CN202918231U - Sewing machine brushless direct-current motor control system - Google Patents
Sewing machine brushless direct-current motor control system Download PDFInfo
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- CN202918231U CN202918231U CN2012205488836U CN201220548883U CN202918231U CN 202918231 U CN202918231 U CN 202918231U CN 2012205488836 U CN2012205488836 U CN 2012205488836U CN 201220548883 U CN201220548883 U CN 201220548883U CN 202918231 U CN202918231 U CN 202918231U
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Abstract
The utility model discloses a sewing machine brushless direct-current motor control system. The control system comprises a control module, a driving protection module, a motor rotor position and rotating speed detection module, a data transmission module and a three-phase motor. The driving protection module, the motor rotor position and rotating speed detection module and the data transmission module are electrically connected with the control module separately, the three-phase motor is electrically connected with the driving protection module, and the motor rotor position and rotating speed detection module is a Hall sensor detection module. According to the utility model, the Hall sensor detection module is used to detect the position and the rotating speed of the motor rotor, so compared with existing grating encoders, the control system of the utility model has the following advantages: 1, the advantage of flexible and diverse output mode can be realized; 2, 3600 programmable angle measurement can be performed; 3, the advantages of non-contact and high reliability can be realized; 4, the advantages of small size and easy assembly and disassembly can be realized; 5, the control system is applicable in various harsh industrial environments, such as the vibration environment, the high-temperature environment, the dust environment, etc.; and 6, the advantage of low cost can be realized, so the control system is more suitable for large-scale applications in the field of industrial control.
Description
Technical field
The utility model relates to a kind of sewing machine, specifically relates to a kind of control system of sewing machine brshless DC motor.
Background technology
At present, motor speed on the sewing machine brushless DC motor control system detects and generally realizes detecting by grating encoder, but grating encoder exists the shortcoming complicated, that reliability is lower, suitable environment is relatively poor is installed, and price is higher, result of use is not very good.
In addition, the main control part of present sewing machine brushless DC motor control system generally is to adopt the data of single CPU to process and control model, its processing speed is relatively slow, can not satisfy electric sewing machine high speed and moment and become the data processing demands that flower is large, the data amount of calculation is heavier and promptness is had relatively high expectations.
Summary of the invention
The purpose of this utility model is for above-mentioned existing problems and deficiency, provides a kind of and installs easily, reliability is high, cost is low, result of use is good, the control system of the sewing machine brshless DC motor of the speed of service and fast response time.
The technical solution of the utility model is achieved in that
The control system of sewing machine brshless DC motor described in the utility model; this control system comprises control module; drive protection module; motor rotor position and rotating speed detection module; data transmission module and three phase electric machine; wherein said driving protection module; motor rotor position is electrically connected with control module respectively with rotating speed detection module and data transmission module; described three phase electric machine is electrically connected with the driving protection module; and described control module is comprised of master cpu module and square wave or sine-wave generator module; described driving protection module drives protection module by rectification and three-phase inversion module and IGBT and forms, and is characterized in that described motor rotor position and rotating speed detection module are the Hall element detection module.
Wherein, above-mentioned Hall element detection module comprises Hall element, amplifier, A/D change-over circuit, digital filter circuit and digital signal processor, the output of wherein said Hall element is connected to the A/D change-over circuit by amplifier, and described A/D change-over circuit output is connected to digital signal processor by digital filter circuit.In order to make detection of the present utility model more accurate, above-mentioned Hall element is shown 4 or 8 by the mode that wiring board embeds by circumferential row.
In order effectively to improve the speed of service of the present utility model and response speed, this control system is the control system of multi-CPU structure, and above-mentioned square wave or sine-wave generator module, motor rotor position and rotating speed detection module and data transmission module are respectively by its corresponding CPU control and the unified control by above-mentioned master cpu module with coordinate and all events are carried out parallel processing.
The utility model is owing to having adopted the Hall element detection module that position and the rotating speed of rotor are detected, and it is compared with existing grating encoder has following advantage: 1, the way of output is versatile and flexible; 2,360
0Angular surveying able to programme; 3, contactless, reliability is high; 4, volume is little, is easy to installing/dismounting; 5, be fit to be applied to the various harsh industrial environments such as vibration, high temperature, dust; 6, price is low, is more suitable for the industrial control field large-scale application.
Further, because this control system has adopted the control system of multi-CPU structure, and realize in the control of master cpu module with under coordinating all events being carried out parallel processing, thereby effectively having improved the speed of service and the response speed of this control system, result of use is good.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is circuit structure schematic diagram of the present utility model.
Fig. 2 is the circuit structure schematic diagram of Hall element detection module of the present utility model.
Fig. 3 is the circuit structure schematic diagram of driving protection module of the present utility model.
Embodiment
As shown in Figure 1-Figure 3; the control system of sewing machine brshless DC motor described in the utility model; this control system comprises control module; drive protection module; motor rotor position and rotating speed detection module; data transmission module and three phase electric machine; wherein said driving protection module; motor rotor position is electrically connected with control module respectively with rotating speed detection module and data transmission module; described three phase electric machine is electrically connected with the driving protection module; and described control module is comprised of master cpu module and square wave or sine-wave generator module; described driving protection module drives protection module by rectification and three-phase inversion module and IGBT and forms; described motor rotor position and rotating speed detection module are the Hall element detection module; utilize the Hall element detection module to detect the position of rotor; and the position signalling that detects delivered to control module; then produce corresponding control signal and deliver to the driving protection module through carrying out computing with the given rotating speed of data transmission module, drive three phase electric machine by driving protection module output current voltage.
Wherein, as shown in Figure 2, above-mentioned Hall element detection module comprises Hall element, amplifier, A/D change-over circuit, digital filter circuit and digital signal processor, the output of wherein said Hall element is connected to the A/D change-over circuit by amplifier, and described A/D change-over circuit output is connected to digital signal processor by digital filter circuit.As preferred embodiment, described Hall element is shown 4 or 8 by the mode that wiring board embeds by circumferential row.The operation principle of described Hall element detection module is: adopt and be installed in the magnet steel in motor shaft front along the magnetized magnet of diametric(al), magnet will rotatablely move above the linear hall sensor axis of two one-tenth 90 degree, the two-way phase of output signal differs from 90 degree, namely providing a sinusoidal signal of angle and a cosine signal to rise by amplifier combines, sine and cosine signal are by two ADC converter digitals, and by the digital filter noise reduction, digital signal processor transforms output angle and the digital quantity of sinusoidal and cosine signal, its characteristics are that the way of output is versatile and flexible, exportable U/V/W and A/B/Z signal, 360
0Angular surveying able to programme, contactless, reliability is high, and volume is little, is easy to installing/dismounting, is fit to be applied to various harsh industrial environments.
As shown in Figure 1, above-mentioned data transmission module is for inputting display module or/and communication module.Wherein, the input display module mainly is comprised of LED nixie display, button and CPU module, main running status and the operating mode of being responsible for each operational factor of input and showing motor.The effect of communication module is multiple electric motors to be connected with host computer by RS-485, host computer can read running status and the operating mode of each motor, issue the speed of service, direction and the start-up time etc. that each control command and parameter change motor to each motor respectively, thereby realize the multiple electric motors interlock.
And above-mentioned master cpu module mainly is responsible for the PID control of motor speed, when motor moves, deduct rotary speed setting value (expectation rotating speed) from rotating speed measured value, the PID controller is processed speed error, and its output is as the given controlled quentity controlled variable of sinusoidal wave amplitude.That is to say; this control system is to utilize the Hall element detection module to detect the position of rotor; and the position signalling that detects delivered to master cpu module and square wave or sine-wave generator module; then pass through with the input display module or/and the given rotary speed data of communication module; the PID computing of being correlated with produces corresponding control signal and drives rectification and three-phase inversion module and IGBT driving protection module, makes it export our current/voltage of expectation and drives three phase electric machine.
Further, this control system is the control system of multi-CPU structure, above-mentioned square wave or sine-wave generator module, motor rotor position and rotating speed detection module and data transmission module are respectively by its corresponding CPU control and the unified control by above-mentioned master cpu module with coordinate and all events are carried out parallel processing, be conducive to like this improve the speed of service and the response speed of this control system, result of use is good.
In addition; as shown in Figure 3; the physical circuit of above-mentioned driving protection module includes IGBT Drive Protecting Circuit, rectification circuit, power factor (PF) emphasizer circuit and three-phase inverting circuit, and wherein the IGBT Drive Protecting Circuit is by IGBT drive circuit, circuit overcurrent protection, under-voltage overvoltage crowbar, IGBT virtual protection the electric circuit constitute.
The utility model is described by embodiment, but the utility model is not construed as limiting, with reference to description of the present utility model, other variations of the disclosed embodiments, easily expect such as the professional person for this area, such variation should belong within the utility model claim restricted portion.
Claims (5)
1. the control system of a sewing machine brshless DC motor; this control system comprises control module; drive protection module; motor rotor position and rotating speed detection module; data transmission module and three phase electric machine; wherein said driving protection module; motor rotor position is electrically connected with control module respectively with rotating speed detection module and data transmission module; described three phase electric machine is electrically connected with the driving protection module; and described control module is comprised of master cpu module and square wave or sine-wave generator module; described driving protection module drives protection module by rectification and three-phase inversion module and IGBT and forms, and it is characterized in that described motor rotor position and rotating speed detection module are the Hall element detection module.
2. the control system of described sewing machine brshless DC motor according to claim 1, it is characterized in that above-mentioned Hall element detection module comprises Hall element, amplifier, A/D change-over circuit, digital filter circuit and digital signal processor, the output of wherein said Hall element is connected to the A/D change-over circuit by amplifier, and described A/D change-over circuit output is connected to digital signal processor by digital filter circuit.
3. the control system of described sewing machine brshless DC motor according to claim 2 is characterized in that above-mentioned Hall element shows 4 or 8 by the mode that wiring board embeds by circumferential row.
4. the control system of described sewing machine brshless DC motor according to claim 1, it is characterized in that this control system is the control system of multi-CPU structure, above-mentioned square wave or sine-wave generator module, motor rotor position and rotating speed detection module and data transmission module are respectively by its corresponding CPU control and the unified control by above-mentioned master cpu module with coordinate and all events are carried out parallel processing.
5. the control system of described sewing machine brshless DC motor according to claim 1, it is characterized in that above-mentioned data transmission module for the input display module or/and communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205488836U CN202918231U (en) | 2012-10-25 | 2012-10-25 | Sewing machine brushless direct-current motor control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205488836U CN202918231U (en) | 2012-10-25 | 2012-10-25 | Sewing machine brushless direct-current motor control system |
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| Publication Number | Publication Date |
|---|---|
| CN202918231U true CN202918231U (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012205488836U Expired - Fee Related CN202918231U (en) | 2012-10-25 | 2012-10-25 | Sewing machine brushless direct-current motor control system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296787A (en) * | 2014-10-23 | 2015-01-21 | 杰克缝纫机股份有限公司 | Motor position detection sensing device on sewing machine |
| WO2015032126A1 (en) * | 2013-09-09 | 2015-03-12 | 惠州市蓝微电子有限公司 | Electric tool control circuit |
| CN104950258A (en) * | 2015-07-02 | 2015-09-30 | 天津汇讯视通科技有限公司 | Motor detection method and circuit for CCTV (closed circuit television) camera |
| CN105007005A (en) * | 2015-07-31 | 2015-10-28 | 付建文 | Brushless direct current motor speed adjusting system |
| CN113904595A (en) * | 2021-09-01 | 2022-01-07 | 九江七所精密机电科技有限公司 | Permanent magnet brushless direct current motor control system and control method thereof |
-
2012
- 2012-10-25 CN CN2012205488836U patent/CN202918231U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015032126A1 (en) * | 2013-09-09 | 2015-03-12 | 惠州市蓝微电子有限公司 | Electric tool control circuit |
| CN104296787A (en) * | 2014-10-23 | 2015-01-21 | 杰克缝纫机股份有限公司 | Motor position detection sensing device on sewing machine |
| CN104950258A (en) * | 2015-07-02 | 2015-09-30 | 天津汇讯视通科技有限公司 | Motor detection method and circuit for CCTV (closed circuit television) camera |
| CN105007005A (en) * | 2015-07-31 | 2015-10-28 | 付建文 | Brushless direct current motor speed adjusting system |
| CN113904595A (en) * | 2021-09-01 | 2022-01-07 | 九江七所精密机电科技有限公司 | Permanent magnet brushless direct current motor control system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20131025 |