CN202094833U - Digital controller of single-phase brushless motor - Google Patents
Digital controller of single-phase brushless motor Download PDFInfo
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- CN202094833U CN202094833U CN201120227245XU CN201120227245U CN202094833U CN 202094833 U CN202094833 U CN 202094833U CN 201120227245X U CN201120227245X U CN 201120227245XU CN 201120227245 U CN201120227245 U CN 201120227245U CN 202094833 U CN202094833 U CN 202094833U
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- electric machine
- chip microcomputer
- drive circuit
- bridge drive
- machine controller
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Abstract
The utility model discloses a digital controller of a single-phase brushless motor, which comprises a singlechip, an H-bridge drive circuit and a switch supply, wherein, the output end of a first timer of the singlechip is connected with the H-bridge drive circuit connected with the motor; the switch supply and the H-bridge drive circuit are connected with the singlechip; and the output end of a second timer of the singlechip is connected with the switch supply. The controller can intelligently control the single-phase brushless motor, and also solve the problems of a control circuit, such as high heating, great loss, shot service life, and strong magnetic radiation.
Description
Technical field
The utility model relates to a kind of controller, relates in particular to a kind of based on digital brushless single phase electric machine controller.
Background technology
It is low that brushless electric machine has a noise, no-spark, and the life-span is long, and moment of torsion is big, safeguards advantages such as few, and in industry, civilian grade has obtained using widely from many Motor Control Field.The brushless single phase motor is a kind of as brushless electric machine, and with respect to multi-phase brushless motor, it is simpler to have a drive circuit, and it is easier to control, the characteristics that cost is lower.And technology is simple on manufacturing, and low cost is fit to do all kinds of blower fans and uses very much.The most frequently used technical scheme of control brushless single phase motor is that devices at full hardware realizes at present, perhaps directly adopts special driving chip.
The devices at full hardware control circuit heating of employing special driving chip is high, loss is big, the life-span is short and electromagnetic radiation is strong.
The utility model content
The purpose of this utility model is, provides a kind of based on digital brushless single phase electric machine controller.It can realize the Based Intelligent Control to the brushless single phase motor, and can overcome the shortcoming that the control circuit heating is high, loss is big, the life-span is short, electromagnetic radiation is strong.
The technical solution of the utility model: a kind ofly be characterized in that based on digital brushless single phase electric machine controller it comprises single-chip microcomputer, H bridge drive circuit and Switching Power Supply; The output of the first timer of single-chip microcomputer links to each other with H bridge drive circuit (being used to produce the motor-driven waveform of band dead band control), and H bridge drive circuit connects motor; Switching Power Supply links to each other with single-chip microcomputer with H bridge drive circuit; The second timer output of single-chip microcomputer links to each other with Switching Power Supply, and second timer produces the output of PWM ripple control switching voltage, can regulate the busbar voltage size of exporting to motor by regulating the PWM duty ratio, reaches the purpose of electric machine speed regulation.。
Aforesaid the input of described second timer links to each other with Hall element based in the digital brushless single phase electric machine controller, and Hall element is located on the motor.Second timer is caught the hall signal of motor, is used for the surveying work of motor commutation and rotating speed.
Aforesaid based in the digital brushless single phase electric machine controller, be connected with current sampling circuit on the described H bridge drive circuit, current sampling circuit links to each other with the digital to analog converter of single-chip microcomputer, is used for detecting the electric current of electric motor loop, carries out the over-current detection effect.
Aforesaid described single-chip microcomputer is provided with the program download interface based in the digital brushless single phase electric machine controller, can download and upgrades the control routine of controller.
Aforesaid based in the digital brushless single phase electric machine controller, described H bridge drive circuit is an Electric Machine Control H bridge circuit of being made of standard the metal-oxide-semiconductor of 4 N raceway grooves; Wherein metal-oxide-semiconductor is the high temperature resistant MOS of ROHMRCD040N25 240V high pressure, inner integrated earial drainage diode; The chip for driving of driving N channel MOS is the IR2101 special integrated chip.Metal-oxide-semiconductor is selected the high temperature resistant MOS of ROHM RCD040N25 240V high pressure for use, and inner integrated earial drainage diode has guaranteed the long-term stable operation of power device.The chip for driving of driving N channel MOS is selected the IR2101 special integrated chip, is produced by American I R company, is specifically designed to driven MOS pipe and IGBT.When the H bridge of the full N raceway groove of control, bootstrapping suspension voltage can be provided, obtained on the circuit design simplifying greatly.
Aforesaid based in the digital brushless single phase electric machine controller, described single-chip microcomputer is STM8S103.
Compared with prior art, the utility model implements comparatively simple on hardware circuit, and the single-chip microcomputer low price, helps reducing product cost.The utility model sampled digital intelligent control technology, control performance is stable, has overcome the shortcoming that the heating of conventional hardware scheme is high, loss is big, the life-span is short and electromagnetic radiation is strong.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment.A kind of based on digital brushless single phase electric machine controller, as shown in Figure 1, it comprises single-chip microcomputer, H bridge drive circuit and Switching Power Supply; The output of the first timer of single-chip microcomputer links to each other with H bridge drive circuit (being used to produce the motor-driven waveform of band dead band control), and H bridge drive circuit connects motor; Switching Power Supply links to each other with single-chip microcomputer with H bridge drive circuit; The second timer output of single-chip microcomputer links to each other with Switching Power Supply, and second timer produces the output of PMM ripple control switching voltage, can regulate the busbar voltage size of exporting to motor by regulating the PMM duty ratio, reaches the purpose of electric machine speed regulation.。
Aforesaid the input of described second timer links to each other with Hall element based in the digital brushless single phase electric machine controller, and Hall element is located on the motor.Second timer is caught the hall signal of motor, is used for the surveying work of motor commutation and rotating speed.
Aforesaid based in the digital brushless single phase electric machine controller, be connected with current sampling circuit on the described H bridge drive circuit, current sampling circuit links to each other with the digital to analog converter of single-chip microcomputer, is used for detecting the electric current of electric motor loop, carries out the over-current detection effect.
Aforesaid described single-chip microcomputer is provided with the program download interface based in the digital brushless single phase electric machine controller, can download and upgrades the control routine of controller.
Aforesaid based in the digital brushless single phase electric machine controller, described H bridge drive circuit is an Electric Machine Control H bridge circuit of being made of standard the metal-oxide-semiconductor of 4 N raceway grooves; Wherein metal-oxide-semiconductor is the high temperature resistant MOS of ROHMRCD040N25 240V high pressure, inner integrated earial drainage diode; The chip for driving of driving N channel MOS is the IR2101 special integrated chip.Metal-oxide-semiconductor is selected the high temperature resistant MOS of ROHM RCD040N25 240V high pressure for use, and inner integrated earial drainage diode has guaranteed the long-term stable operation of power device.The chip for driving of driving N channel MOS is selected the IR2101 special integrated chip, is produced by American I R company, is specifically designed to driven MOS pipe and IGBT.When the H bridge of the full N raceway groove of control, bootstrapping suspension voltage can be provided, obtained on the circuit design simplifying greatly.
Aforesaid based in the digital brushless single phase electric machine controller, described single-chip microcomputer is STM8S103.
With the STM8S103 single-chip microcomputer is example, and as shown in Figure 2, timer TIM2 produces the output of PWM ripple control switching voltage.Timer TIM1 output port links to each other with the H bridge that metal-oxide-semiconductor is formed, and produces the motor-driven waveform of band dead band control.The ADC1 electric current in the electric motor loop of can sampling carries out the over-current detection effect.Timer TIM2 also catches the hall signal of motor simultaneously, is used for the surveying work of motor commutation and rotating speed.Can download and upgrade the control routine of controller by the program download interface.
Drive motors voltage is by the output of Switching Power Supply partial circuit, and the Switching Power Supply input voltage is 170V～265VAC, output two-way voltage behind rectifier transformer.One tunnel generation+15V voltage, output+5V supplies with single-chip microcomputer and Hall element power supply after 7805 voltage stabilizings.Another road produces maximum+82V voltage, supplies with the busbar voltage that MOS drives the H bridge, is used for drive motors.The timer TIM2 of single-chip microcomputer can produce the PWM ripple, is input to the control port of Switching Power Supply, can regulate the busbar voltage size of exporting to motor by regulating the PWM duty ratio, reaches the purpose of electric machine speed regulation.
The sampling resistor of in the loop of H bridge, having connected; be used to the current of electric of sampling; be input on 10 ADC1 sample port of single-chip microcomputer after the sampled voltage process RC low-pass filtering; by ADC1 load transfer sampled voltage; when current of electric excessive; single-chip microcomputer can be protected automatically when sending overcurrent, prevents that motor from causing that because of overload or stall electric current is excessive, causes hardware circuit and motor to damage.Guarantee the safety and stability of entire controller like this, prolonged useful life.
Its software work principle is:
The software control motor mainly is catching and commutation work motor Hall feedback signal.Hall signal is caught specially by timer TIM2 capture interrupt.When hall signal generation saltus step, timer TIM2 can capture the jumping limit of its rising edge and trailing edge, enters judgement and next step commutation action of carrying out the position in the interrupt service subroutine then.When catching two adjacent hopping edges, timer is also counted the middle time interval, is used to calculate current rotating speed of motor simultaneously.
Motor-driven commutation sequential is produced by timer TIM1, can produce the control waveform in the band dead band of Electric Machine Control special use by the register that timer TIM1 is set.Be input on the chip for driving IR2102 of metal-oxide-semiconductor by single-chip microcomputer timer output end mouth, again by the chip for driving conducting with close metal-oxide-semiconductor.
Detect the current rotating speed of motor at timer TIM2 after, the tachometer value that obtains in PID adjusting program according to rotating speed of target and the current revolution speed calculating error set, and the PWM duty ratio of regulating timer TIM2 output, and then the by-pass cock electric power output voltage, regulate the motor speed purpose thereby reach.
The over-current detection program is to be finished by ADC1, ADC1 is the analog to digital converter of 10 precision, can be with on the sampling resistor; aanalogvoltage converts digital signal to, compares with the overcurrent threshold value of setting in the program, if surpassed threshold value; program just enters guard mode immediately, closes the drive axle metal-oxide-semiconductor.After overcurrent took place, program can be restarted motor at regular intervals in good time.
Claims (6)
1. one kind based on digital brushless single phase electric machine controller, it is characterized in that it comprises single-chip microcomputer, H bridge drive circuit and Switching Power Supply; The output of the first timer of single-chip microcomputer links to each other with H bridge drive circuit, and H bridge drive circuit connects motor; Switching Power Supply links to each other with single-chip microcomputer with H bridge drive circuit; The second timer output of single-chip microcomputer links to each other with Switching Power Supply.
2. according to claim 1 based on digital brushless single phase electric machine controller, it is characterized in that: the input of described second timer links to each other with Hall element, and Hall element is located on the motor.
3. according to claim 1 based on digital brushless single phase electric machine controller, it is characterized in that: be connected with current sampling circuit on the described H bridge drive circuit, current sampling circuit links to each other with the digital to analog converter of single-chip microcomputer.
4. according to claim 1 based on digital brushless single phase electric machine controller, it is characterized in that: described single-chip microcomputer is provided with the program download interface.
5. according to claim 1 based on digital brushless single phase electric machine controller, it is characterized in that: described H bridge drive circuit is for being made of the Electric Machine Control H bridge circuit of standard the metal-oxide-semiconductor of 4 N raceway grooves; Wherein metal-oxide-semiconductor is the high temperature resistant MOS of ROHM RCD040N25 240V high pressure, inner integrated earial drainage diode; The chip for driving of driving N channel MOS is the IR2101 special integrated chip.
6. described based on digital brushless single phase electric machine controller according to the arbitrary claim of claim 1～5, it is characterized in that: described single-chip microcomputer is STM8S103.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120227245XU CN202094833U (en) | 2011-06-30 | 2011-06-30 | Digital controller of single-phase brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120227245XU CN202094833U (en) | 2011-06-30 | 2011-06-30 | Digital controller of single-phase brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202094833U true CN202094833U (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120227245XU Expired - Lifetime CN202094833U (en) | 2011-06-30 | 2011-06-30 | Digital controller of single-phase brushless motor |
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| CN (1) | CN202094833U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258978A (en) * | 2018-03-07 | 2018-07-06 | 深圳市沃特沃德股份有限公司 | Motor control assembly |
-
2011
- 2011-06-30 CN CN201120227245XU patent/CN202094833U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258978A (en) * | 2018-03-07 | 2018-07-06 | 深圳市沃特沃德股份有限公司 | Motor control assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LIERDA TECHNOLOGY GROUP CO., LTD. Free format text: FORMER NAME: LIERDA SCIENCE AND TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 310011 Gongshu District, Hangzhou Province, harmony Road, building A, room 1201, room, 18 Patentee after: Lierda Science & Technology Group Co., Ltd. Address before: Lilda science and Technology Building No. 425 Hangzhou City, Zhejiang province Gongshu District Dengyun road 310011 15 Floor Patentee before: Lierda Science and Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |