CN102480121B - A kind of load overcurrent guard method based on self-recovering function - Google Patents
A kind of load overcurrent guard method based on self-recovering function Download PDFInfo
- Publication number
- CN102480121B CN102480121B CN201010559637.6A CN201010559637A CN102480121B CN 102480121 B CN102480121 B CN 102480121B CN 201010559637 A CN201010559637 A CN 201010559637A CN 102480121 B CN102480121 B CN 102480121B
- Authority
- CN
- China
- Prior art keywords
- stall
- overcurrent protection
- motor
- overcurrent
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Protection Of Generators And Motors (AREA)
- Control Of Ac Motors In General (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention relates to a kind of load overcurrent guard method based on self-recovering function, it is characterized in that comprising the following steps: 1) gather load current by Fixed Time Interval; 2) according to the size of load current, first time stall is judged whether; 3) overcurrent protection is carried out: motor distribution stops follow-up continued access 0.5-1 second to lead to; 5), after connecting, continue to judge whether continuously stall again; 6), when there is stall, protection motor, carries out overcurrent protection, so moves in circles and carry out; Can effectively realize more reasonably controlling the load of complicated machinery device; The method is simple, and convenient operation personnel understand and accept.
Description
Technical field
The present invention relates to intelligent power electronic switch application, specifically, relating to the load overcurrent guard method to proposing based on the electric machinery load with complex mechanical structure in the Distribution Management System of intelligent power electronic switch.
Background technology
The mechanical device that in vehicle, some electric machinery duty driving ratio is more complicated, causes mechanical device to be blocked in running halfway because mechanical device is too complicated or mechanical structure damping is too large, causes motor rotation blockage; If the time of motor rotation blockage, the longer motor that will cause was burnt; if but now for protection motor stops to feeding electric motors immediately; allow motor quit work, tasks interrupt will be caused due to disable motor, make important work unsuccessfully affect completing of vehicle task.
Traditional fuse is broken by the hot melt of fuse and realizes overcurrent protection, and novel semiconductor device intelligence overcurrent protection is all after load overcurrent, cut off load distribution and realize overcurrent protection.The feature of these overcurrent protection distribution systems is all implement power-off protection immediately after load overcurrent; will overcurrent protection be carried out immediately when the device of some mechanical structure more complicated causes drive motors at stall due to the blocking a little of mechanical structure and turn off motor load distribution like this, and make tasks interrupt.And those mechanical structures be blocked will get loose after the mechanical structure drive motors power-off of some complexity, these mechanical devices just can be made normally to work so at this moment carry out distribution to drive motors again, and can not interruption of work.
Summary of the invention
The object of the invention is to, in view of the foregoing defects the prior art has, provide a kind of load overcurrent guard method based on self-recovering function, the method is mainly for the motor load of drive ratio on special vehicle compared with complicated machinery device.
Mechanical blocking can be produced for a certain reason in mechanical device course of action, thus cause motor rotation blockage.
A kind of load overcurrent guard method based on self-recovering function provided by the invention, its improvements are to comprise step:
Judge stall, judge whether again to judge after taking overcurrent protection and taking overcurrent protection the cyclic process of stall.
Provided by the invention first preferably based on the load overcurrent guard method of self-recovering function, describedly judges that stall is for by Fixed Time Interval collection load current; According to the size of load current, judge whether first time stall.
Provided by the invention second preferably based on the load overcurrent guard method of self-recovering function, described in judge whether to take overcurrent protection be:
According to judging the result after stall, when there is stall, carry out overcurrent protection.
Provided by the invention 3rd preferably based on the load overcurrent guard method of self-recovering function, and described overcurrent protection is: after motor distribution being stopped 0.5-1 second, then continue to connect.
Provided by the invention 4th preferably based on the load overcurrent guard method of self-recovering function, described in take overcurrent protection after again judge that stall is:
After continuing connection, judge whether continuously stall again, if there is stall, then carry out overcurrent protection, protection motor, so moves in circles and carries out.
Technique scheme and design thereof:
When there is stall, motor first power-off stops, allows the mechanical device blocked get loose, and then works on by it to electrical power, if blocking is eliminated, then work continuation; If blocking still exists, then protection is implemented to the overcurrent that stall causes, thus realize the chance of a retry.
When mechanical blocking causes motor rotation blockage and exceedes predetermined time, turned off to the motor of stall 0.5-1 second, allow the mechanical device of clamping loosen; Then again connect distribution to motor and continue to detect electric current, if normally, then work continuation; If still overcurrent, and exceed predetermined time, then overcurrent protection in real time.
Load overcurrent guard method based on twice connection carries out overcurrent protection when monitoring motor rotation blockage, then connects motor after time delay a period of time again and works on by mechanical device, thus reduce unnecessary protection act; And such protection is completely transparent for operating personnel, because the time that motor has a power failure is very short, operating personnel are completing and not knowing whether occurred motor rotation blockage in the implementation of task of sensation task.
The method can also be carried out three times four times and more times distribution self-recoverage process according to the mechanical structure of load motor and operating characteristic.
Compared with prior art, a kind of load overcurrent guard method based on self-recovering function provided by the invention has the following advantages:
1, can effectively realize more reasonably controlling the load of complicated machinery device;
2, the method is simple, and convenient operation personnel understand and accept;
3, unnecessary protection act can be reduced;
4, self-recovering function, saves time and manpower, for user brings convenience;
5, low cost of manufacture, has optimistic commercial promise.
Accompanying drawing explanation
Fig. 1 is: the current curve in a kind of guard method-vehicle Mechatronic Systems of the load overcurrent based on self-recovering function provided by the invention during drive motors work;
Fig. 2 is: a kind of guard method of the load overcurrent based on self-recovering function-motor self-recoverage protective current curve synoptic diagram provided by the invention;
Fig. 3 is: the workflow diagram of a kind of load overcurrent guard method process based on self-recovering function provided by the invention.
Embodiment
Below by way of embodiment, further more detailed description is done to a kind of load overcurrent guard method based on self-recovering function provided by the invention;
embodiment 1
The load overcurrent guard method based on self-recovering function of the present embodiment, the change in resistance of the device driven due to motor is as can be seen from Figure 1 larger.
Motor first time stall after realize overcurrent cut off power supply and then connect, if now or motor rotation blockage cause overcurrent, just to motor cut-out power supply carry out overcurrent protection.
As shown in Figure 2, concrete implementation process as shown in Figure 3 for the signal of motor self-recoverage protective current curve;
Comprise the following steps:
1) load current is gathered by Fixed Time Interval;
2) according to the size of load current, first time stall is judged whether;
3) according to the judged result of step 2, if there is stall, then overcurrent protection is carried out: stopped by motor distribution follow-up continued access in 0.5 second to lead to;
4), after connecting, stall again is then judged whether continuously;
5) if there is stall, then protect motor, carry out overcurrent protection, so circulate, back and forth carry out.
embodiment 2
The load overcurrent guard method based on self-recovering function of the present embodiment, the change in resistance of the device driven due to motor is as can be seen from Figure 1 larger.
Motor first time stall after realize overcurrent cut off power supply and then connect, if now or motor rotation blockage cause overcurrent, just to motor cut-out power supply carry out overcurrent protection.
As shown in Figure 2, concrete implementation process as shown in Figure 3 for the signal of motor self-recoverage protective current curve;
Comprise the following steps:
1) load current is gathered by Fixed Time Interval;
2) according to the size of load current, first time stall is judged whether;
3) according to the judged result of step 2, if there is stall, then overcurrent protection is carried out: stopped by motor distribution follow-up continued access in 1 second to lead to;
4), after connecting, stall again is then judged whether continuously;
5) if there is stall, then protect motor, carry out overcurrent protection, so circulate, back and forth carry out.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; although with reference to above-described embodiment to invention has been detailed description; those of ordinary skill in the field are to be understood that: technical staff still can modify to the specific embodiment of the present invention after reading present specification or equivalent replacement, but these amendments or change all do not depart within the present patent application accompanying claims protection range.
Claims (1)
1., based on a load overcurrent guard method for self-recovering function, it is characterized in that comprising step:
Judge stall, judge whether again to judge after taking overcurrent protection and taking overcurrent protection the cyclic process of stall;
Described judge stall as by Fixed Time Interval gather load current; According to the size of load current, judge whether first time stall;
Described judging whether takes overcurrent protection to be according to judging the result after stall, carries out overcurrent protection when there is stall;
Described overcurrent protection is: motor distribution is stopped 0.5 ?after 1 second, then continue connect;
Described take overcurrent protection after again judge that stall is:
After continuing connection, judge whether continuously stall again, if there is stall, then carry out second time overcurrent protection, protection motor, so moves in circles and carries out; Described second time overcurrent protection is: cut off power supply to motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010559637.6A CN102480121B (en) | 2010-11-26 | 2010-11-26 | A kind of load overcurrent guard method based on self-recovering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010559637.6A CN102480121B (en) | 2010-11-26 | 2010-11-26 | A kind of load overcurrent guard method based on self-recovering function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102480121A CN102480121A (en) | 2012-05-30 |
| CN102480121B true CN102480121B (en) | 2016-03-30 |
Family
ID=46092653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010559637.6A Expired - Fee Related CN102480121B (en) | 2010-11-26 | 2010-11-26 | A kind of load overcurrent guard method based on self-recovering function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102480121B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944487B (en) * | 2014-02-26 | 2016-06-22 | 上虞市冠业电器有限公司 | Direct current generator current-limiting protection circuit |
| CN104953900A (en) * | 2014-03-31 | 2015-09-30 | 海洋王（东莞）照明科技有限公司 | Three-phase DC fan control circuit and three-phase DC fan |
| CN104167716B (en) * | 2014-08-07 | 2017-03-22 | 珠海格力电器股份有限公司 | Protection control method and system for power factor correction circuit |
| CN110554317A (en) * | 2019-09-24 | 2019-12-10 | 格力电器（武汉）有限公司 | Motor locked-rotor experiment monitoring system, monitoring method and monitoring device thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6177774B1 (en) * | 1998-02-27 | 2001-01-23 | Fanuc Limited | Motor controller based on PWM system |
| CN1815871A (en) * | 2005-01-31 | 2006-08-09 | 台达电子工业股份有限公司 | DC brush-less motor driving device without hull assembly |
| CN201179470Y (en) * | 2008-02-26 | 2009-01-14 | 泓首翔电器（深圳）有限公司 | Meat grinder with overload protection function |
| CN101710694A (en) * | 2009-11-26 | 2010-05-19 | 上海大学 | Car engine cooling fan blocking/overcurrent protection system and method |
-
2010
- 2010-11-26 CN CN201010559637.6A patent/CN102480121B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6177774B1 (en) * | 1998-02-27 | 2001-01-23 | Fanuc Limited | Motor controller based on PWM system |
| CN1815871A (en) * | 2005-01-31 | 2006-08-09 | 台达电子工业股份有限公司 | DC brush-less motor driving device without hull assembly |
| CN201179470Y (en) * | 2008-02-26 | 2009-01-14 | 泓首翔电器（深圳）有限公司 | Meat grinder with overload protection function |
| CN101710694A (en) * | 2009-11-26 | 2010-05-19 | 上海大学 | Car engine cooling fan blocking/overcurrent protection system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102480121A (en) | 2012-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3656202B1 (en) | A lawn mower | |
| CN102480121B (en) | A kind of load overcurrent guard method based on self-recovering function | |
| CN203056953U (en) | Driver and bus capacitor discharge circuit thereof | |
| CN102790374B (en) | Short circuit protection circuit | |
| CN102769272A (en) | Failure latching and resetting system of power converter and power converter | |
| CN102315806B (en) | Smooth soft starting device of direct current motor | |
| CN101997459A (en) | DC oil pump motor soft start control device | |
| CN105490255A (en) | Linkage protection and alarm circuit driven by battery management system (BMS) high side | |
| CN104158152B (en) | A kind of motor driver protection circuit and means of defence | |
| CN102723693B (en) | Load protection circuit and method for electric tool | |
| CN102931034B (en) | Rccb | |
| CN201656898U (en) | AC asynchronous motor vector controller | |
| CN101789618B (en) | Wind-solar compensation type solar energy power supply system | |
| CN103631180B (en) | Isolating switch intelligent controller | |
| CN205811517U (en) | Dc motor protector | |
| CN206254820U (en) | Fire prevention charging pile with independent function for monitoring | |
| CN105226614A (en) | Safe and reliable DC motor control system and control method | |
| CN202405741U (en) | Self-recovery cut-off protective circuit for low-voltage high-power safety barrier | |
| CN203423638U (en) | Soft starter for direct current motor | |
| CN111029226A (en) | Prevent expense accuse circuit breaker control system and expense accuse circuit breaker of destruction | |
| CN203326565U (en) | Direct current motor control circuit with heat protection function | |
| CN201694209U (en) | Remote monitoring apparatus of railway signal equipment | |
| CN203086339U (en) | POE power supply device port circuit and POE power supply device | |
| CN206353764U (en) | A kind of motor driver for night flight control system | |
| CN202651747U (en) | Load protection method for electric tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160330 Termination date: 20171126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |