CN102751942A - Circuit with output by motor driving and throttle control mechanism as well as excavator - Google Patents
Circuit with output by motor driving and throttle control mechanism as well as excavator Download PDFInfo
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- CN102751942A CN102751942A CN2012102322941A CN201210232294A CN102751942A CN 102751942 A CN102751942 A CN 102751942A CN 2012102322941 A CN2012102322941 A CN 2012102322941A CN 201210232294 A CN201210232294 A CN 201210232294A CN 102751942 A CN102751942 A CN 102751942A
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Abstract
The invention relates to the field of electronic circuits, and particularly relates to a circuit with output by motor driving and a throttle control mechanism as well as an excavator. According to the circuit, the throttle control mechanism and the excavator, two ends of an MOS (metal oxide semiconductor) pipe of a throttle motor driving circuit are connected in parallel with a diode in a reverse manner, so that disturbance voltage can be clamped so as to protect the MOS pipe, but also the reverse afterflow of the MOS pipe can carry out overflowing protection, and a throttle motor driving chip can carry out normal operation under a condition of being subject to large energy interference; and the protective capability of the throttle motor driving chip is greatly strengthened, and the damage on the throttle motor driving chip is effectively avoided.
Description
Technical field
The present invention relates to electronic circuit field, relate in particular to a kind of circuit and Throttle Opening Control mechanism and excavator of motor-driven output.
Background technology
Excavator mainly is the position of controlling the throttle fork through the throttle motor, with the rotating speed of control engine; The electrode drive circuit of throttle motor mainly is made up of the H bridge that metal-oxide-semiconductor constitutes, and corresponding M OS pipe then is integrated on the motor drive ic.
Because the voltage endurance capability and the afterflow ability of metal-oxide-semiconductor are lower, and the interference of throttle motor harness is very big, can cause certain infringement to motor drive ic; Disturbed by electrical surge and produce overcurrent or overvoltage phenomenon like metal-oxide-semiconductor, thereby cause the damage of whole motor drive ic.
Summary of the invention
For addressing the above problem, provide a kind of at present and be intended to solve owing to disturbed and on metal-oxide-semiconductor, produce overcurrent or overvoltage phenomenon, thereby cause the technical scheme of the damage of whole motor drive ic by electrical surge:
A kind of circuit of motor-driven output; Comprise throttle motor and drive circuit; Said drive circuit is connected with said throttle motor; Wherein, said drive circuit comprises first power supply, second source, first metal-oxide-semiconductor, second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, the 4th metal-oxide-semiconductor, first diode, second diode, the 3rd diode and the 4th diode;
Said throttle motor one end is connected with the source electrode of said first metal-oxide-semiconductor, the drain electrode of second metal-oxide-semiconductor, and the other end is electrically connected with the source electrode of the 3rd metal-oxide-semiconductor, the drain electrode of the 4th metal-oxide-semiconductor, to constitute H type electric bridge;
The drain electrode of said first metal-oxide-semiconductor is electrically connected with first power supply, and the drain electrode of said the 3rd metal-oxide-semiconductor is electrically connected with second source, the grounded drain of said second metal-oxide-semiconductor and said the 4th metal-oxide-semiconductor;
Said first diode, said second diode, said the 3rd diode and said the 4th diode are parallelly connected with said first metal-oxide-semiconductor, said second metal-oxide-semiconductor, said the 3rd metal-oxide-semiconductor and said the 4th metal-oxide-semiconductor respectively successively; The drain electrode of above-mentioned each metal-oxide-semiconductor connects with the cathodic electricity of corresponding diode connected in parallel, and source electrode then is electrically connected with the anode of this diode connected in parallel.
Preferably, said first diode, said second diode, said the 3rd diode and said the 4th diode are the transient voltage restraining diode.
Preferably, said first diode and said the 3rd diode are fly-wheel diode, and said second diode and said the 4th diode are the transient voltage restraining diode.
A kind of Throttle Opening Control mechanism wherein, comprises the circuit of above-mentioned motor-driven output.
A kind of excavator wherein, comprises above-mentioned Throttle Opening Control mechanism.
Technique scheme; Through the metal-oxide-semiconductor two ends reverse parallel connection diode in the throttle motor-drive circuit; Can not only the clamp interference voltage with the protection metal-oxide-semiconductor, can also carry out overcurrent protection to the reverse afterflow of metal-oxide-semiconductor, thereby make that the throttle motor drive ic still can operate as normal when receiving macro-energy and disturb; Strengthen the protective capability of motor drive ic greatly, effectively avoided the damage of motor drive ic.
Description of drawings
Through the detailed description that reading is done non-limiting example with reference to following accompanying drawing, further feature of the present invention, it is more obvious that purpose and advantage will become.
Fig. 1 is the circuit topology figure of the embodiment of circuit one of motor-driven output of the present invention;
Fig. 2 is the circuit topology figure of the embodiment of circuit two of motor-driven output of the present invention.
Embodiment
For technological means that the present invention is realized, create characteristic, reach purpose and effect and be easy to understand and understand that following combinations specifically illustrates, and further sets forth embodiments of the invention.
Embodiment one:
Fig. 1 is the circuit topology figure of the embodiment of circuit one of motor-driven output of the present invention;
As shown in Figure 1; The throttle motor respectively with the source S end of the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, the 3rd metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4 H bridge that is electrically connected to form; The drain D end of the first metal-oxide-semiconductor Q1 is electrically connected with the first power supply VCC1; The drain D end of the 3rd metal-oxide-semiconductor Q3 is electrically connected with second source VCC2, the equal ground connection of drain D end of the second metal-oxide-semiconductor Q2 and the 4th metal-oxide-semiconductor Q4; The anode of the first transient voltage restraining diode Z1 and the 3rd transient voltage restraining diode Z3 all is electrically connected with the throttle motor; The negative electrode of the first transient voltage restraining diode Z1 is electrically connected with the drain electrode of first metal-oxide-semiconductor, and the negative electrode of the 3rd transient voltage restraining diode Z3 is electrically connected with the drain electrode of the 3rd metal-oxide-semiconductor; The negative electrode of the second transient voltage restraining diode Z2 and the 4th transient voltage restraining diode Z4 all is electrically connected with the throttle motor; The anode of the second transient voltage restraining diode Z2 is electrically connected with the source electrode of second metal-oxide-semiconductor, and the anode of the 4th transient voltage restraining diode Z4 is electrically connected with the source electrode of the 4th metal-oxide-semiconductor.
Concrete; When throttle motor-drive circuit operate as normal; The first transient voltage restraining diode Z1, the second transient voltage restraining diode Z2, the 3rd transient voltage restraining diode Z3 and the 4th transient voltage restraining diode Z4 all are in reverse blocking state, and drive circuit is not produced any influence; When the throttle motor-drive circuit runs into interference; Like interference voltage is positive pulse; Then the second transient voltage restraining diode Z2 and the 4th transient voltage restraining diode Z4 are in the clamp interference voltage in the withstand voltage scope of metal-oxide-semiconductor, to protect the second metal-oxide-semiconductor Q2 and the 4th metal-oxide-semiconductor Q4 not breakdown; When interference voltage is a negative pulse, the then first transient voltage restraining diode Z1 and the 3rd transient voltage restraining diode Z3 conducting, the clamp interference voltage is in the withstand voltage scope of metal-oxide-semiconductor, to protect the first metal-oxide-semiconductor Q1 and the 3rd metal-oxide-semiconductor Q3 not breakdown; And when the grid of metal-oxide-semiconductor does not have driving voltage; During all reverse afterflow of the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, the 3rd metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4; The first transient voltage restraining diode Z1, the second transient voltage restraining diode Z2, the 3rd transient voltage restraining diode Z3 and the 4th transient voltage restraining diode Z4 be then all conductings all, so that metal-oxide-semiconductor is carried out overcurrent protection.
Embodiment two:
Fig. 2 is the circuit topology figure of the embodiment of circuit two of motor-driven output of the present invention;
As shown in Figure 2; On the basis of embodiment one; The diode that is electrically connected with the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 source class respectively is set to first sustained diode 1 and the 3rd sustained diode 3; Wherein, the negative electrode of first sustained diode 1 is electrically connected with the drain electrode of first metal-oxide-semiconductor, and the negative electrode of the 3rd sustained diode 3 is electrically connected with the drain electrode of the 3rd metal-oxide-semiconductor; Other components and parts and annexation thereof are all identical, can play the defencive function that the metal-oxide-semiconductor in the throttle motor-drive circuit is carried out the overvoltage overcurrent equally.
In sum; The circuit of a kind of motor-driven output of the foregoing description; Through metal-oxide-semiconductor two ends reverse parallel connection fly-wheel diode or the transient voltage restraining diode in the throttle motor-drive circuit; Can not only the clamp interference voltage with the protection metal-oxide-semiconductor, can also carry out overcurrent protection to the reverse afterflow of metal-oxide-semiconductor, thereby make that the throttle motor drive ic still can operate as normal when receiving macro-energy and disturb; Strengthen the protective capability of motor drive ic greatly, effectively avoided the damage of motor drive ic.
Except the circuit of above-mentioned motor-driven output, the embodiment of the invention also provides a kind of Throttle Opening Control mechanism, comprises the circuit of above-mentioned motor-driven output, and all the other structures please refer to prior art, do not repeat them here.
Except the circuit and the Throttle Opening Control mechanism of above-mentioned motor-driven output, the embodiment of the invention also provides a kind of excavator, comprises above-mentioned Throttle Opening Control mechanism, and all the other structures please refer to prior art, do not repeat them here.
More than specific embodiment of the present invention is described.It will be appreciated that the present invention is not limited to above-mentioned specific implementations, equipment of wherein not describing in detail to the greatest extent and structure are construed as with the common mode in this area to be implemented; Those skilled in the art can make various distortion or modification within the scope of the claims, and this does not influence flesh and blood of the present invention.
Claims (5)
1. the circuit of motor-driven output; Comprise throttle motor and drive circuit; Said drive circuit is connected with said throttle motor; It is characterized in that said drive circuit comprises first power supply, second source, first metal-oxide-semiconductor, second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor, the 4th metal-oxide-semiconductor, first diode, second diode, the 3rd diode and the 4th diode;
Said throttle motor one end is connected with the source electrode of said first metal-oxide-semiconductor, the drain electrode of second metal-oxide-semiconductor, and the other end is electrically connected with the source electrode of the 3rd metal-oxide-semiconductor, the drain electrode of the 4th metal-oxide-semiconductor, to constitute H type electric bridge;
The drain electrode of said first metal-oxide-semiconductor is electrically connected with first power supply, and the drain electrode of said the 3rd metal-oxide-semiconductor is electrically connected with second source, the grounded drain of said second metal-oxide-semiconductor and said the 4th metal-oxide-semiconductor;
Said first diode, said second diode, said the 3rd diode and said the 4th diode are parallelly connected with said first metal-oxide-semiconductor, said second metal-oxide-semiconductor, said the 3rd metal-oxide-semiconductor and said the 4th metal-oxide-semiconductor respectively successively; The drain electrode of above-mentioned each metal-oxide-semiconductor connects with the cathodic electricity of corresponding diode connected in parallel, and source electrode then is electrically connected with the anode of this diode connected in parallel.
2. the circuit of motor-driven output according to claim 1 is characterized in that said first diode, said second diode, said the 3rd diode and said the 4th diode are the transient voltage restraining diode.
3. the circuit of motor-driven output according to claim 1 is characterized in that said first diode and said the 3rd diode are fly-wheel diode, and said second diode and said the 4th diode are the transient voltage restraining diode.
4. a Throttle Opening Control mechanism is characterized in that, comprises the circuit like arbitrary said motor-driven output among the claim 1-3.
5. an excavator is characterized in that, comprises the Throttle Opening Control mechanism described in claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102322941A CN102751942A (en) | 2012-07-06 | 2012-07-06 | Circuit with output by motor driving and throttle control mechanism as well as excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102322941A CN102751942A (en) | 2012-07-06 | 2012-07-06 | Circuit with output by motor driving and throttle control mechanism as well as excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102751942A true CN102751942A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102322941A Pending CN102751942A (en) | 2012-07-06 | 2012-07-06 | Circuit with output by motor driving and throttle control mechanism as well as excavator |
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| Country | Link |
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| CN (1) | CN102751942A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429615A (en) * | 2016-01-08 | 2016-03-23 | 南京国电南自电网自动化有限公司 | Anti-interference loop for rapid exit of IGBT |
| CN107366147A (en) * | 2017-09-07 | 2017-11-21 | 章德恩 | A kind of Garment Steamer Machine |
| CN115219764A (en) * | 2022-07-11 | 2022-10-21 | 上海钧嵌传感技术有限公司 | Pulse current protection circuit and method for current sensor and current sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09266692A (en) * | 1996-03-28 | 1997-10-07 | Nec Kansai Ltd | Driving device |
| CN101009470A (en) * | 2006-01-24 | 2007-08-01 | 孙玉华 | A power circuit for the calculating device |
| CN101465562A (en) * | 2007-12-21 | 2009-06-24 | 上海航空电器有限公司 | Remote DC load controller |
| CN202261070U (en) * | 2011-10-09 | 2012-05-30 | 郑州朗睿科技有限公司 | H-bridge inverter circuit |
-
2012
- 2012-07-06 CN CN2012102322941A patent/CN102751942A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09266692A (en) * | 1996-03-28 | 1997-10-07 | Nec Kansai Ltd | Driving device |
| CN101009470A (en) * | 2006-01-24 | 2007-08-01 | 孙玉华 | A power circuit for the calculating device |
| CN101465562A (en) * | 2007-12-21 | 2009-06-24 | 上海航空电器有限公司 | Remote DC load controller |
| CN202261070U (en) * | 2011-10-09 | 2012-05-30 | 郑州朗睿科技有限公司 | H-bridge inverter circuit |
Non-Patent Citations (1)
| Title |
|---|
| 周峰等: "天然气发动机电子节气门控制系统的研究", 《车用发动机》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429615A (en) * | 2016-01-08 | 2016-03-23 | 南京国电南自电网自动化有限公司 | Anti-interference loop for rapid exit of IGBT |
| CN107366147A (en) * | 2017-09-07 | 2017-11-21 | 章德恩 | A kind of Garment Steamer Machine |
| CN115219764A (en) * | 2022-07-11 | 2022-10-21 | 上海钧嵌传感技术有限公司 | Pulse current protection circuit and method for current sensor and current sensor |
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Application publication date: 20121024 |