering the voltage and current signal of DC/DC converter output terminal, handles through filter circuit, and the A/D port of delivering to DSP carries out data acquisition, and collection result is after DSP handles, with the form output control signal of PWM.Pwm signal is delivered to the control end of Intelligent Power Module IPM via photoelectric isolating circuit, to power tube K
1On off state control.Acquisition of signal and control frequency are 1～2kHz; The PWM modulation frequency range is 10kHz～20kHz.The filter circuit that filter adopts representative type to be built by op amp, photoelectric isolating circuit is realized by photoelectrical coupler.The required various level of control module are provided through common DC/DC Switching Power Supply by Vehicular accumulator cell.
In first embodiment, power-converting device charges to closed-center system, and closed-center system is a lead-acid storage battery.
Concrete principle of work of the present utility model is:
In the car running process, since the effect of vibration, the stress that piezo-electric device is constantly changed.The amplification of hydraulic actuating cylinder in piezo-electric device, several tons stress are loaded on the piezoelectric element in the piezo-electric device, have produced electric charge and voltage at the two poles of the earth of piezoelectric element, and according to design, the open circuit maximum voltage is limited at below the 500V.When the absolute value of voltage was higher than the cond C voltage on rectifier right side, piezoelectric element charged to capacitor C; Otherwise piezoelectric element is open circuit.In power-converting device, control module is carried out the adjusting to the pwm signal dutycycle by the sampled value to sensor signal.When the dutycycle increase, the power tube ON time increases, and promptly charging duration increases, the end points drops of capacitor C, and piezoelectric element reduces to the electrically-charged conducting-state voltage of capacitor C; When dutycycle reduces, the power tube ON time reduces, and promptly charging duration reduces, and the end points of capacitor C presses liter, and piezoelectric element raises to the electrically-charged conducting-state voltage of capacitor C.By the PI control algorithm, can allow the charging valtage at battery two ends maintain a certain setting value, and this setting value can be set by test or adaptive algorithm.The principle of setting this value is to make more vibrational energy be converted into electric energy.Inductance L
1And D
5Can be at power tube K
1During disconnection and storage battery constitute continuous current circuit, continue to battery charge.By the detection that sensor carries out battery charge voltage and charging current, when storage battery was full of, controller stopped storage battery being charged.
Provide second embodiment below, in order to illustrate that this device when realizing the vibrational energy generating, also carries out half ACTIVE CONTROL to the vibration of car body.Second embodiment is that the difference with first embodiment is, the power model of power-converting device adopts schematic diagram shown in Figure 5, and in piezo-electric device the piezoelectric transducer of installation and measuring body movement speed on the hydraulic cylinder body 3 of contiguous piezoelectric pile 1, adopt the parallel control policy of piezo-electric generating and half active damping simultaneously.
Fig. 5 has provided the schematic circuit diagram of power-converting device among second embodiment.The difference of it and Fig. 3 has been to increase an IGBT IPM Intelligent Power Module K who is subjected to dsp chip control
2, it is placed between the positive pole of the positive output end of full bridge rectifier and capacitor C.
The principle of work of following analysis circuit.The control system of circuit is judged the kinematic velocity of vehicle body according to speed sensor signal.When speed for upwards the time, controller provides control signal, makes power device K
1Disconnect K
2Conducting, and when the absolute value of voltage of piezoelectric element generation also is higher than the voltage at capacitor C two ends, the rectifier conducting, the equivalent stiffness of piezoelectric element reduces, and slows down the upward movement of vehicle body, and piezoelectric element charges to capacitor C; When speed when being downward, controller provides control signal, makes power device K
2Disconnect, the equivalent stiffness of piezoelectric element increases, and suppresses moving downward of vehicle body, and the deformation energy of piezoelectric element is by mechanical stiffness and piezoelectric capacitance storage, K simultaneously
1By the control of PWM ripple, by certain dutycycle, capacitor C is charged to storage battery.By to K
1The adjusting of dutycycle can make storage battery obtain rational charging valtage and charging duration.From top argumentation as can be seen, capacitor C process of charging and battery charging process hocket in time, and the capacitor C process of charging is corresponding to car body upward movement process, and battery charging process moves downward process corresponding to car body.Simultaneously, because the voltage that piezoelectric element produces is far above the voltage of storage battery, so the dead band of total system is very little, assurance device has higher generating and damping efficiency.
Though discussed and be used for the automobile vibrational energy piezo-electric generating device with reference to above two embodiment, but should understand, the configuration of the structure detail of automobile vibrational energy piezo-electric generating device and each parts and element is not limited to situation described in the embodiment, thereby under the principle that does not deviate from know-why of the present utility model, can make various changes and distortion.
Can adopt piezoceramic or ferroelectricity piezoelectric or piezo-electricity composite material as piezoelectric element.
Can use disclosed various mechanisms as piezo-electric device, comprise mechanical type, fluid pressure type, pneumatic type, micro electromechanical mechanism and their various combinations, improve the ability that wherein vibrational energy is converted to electric energy as the piezoelectric element of core work material.
Power model as power-converting device comprises rectifying device, DC/DC changer and relevant interface circuit and necessary potential device.
Power device as power-converting device adopts various widely used devices, includes but not limited to power transistor GTR, Metal-oxide-semicondutor type field effect transistor M OSFET, insulated gate bipolar transistor IGBT and gate turn off thyristor GTO.
Adopt analog controller, digitial controller and analog digital mixture control as controller, analog controller comprises the controller that analog controller that discrete component constitutes or programmable analog device constitute, and digitial controller comprises wherein a kind of of microprocessor, micro controller system, DSP, CPLD and FPGA;
Adopt voltage sensor or current sensor or mechanical pick-up device as sensor.
As closed-center system is various storage batterys, super capacitor and flywheel.
As final be resistive loading or inductive load or capacitive load or their combination with electric load.
Though showed and described the piezoelectric type vibrational energy converting means of present embodiment, wherein, piezo-electric device is connected with the spring of automobile suspension system, be used for vibrational energy is converted to electric energy, but should understand, utilize piezoeffect to realize the recovery of energy, the installation of piezo-electric device can be not limited to connect with spring.Piezo-electric device also can be installed on other position of suspension, and is connected with suspension or its parts in the serial or parallel connection mode.
Though above to have described the utility model with reference to certain embodiments and example of the present utility model, the utility model is not limited to embodiment described above.According to know-why of the present utility model, those of ordinary skills make amendment to the foregoing description and are out of shape according to above-mentioned know-why and all belong to protection domain of the present utility model.
Claims (6)
1. the vibrating energy piezoelectric power generating device of an automobile is characterized in that, this device comprises:
At least one places the piezo-electric device of automobile suspension system, and this piezo-electric device is connected with the spring of automobile suspension system, is used for vibrational energy is converted to electric energy;
A power-converting device is made up of power model and control module, and power model is used to adjust and change the electric energy that piezo-electric device produces, and electric energy is used for closed-center system or finally uses electric load; Control module is controlled by the power component to power model, makes vibrational energy change into electric energy, and for closed-center system storage or finally utilize with electric load;
At least one closed-center system or finally use electric load is used for storage and utilizes the adjusted electric energy of power-converting device;
Above-mentioned piezo-electric device is connected with power-converting device, and power-converting device is respectively with closed-center system or finally link to each other with electric load.
2. automobile vibrational energy piezo-electric generating device as claimed in claim 1 is characterized in that: described piezo-electric device comprises lower piston rod, upper piston, hydraulic actuating cylinder and piezoelectric element; One end of lower piston rod and upper piston place hydraulic actuating cylinder and full of liquid betwixt; The damper spring of lower piston rod and suspension links to each other, and damper spring passes to lower piston rod to the power that is formed by the vibration of car substrate amount, passes to upper piston by liquid pressure, is placing piezoelectric element on the upper piston and between car body.
3. automobile vibrational energy piezo-electric generating device as claimed in claim 2 is characterized in that: the piezoelectric pile that described piezoelectric element adopts the multi-layer piezoelectric thin slice to be together in parallel.
4. as claim 2 or 3 described automobile vibrational energy piezo-electric generating devices,, it is characterized in that: the piezoelectric element in the described piezo-electric device is piezoceramic or ferroelectricity piezoelectric or piezo-electricity composite material.
5. automobile vibrational energy piezo-electric generating device as claimed in claim 1, it is characterized in that, the power model of described power-converting device comprises full-bridge rectification device and DC/DC changer, electric energy output end of full-bridge rectification device and piezoelectric element links to each other, and is used for converting the alternating current that piezoelectric element produces to direct current (DC); The DC/DC changer is connected with the full-bridge rectification device, is used to adjust the voltage and current of arteries and veins full-bridge rectification device output; Device for power switching is used for carrying out the instruction that control signal is passed in the DC/DC changer.
6. automobile vibrational energy piezo-electric generating device as claimed in claim 1 is characterized in that, the control module of described power-converting device comprises: sensor, filter circuit, controller and photoelectric isolating circuit; Sensor places on the power model of piezo-electric device and power-converting device, is used to obtain the required signal of controller; Controller links to each other with sensor by filter circuit, obtains the signal that sensor obtains, and the output control signal; Control signal is delivered to the control end of the device for power switching of power model through photoelectric isolating circuit.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292930C (en) * | 2004-11-08 | 2007-01-03 | 西安交通大学 | Automobile vibrational energy piezo-electric generating method and system |
| CN101741278A (en) * | 2010-03-24 | 2010-06-16 | 上海交通大学 | Dynamic vibration absorber-based device for collecting piezoelectric vibration energy |
| CN102808894A (en) * | 2011-05-30 | 2012-12-05 | 株式会社丰田自动织机 | Anti-vibration device for loom |
| CN103448547A (en) * | 2013-09-17 | 2013-12-18 | 东风汽车公司 | Suspension movement energy recovery mechanism |
| CN103921641A (en) * | 2014-04-29 | 2014-07-16 | 江苏大学 | Energy feedback suspension system and control method |
| CN104318730A (en) * | 2014-10-23 | 2015-01-28 | 北京工业大学 | Multi-touch piezoelectric warning circuit |
| CN104868525A (en) * | 2015-04-16 | 2015-08-26 | 江苏大学 | Energy feedback suspension system linear motor supercapacitor mode switching method |
| CN105857050A (en) * | 2016-06-06 | 2016-08-17 | 谢天琦 | Piezoelectric-resonant hybrid power-generating engine supporting device |
| CN106787592A (en) * | 2016-12-30 | 2017-05-31 | 深圳市无电通科技有限公司 | Impulse generator electric energy synthesizer and its method |
| CN108773252A (en) * | 2018-07-20 | 2018-11-09 | 常州市知豆信息科技有限公司 | A kind of intelligent adaptive automobile suspension system |
| CN108828361A (en) * | 2018-06-27 | 2018-11-16 | 哈尔滨工业大学 | A kind of piezoelectric energy harvesters test device based on dynamic vibration absorber |
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2004
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292930C (en) * | 2004-11-08 | 2007-01-03 | 西安交通大学 | Automobile vibrational energy piezo-electric generating method and system |
| CN101741278A (en) * | 2010-03-24 | 2010-06-16 | 上海交通大学 | Dynamic vibration absorber-based device for collecting piezoelectric vibration energy |
| CN101741278B (en) * | 2010-03-24 | 2012-09-05 | 上海交通大学 | Dynamic vibration absorber-based device for collecting piezoelectric vibration energy |
| CN102808894A (en) * | 2011-05-30 | 2012-12-05 | 株式会社丰田自动织机 | Anti-vibration device for loom |
| CN102808894B (en) * | 2011-05-30 | 2014-06-25 | 株式会社丰田自动织机 | Anti-vibration device for loom |
| CN103448547A (en) * | 2013-09-17 | 2013-12-18 | 东风汽车公司 | Suspension movement energy recovery mechanism |
| CN103448547B (en) * | 2013-09-17 | 2016-04-13 | 东风汽车公司 | A kind of suspension movement energy recovery mechanism |
| CN103921641B (en) * | 2014-04-29 | 2016-03-02 | 江苏大学 | A kind of energy regenerative suspension system and control method |
| CN103921641A (en) * | 2014-04-29 | 2014-07-16 | 江苏大学 | Energy feedback suspension system and control method |
| CN104318730B (en) * | 2014-10-23 | 2017-01-25 | 北京工业大学 | Multi-touch piezoelectric warning circuit |
| CN104318730A (en) * | 2014-10-23 | 2015-01-28 | 北京工业大学 | Multi-touch piezoelectric warning circuit |
| CN104868525A (en) * | 2015-04-16 | 2015-08-26 | 江苏大学 | Energy feedback suspension system linear motor supercapacitor mode switching method |
| CN104868525B (en) * | 2015-04-16 | 2017-05-03 | 江苏大学 | Energy feedback suspension system linear motor supercapacitor mode switching method |
| CN105857050A (en) * | 2016-06-06 | 2016-08-17 | 谢天琦 | Piezoelectric-resonant hybrid power-generating engine supporting device |
| CN106787592A (en) * | 2016-12-30 | 2017-05-31 | 深圳市无电通科技有限公司 | Impulse generator electric energy synthesizer and its method |
| CN108828361A (en) * | 2018-06-27 | 2018-11-16 | 哈尔滨工业大学 | A kind of piezoelectric energy harvesters test device based on dynamic vibration absorber |
| CN108828361B (en) * | 2018-06-27 | 2020-07-07 | 哈尔滨工业大学 | Piezoelectric energy collector testing device based on dynamic vibration absorber |
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