CN202690866U - Novel current controller of magnetorheological damper - Google Patents
Novel current controller of magnetorheological damper Download PDFInfo
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- CN202690866U CN202690866U CN2012203600140U CN201220360014U CN202690866U CN 202690866 U CN202690866 U CN 202690866U CN 2012203600140 U CN2012203600140 U CN 2012203600140U CN 201220360014 U CN201220360014 U CN 201220360014U CN 202690866 U CN202690866 U CN 202690866U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a novel current controller of a magnetorheological damper. The novel current controller of the existing magnetorheological damper is slow in current response time, cannot provide constant lasting current in the time of achieving an unstable state and is low in accuracy of output current, large in standby power consumption and low in efficiency. The product comprises a housing (1); a chip (2) is arranged inside the housing; the model number of the chip is MSP430; the chip MSP430 is connected with a pulse control chip (3); the model number of the pulse control chip (3) is SG3525; a circuit of the pulse control chip SG3525 is connected with a PWM (Pulse-Width Modulation) drive chip (4); the model number of the PWM drive chip (4) is EXB841; the PWM drive chip EXB841 is connected with a BUCK master circuit IGBT (Insulated Gate Bipolar Transistor) (5); the BUCK master circuit IGBT is connected with a current transformer (6); the model number of the current transformer (6) is ACS712; the current transformer ACS712 is connected with an operational amplifier (7) of an amplifying circuit; the model number of the operational amplifier is LM324; the operational amplifier LM324 of the amplifying circuit is connected with the chip MSP430, and the chip MSP430 is connected with the magnetorheological damper. The novel current controller of the magnetorheological damper is used for a current controller.
Description
technical field:
the utility model relates to a kind of New type of current controller of MR damper.
background technique:
the current-responsive time of the current controller of existing rheological damper is slow, while reaching the time of unstable state, can not provide constant follow current; The precision of output current is low, and stand-by power consumption is large, and efficiency is low.
summary of the invention:
the purpose of this utility model is to provide a kind of low power consumption that has, the New type of current controller of the MR damper of high efficiency Intelligent current control system.
above-mentioned purpose realizes by following technological scheme:
a kind of New type of current controller of MR damper, its composition comprises: housing, chip MSP430 is housed in described housing, described chip MSP430 connects pulse regulation and control control chip SG3525, described pulse regulation and control control chip SG3525 circuit connects PWM and drives chip EXB841, described PWM drives chip EXB841 to connect BUCK main circuit IGBT, described BUCK main circuit IGBT connects current transformer ACS712, described current transformer ACS712 connects amplification circuit amplifier LM324, described amplification circuit amplifier LM324 connects described chip MSP430, described chip MSP430 connects MR damper.
the New type of current controller of described MR damper, described MR damper comprises cylinder body, in described cylinder body, piston is housed, piston rod is through described piston and extend to described cylinder body outer end, field coil is wrapped in outside described piston, and described field coil connects described chip MSP430.
the New type of current controller of described MR damper, described pulse regulation and control control chip SG3525 circuit comprises current feedback circuit, PWM pulse-width modulation circuit, drive circuit, single chip circuit.
beneficial effect:
1. the utility model can provide continuously adjustable, stable, and high-precision controlled constant electric current makes MR damper carry out the regulation output damping force according to the size of current in the input field coil.
the utility model adopts novel PWM BUCK change-over circuit, by the PWM regulating and controlling electric current to switching tube, than conventional current controling appliance, has low in energy consumptionly, and conversion efficiency is high, strong anti-interference performance.
the current-responsive time of the current controller of rheological damper of the present utility model, than very fast, reaches the time of stable state 5 milliseconds of left and right, and the constant follow current of 0～2A can be provided; The precision of output current reaches 1%, and output voltage ripple is in 2%, and main chip all adopts the low power consumption type, and stand-by power consumption is little, and efficiency reaches 93%.
the accompanying drawing explanation:
accompanying drawing 1 is the structural representation of this product.
accompanying drawing 2 is structural representations of the MR damper of this product.
accompanying drawing 3 is Zero voltage transition PWM conversion circuit figure of accompanying drawing 1.
accompanying drawing 4 is PWM pulse-width modulation circuit figure of accompanying drawing 1.
accompanying drawing 5 is drive circuit figure of accompanying drawing 1.
accompanying drawing 6 is current feedback circuit figure of accompanying drawing 1.
accompanying drawing 7 is single chip circuit figure of accompanying drawing 1.
accompanying drawing 8 is the 5v of accompanying drawing 1 and the conversion electricity of 3.3vroad
figure.
in circuit diagram, same-sign has annexation.
embodiment:
embodiment 1:
a kind of New type of current controller of MR damper, its composition comprises: chip 2 model MSP430 are housed in the described housing of housing 1, described chip MSP430 connects pulse regulation and control control chip 3 model SG3525, described pulse regulation and control control chip SG3525 circuit connects PWM and drives chip 4 model EXB841, described PWM drives chip EXB841 to connect BUCK main circuit IGBT5, described BUCK main circuit IGBT connects current transformer 6 model ACS712, described current transformer ACS712 connects amplification circuit amplifier 7 model LM324, described amplification circuit amplifier LM324 connects described chip MSP430, described chip MSP430 connects MR damper.
embodiment 2:
the New type of current controller of embodiment's 1 described MR damper, described MR damper comprises cylinder body 8, piston 9 is housed in described cylinder body, piston rod 10 is through described piston and extend to described cylinder body outer end, field coil 11 is wrapped in outside described piston, and described field coil connects described chip MSP430.
embodiment 3:
the New type of current controller of embodiment's 1 described MR damper, described pulse regulation and control control chip SG3525 circuit comprises current feedback circuit, PWM pulse-width modulation circuit, drive circuit, single chip circuit.
embodiment 4:
the New type of current controller of embodiment 1 or 2 or 3 rheological damper, accompanying drawing 3 is Zero voltage transition PWM conversion circuits, it adopts auxiliary resonant net in parallel with primary power switch device, under the soft on off state of main switch work, does not increase withstand voltage level and current stress.There is not larger circulation energy in resonant network, thereby has reduced the conduction loss of circuit.There is not turn-on consumption in circuit, and the loss of turn-offing has also obtained corresponding reduction.In addition, circuit can be operated under very wide input voltage and output loading change condition.
circuit structure shows as Fig. 3, direct-current input power supplying Uin wherein, and filter capacitor C1 filter inductance L1, main switch S1, fly-wheel diode VD forms basic Buck circuit; VDs is the anti-paralleled diode of main switch S1, and S2 is auxiliary switch, and Cr is that resonant capacitance and Lr are resonant inductances, and VD1 is booster diode, and resonant network is comprised of S2, Cr, Lr, VD1.
the simulation parameter design of circuit is as follows: input voltage Ui=100V, filter inductance L1=50uH, filter capacitor C1=20uF, resonant inductance Lr=10uH, resonant capacitance Cr=10nF, load R1=5 Ω, switching frequency f=40KHZ, dutycycle S1=40%, S2=20%, that main switch and auxiliary switch are selected is the IGBT that model is IRGPC50S.
embodiment 5:
the New type of current controller of embodiment 1 or 2 or 3 rheological damper, the WM pulse-width modulation circuit of control circuit, system is selected PWM special chip SG3525 output two-way pwm signal.This pulse width modulation controlled chip SG3525 has the chip of the functions such as under-voltage locking, the system failure are closed, soft start time delay PWM driving.
the circuit diagram of control system shows as attached 4, adopts two closed control circuits to realize output voltage stabilization.The voltage of load feeds back to pin 1 end (error amplifier reverse input end) of SG3525 through the R1 sampling; Chip Microcomputer A/D uC812 gathers the R1 sampling voltage, by software, carries out the PID adjusting, feeds back to pin 2 ends (error amplifier is input end in the same way) of SG3525 after the D/A conversion; The voltage of the pin 1,2 of SG3525 passes through the chip internal error amplifier relatively and output error voltage, error voltage compares by comparator and sawtooth wave, the pwm pulse of a pulse width variability of 11 pin outputs is regulated the DC-DC conversion circuit, finally realizes output voltage stabilization, adjustable.
the switching device of choosing in the meter of drive circuit is IGBT, and model is IXGH40N60A, and rated insulation voltage is 600v, and its maximum collector currnt is 75A, can meet system requirements.Driving to IGBT adopts integrated drive chips EXB84l, and drive circuit design as attached 5 is shown.
current feedback circuit all crosses Hall transducer by the current sample that flows through in the MR damper field coil out, converts the form of voltage to, then is input in amplification circuit and goes.Hall transducer can connect the output current in output inductor.In amplification circuit, R1=R2, R3=R4, magnification factor A=R3/R1+1.Get R1=R2=1K Ω, R3=R4=20K Ω.The current transformation of voltage type current sensor is than being 1:100, and the electric current flow through in MR damper is at 0 ~ 1.5A, so magnification factor should be 20 times.After the signal after amplifying is sent in the ADC of MSP430 single-chip microcomputer and turned, feed back to again SG3525 and export corresponding PWM ripple after computational analysis.Adopt currrent feedback to control and there are the fireballing characteristics of dynamic response.
as accompanying drawing 7 single chip circuits 30 it to have Processing capacity strong, the advantage such as motion speed is fast, low in energy consumption, and 12 bit A/D converter ADC 12 are arranged, price performance is very high.In addition, this series monolithic is at super low-power consumption with function is integrated etc. that there is significant advantage aspect.
the change-over circuit that accompanying drawing 7 is 5v and 3.3v.Utilizing ADG3304 to carry out electrical level conversion circuit shows as attached 8.Match circuit adopts the electrical level transferring chip ADG3304 of ADI company.This chip is the two-way level converting chip, operating voltage 1.15V ~ 5.5V, and static action current is less than l μ A.And ADG3304 controls pin without the level conversion direction, can not need to select directly to carry out level conversion through direction.
Claims (3)
1. the New type of current controller of a MR damper, its composition comprises: housing, it is characterized in that: chip MSP430 is housed in described housing, described chip MSP430 connects pulse regulation and control control chip SG3525, described pulse regulation and control control chip SG3525 circuit connects PWM and drives chip EXB841, described PWM drives chip EXB841 to connect BUCK main circuit IGBT, described BUCK main circuit IGBT connects current transformer ACS712, described current transformer ACS712 connects amplification circuit amplifier LM324, described amplification circuit amplifier LM324 connects described chip MSP430, described chip MSP430 connects MR damper.
2. the New type of current controller of MR damper according to claim 1, it is characterized in that: described MR damper comprises cylinder body, in described cylinder body, piston is housed, piston rod is through described piston and extend to described cylinder body outer end, field coil is wrapped in outside described piston, and described field coil connects described chip MSP430.
3. the New type of current controller of MR damper according to claim 1 and 2 is characterized in that: described pulse regulation and control control chip SG3525 circuit comprises current feedback circuit, PWM pulse-width modulation circuit, drive circuit, single chip circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203600140U CN202690866U (en) | 2012-07-24 | 2012-07-24 | Novel current controller of magnetorheological damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203600140U CN202690866U (en) | 2012-07-24 | 2012-07-24 | Novel current controller of magnetorheological damper |
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| Publication Number | Publication Date |
|---|---|
| CN202690866U true CN202690866U (en) | 2013-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012203600140U Expired - Fee Related CN202690866U (en) | 2012-07-24 | 2012-07-24 | Novel current controller of magnetorheological damper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513695A (en) * | 2013-05-31 | 2014-01-15 | 浙江大学 | Current controller for magneto-rheological damper |
| CN105827184A (en) * | 2016-03-31 | 2016-08-03 | 北方工业大学 | Magneto-rheological damper energy management control method based on photovoltaic power generation system |
| CN108322066A (en) * | 2017-12-29 | 2018-07-24 | 河南北瑞电子科技有限公司 | A kind of Switching Power Supply with protective device |
-
2012
- 2012-07-24 CN CN2012203600140U patent/CN202690866U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513695A (en) * | 2013-05-31 | 2014-01-15 | 浙江大学 | Current controller for magneto-rheological damper |
| CN105827184A (en) * | 2016-03-31 | 2016-08-03 | 北方工业大学 | Magneto-rheological damper energy management control method based on photovoltaic power generation system |
| CN105827184B (en) * | 2016-03-31 | 2019-10-29 | 北方工业大学 | MR damper energy management control method based on photovoltaic generating system |
| CN108322066A (en) * | 2017-12-29 | 2018-07-24 | 河南北瑞电子科技有限公司 | A kind of Switching Power Supply with protective device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Xiaoyan Inventor after: Wang Peng Inventor after: Wang Yueming Inventor after: Zhao Yan Inventor before: Zhao Xiaoyan Inventor before: Wang Peng Inventor before: Wang Yueming Inventor before: Zhao Yan |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20130724 |