CN202395718U - Single channel speed detection driver for asynchronous machine - Google Patents
Single channel speed detection driver for asynchronous machine Download PDFInfo
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- CN202395718U CN202395718U CN2011205613278U CN201120561327U CN202395718U CN 202395718 U CN202395718 U CN 202395718U CN 2011205613278 U CN2011205613278 U CN 2011205613278U CN 201120561327 U CN201120561327 U CN 201120561327U CN 202395718 U CN202395718 U CN 202395718U
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- Control Of Electric Motors In General (AREA)
Abstract
The utility model discloses a single channel speed detection driver for an asynchronous machine, comprising a digital signal processor, a logic signal processor, a signal processing circuit, a single channel speed detection processing circuit, an analog signal processing circuit, a communication circuit, a control power circuit, a drive amplification circuit and an inverter bridge circuit, wherein the output ends of the logic signal processor, the control power circuit, the single channel speed detection processing circuit, the analog signal processing circuit and the a communication circuit are respectively connected with the input end of the digital signal processor; the output end of the digital signal processor is connected with the input end of the drive amplification circuit; the output end of the drive amplification circuit is connected with the input end of the inverter bridge; and the output end of the signal processing circuit is connected with the input end of the logic signal processor. The single channel speed detection driver for an asynchronous machine uses a single channel speed sensor, thus being able to determine whether an electrical machine needs to rotate inversely and avoiding the situation that the electrical machine is applied with reversing field during the rotation process.
Description
Technical field
The utility model relates to a kind of asynchronous machine speed and detects driver, and particularly a kind of asynchronous machine single channel speed detects driver.
Background technology
At present, in the ac three-phase asynchronous motor speed regulating control, employing be the circular magnetic field that on the stator of motor, adds a rotation, drive the motor rotation, through regulating the rotary speed of rotating magnetic field, thereby realize the speed regulating control of motor.When the speed of rotating magnetic field was higher than rotor speed, motor was in traction working condition in the speed regulation process, and when the speed of rotating magnetic field was lower than rotor speed, motor was in damped condition; The stator field direction of rotation that the speed regulation process requirement adds is consistent with the motor speed direction, must avoid in the motor rotary course, adds a rotating magnetic field opposite with motor steering when not static.Therefore the measurement of motor direction of rotation is extremely important.Usually the method that adopts is to measure with twin-channel velocity transducer of 90 ° of phase phasic differences, judges the direction of rotation of motor through the phase relation that compares two channel pulses.This method has increased the cost of design, and is also higher to the requirement of transducer simultaneously, especially the phase place of two pulse signals and waveform.
Summary of the invention
In order to solve the problems of the technologies described above, it is a kind of simple in structure that the utility model provides, and can pass through single pass velocity transducer, detects the rotary speed of motor, and the asynchronous machine single channel speed of the given direction of motor rotation of real time record detects driver.
The technical scheme that the utility model solves above-mentioned technical problem is: comprise that digital signal processor, CPLD logic signal processor, I/O signal processing circuit, single channel speed detect treatment circuit, analog signal processing circuit, communicating circuit, control power circuit, drive amplifying circuit and IGBT inverter bridge circuit; The output that described CPLD logic signal processor, control power circuit, single channel speed detect treatment circuit, analog signal processing circuit and communicating circuit is connected with the input of digital signal processor respectively; The output of said digital signal processor is connected with the input that drives amplifying circuit; The output that drives amplifying circuit is connected with the input of IGBT inverter bridge circuit, and the output of described I/O signal processing circuit is connected with the input of CPLD logic signal processor.
Further, also comprise the keyboard debugging apparatus, described keyboard debugging apparatus is connected with communicating circuit.
Owing to adopt technique scheme; The beneficial effect of the utility model is: adopts single pass velocity transducer, detected the rotary speed of motor, and the given direction of motor rotation of real time record; Through the current given motor direction of rotation and the motor steering of record are compared; Thereby need to judge whether the motor counter-rotating, and make corresponding actions, thereby the situation of having avoided motor in rotary course, directly to add the opposing magnetic field takes place by controller.
Description of drawings
Fig. 1 is the system block diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
As shown in Figure 1; A kind of asynchronous machine single channel speed detects driver; Comprise that digital signal processor, CPLD logic signal processor, I/O signal processing circuit, control power circuit, single channel speed detect treatment circuit, analog signal processing circuit, communicating circuit, keyboard debugging apparatus, drive amplifying circuit and IGBT inverter bridge circuit; The output that described CPLD logic signal processor, single channel speed detect treatment circuit, analog signal processing circuit and communicating circuit is connected with the input of digital signal processor respectively; The output of said digital signal processor is connected with the input that drives amplifying circuit; The output that drives amplifying circuit is connected with the input of IGBT inverter bridge circuit; The output of described I/O signal processing circuit is connected with the input of CPLD logic signal processor, and the keyboard debugging apparatus is connected with communicating circuit, and the output of described control power circuit is connected with the input of digital signal processor.
The operation principle of the utility model is: digital signal processor is accomplished the calculation process of digital signal to all collections, analog signal, rate signal, and output drive signal is given and driven amplifying circuit; The CPLD logic signal processor is connected with digital signal processor with the I/O signal processing circuit, is responsible for the digital command of input is carried out being transferred to digital signal processor after the logical operation; Single channel speed detects and sends to digital signal processor after the treatment circuit completion is handled the tachometer pulse signal of the single channel motor speed sensor of outside; Analog signal processing circuit accomplishes that collection and the processing of current of electric are redispatched and be used for computing to digital signal processor mutually to direct current, U phase current of electric and V; Communicating circuit is accomplished the transmission function served as bridge between digital signal processor and keyboard debugging apparatus; The keyboard debugging apparatus is accomplished the setting of operational factor and the online demonstration of running status; The driving amplifying circuit is accomplished the pulse signal that digital signal processor is sent and is carried out sending IGBT inverter bridge circuit to after shaping is amplified, and realizes drive controlling; The control power circuit accomplish direct voltage with input convert to control circuit needed ± 15V, 5V voltage.
Claims (2)
1. an asynchronous machine single channel speed detects driver; It is characterized in that: comprise that digital signal processor, CPLD logic signal processor, I/O signal processing circuit, single channel speed detect treatment circuit, analog signal processing circuit, communicating circuit, control power circuit, drive amplifying circuit and IGBT inverter bridge circuit; The output that described CPLD logic signal processor, control power circuit, single channel speed detect treatment circuit, analog signal processing circuit and communicating circuit is connected with the input of digital signal processor respectively; The output of said digital signal processor is connected with the input that drives amplifying circuit; The output that drives amplifying circuit is connected with the input of IGBT inverter bridge circuit, and the output of described I/O signal processing circuit is connected with the input of CPLD logic signal processor.
2. asynchronous machine single channel speed according to claim 1 detects driver, and it is characterized in that: also comprise the keyboard debugging apparatus, described keyboard debugging apparatus is connected with communicating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205613278U CN202395718U (en) | 2011-12-29 | 2011-12-29 | Single channel speed detection driver for asynchronous machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205613278U CN202395718U (en) | 2011-12-29 | 2011-12-29 | Single channel speed detection driver for asynchronous machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202395718U true CN202395718U (en) | 2012-08-22 |
Family
ID=46670617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205613278U Expired - Fee Related CN202395718U (en) | 2011-12-29 | 2011-12-29 | Single channel speed detection driver for asynchronous machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202395718U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833817A (en) * | 2015-05-06 | 2015-08-12 | 成都诚邦动力测试仪器有限公司 | Motor speed measuring system based on linear drive |
| CN104897920A (en) * | 2015-05-06 | 2015-09-09 | 成都诚邦动力测试仪器有限公司 | Motor rotating speed testing system based on double field-effect transistor oscillating circuit |
-
2011
- 2011-12-29 CN CN2011205613278U patent/CN202395718U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833817A (en) * | 2015-05-06 | 2015-08-12 | 成都诚邦动力测试仪器有限公司 | Motor speed measuring system based on linear drive |
| CN104897920A (en) * | 2015-05-06 | 2015-09-09 | 成都诚邦动力测试仪器有限公司 | Motor rotating speed testing system based on double field-effect transistor oscillating circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20120822 Termination date: 20141229 |
|
| EXPY | Termination of patent right or utility model |