CN204334400U - A kind of signal sampling device controlled for motor in electric automobile - Google Patents
A kind of signal sampling device controlled for motor in electric automobile Download PDFInfo
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- CN204334400U CN204334400U CN201520052864.8U CN201520052864U CN204334400U CN 204334400 U CN204334400 U CN 204334400U CN 201520052864 U CN201520052864 U CN 201520052864U CN 204334400 U CN204334400 U CN 204334400U
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Abstract
The utility model relates to a kind of signal sampling device controlled for motor in electric automobile, comprise multichannel collecting unit, signal processing unit, communication unit and power supply unit, be characterized in: described multichannel collecting unit input is connected with the output of fully differential drive circuit, described fully differential drive circuit signal input part is used for the feedback signal collection terminal of connecting electric automobile motor; Described multichannel collecting unit output is connected with described signal processing unit, and for the process to feedback signal, described signal processing unit is connected with described communication unit, and described communication unit output is used for the electric machine controller of connecting electric automobile.The utility model gathers the mixed signal of measured signal and random disturbances in motor environment, by the digital filtering algorithm in auto-disturbance rejection technology, effectively removes random interfering signal, obtains and feeds back the signal of telecommunication fast and accurately, improve the control performance of electric machine controller.The utility model integrated level is high, compact conformation, applied widely.
Description
Technical field
The utility model belongs to a kind of signal of telecommunication device for picking, particularly relates to a kind of signal sampling device controlled for motor in electric automobile.
Background technology
For motor control system of electric automobile, obtaining the feedback informations such as the voltage of three-phase, electric current and speed in real time is accurately that can motor the key of stable operation and accurate speed governing, or even the key of Dynamic Performance of Electric Vehicle quality.At present, for the situation that control system circumstance complication when such as carrying out vector control to permagnetic synchronous motor is changeable, usual employing is to the compensation on the hardware filtering of input signal or software, this method of sampling well can not suppress the random noise in electric circumstance, reaches sampling and the control effects of expection.
Chinese patent Granted publication is: CN203722530U, the day for announcing is: on July 16th, 2014, utility model patent disclosed one convertible frequency air-conditioner, air conditioner compressed machine controller and current sampling circuit thereof, comprised the current sampling circuit of differential filtering module, difference amplifier module and filtration module; Described differential filtering module comprises the first resistance R1, the first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3 and the second resistance R2; Described circuit sampling circuit comprises sampling resistor; Described difference amplifier module comprises the 3rd resistance R3, operational amplifier and the 4th resistance R4.This device is solve the problem that the frequency converting air-conditioner compressor adopting permagnetic synchronous motor to drive carries out vector control sample precision, but its filtering method is simple, and do not consider the interference that the electric circumstance of around produces, sample effect is undesirable.
Utility model content
The purpose of this utility model is sample in controlling for existing the permagnetic synchronous motor defect of rapidity and accuracy and deficiency, provides the signal sampling device controlled for motor in electric automobile of a kind of blocking, compact conformation, good wave filtering effect.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of signal sampling device controlled for motor in electric automobile, comprise multichannel collecting unit, signal processing unit, communication unit and power supply unit, be characterized in: described multichannel collecting unit input is connected with the output of fully differential drive circuit, described fully differential drive circuit signal input part is used for the feedback signal collection terminal of connecting electric automobile motor; Described multichannel collecting unit output is connected with described signal processing unit, and for the process to feedback signal, described signal processing unit is connected with described communication unit, and described communication unit output is used for the electric machine controller of connecting electric automobile.
Described fully differential drive circuit comprises RC low-pass filter circuit, Differential OPAMP circuit; Described signal processing unit comprises memory expansion circuit, clock-reset circuit and DSP power circuit.
Described communication unit comprises CAN and UART, and described CAN realizes with electric vehicle motor controller, and described UART and host computer realize communicating.
Described signal sampling device is installed in control system of electric automobile, can be the independent unit in control system of electric automobile, can also embed in control system of electric automobile.
Software of the present utility model adopts Nonlinear Tracking Differentiator (TD) algorithm in Auto Disturbances Rejection Control Technique, measured signals different for frequency is extracted from the mixed signal of random interfering signal and measured signal, and output digit signals is to electric machine controller, realize the quick and precisely sampling of the multiple signal of voltage, electric current etc. in Control of Electric Vehicles.
The beneficial effects of the utility model are:
1, the utility model gathers the mixed signal of measured signal and random disturbances in motor environment, by the digital filtering algorithm in auto-disturbance rejection technology, effective removal random interfering signal, obtains and feeds back the signal of telecommunication fast and accurately, improve the control performance of electric machine controller.
2, high, the compact conformation of the utility model integrated level, both as separate unit, also can be able to embed in electric machine controller, applied widely.
Accompanying drawing explanation
Fig. 1 is system configuration schematic diagram of the present utility model.
Fig. 2 is the comparison diagram of the utility model input signal and output signal.
Embodiment
In order to make the purpose of this utility model, technical scheme and a little more clear, below it is described in further detail:
See Fig. 1 and Fig. 2, a kind of signal sampling device controlled for motor in electric automobile of the present utility model, comprises multichannel collecting unit 2, signal processing unit 3, communication unit 7, power supply unit 6 and fully differential drive circuit.Described multichannel collecting unit front end is connected with described fully differential drive circuit, and rear end is connected with signal processing unit, and described fully differential drive circuit comprises RC low-pass filter circuit, Differential OPAMP circuit.
Described signal processing unit comprises memory expansion circuit, clock-reset circuit, and feedback digital signal is exported to electric machine controller and the host computer of electric automobile by signal processing unit by described communication unit.Described communication unit comprises CAN and UART, and CAN communication realizes transmitting digital signal with electric vehicle motor controller, and UART communicates with host computer.
Described power supply unit 6 comprises isolated form DC-DC unit.
Described fully differential drive circuit analog input signal is connected to permagnetic synchronous motor I/V feedback collection end, and described signal processing unit digital output signal is connected to electric machine controller.
In motor control system of electric automobile, except the High-frequency Interference caused due to motor vector control, also have the disturbance (as transducer and other electronic devices) because measuring system inside causes, and the interference that environmental factor causes (as measuring tempeature etc.).For High-frequency Interference, the method for narrow-band filtering can be adopted to remove, then need a kind of filtering method of better performances for having probabilistic random noise.
Operation principle of the present utility model is as follows: the mixed signal being obtained measured signal and interference signal by front end signal conditioning and collecting unit, analog quantity is converted into digital quantity, again according to auto-disturbance rejection technology, extract the digital quantity of measured signal, directly output to the feedback detecting unit of electric machine controller.
Signal condition and collecting unit are installed on the I/V feedback place of motor control system of electric automobile by the utility model, an independent processing unit does digital processing to measured signal, software adopt the differential in Auto Disturbances Rejection Control Technique follow the tracks of (TD) algorithm, measured signals different for frequency is extracted from the mixed signal of random interfering signal and measured signal, and output digit signals is to electric machine controller, realize the quick and precisely sampling of the multiple signal of voltage, electric current etc. in Control of Electric Vehicles.
The content be not described in detail in this specification belongs to the known prior art of professional and technical personnel in the field.
Claims (4)
1. the signal sampling device controlled for motor in electric automobile, comprise multichannel collecting unit, signal processing unit, communication unit and power supply unit, it is characterized in that: described multichannel collecting unit input is connected with the output of fully differential drive circuit, described fully differential drive circuit signal input part is used for the feedback signal collection terminal of connecting electric automobile motor; Described multichannel collecting unit output is connected with described signal processing unit, and for the process to feedback signal, described signal processing unit is connected with described communication unit, and described communication unit output is used for the electric machine controller of connecting electric automobile.
2., as claimed in claim 1 for the signal sampling device that motor in electric automobile controls, it is characterized in that: described fully differential drive circuit comprises RC low-pass filter circuit, Differential OPAMP circuit; Described signal processing unit comprises memory expansion circuit and clock-reset circuit.
3. as claimed in claim 1 for the signal sampling device of motor in electric automobile control, it is characterized in that: described communication unit comprises CAN and UART, described CAN realizes with electric vehicle motor controller, and described UART and host computer realize communicating.
4. as claimed in claim 1 for the signal sampling device of motor in electric automobile control, it is characterized in that: described signal sampling device is installed in control system of electric automobile, can be the independent unit in control system of electric automobile, can also embed in control system of electric automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520052864.8U CN204334400U (en) | 2015-01-26 | 2015-01-26 | A kind of signal sampling device controlled for motor in electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520052864.8U CN204334400U (en) | 2015-01-26 | 2015-01-26 | A kind of signal sampling device controlled for motor in electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204334400U true CN204334400U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520052864.8U Expired - Fee Related CN204334400U (en) | 2015-01-26 | 2015-01-26 | A kind of signal sampling device controlled for motor in electric automobile |
Country Status (1)
| Country | Link |
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| CN (1) | CN204334400U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017107645A1 (en) * | 2015-12-25 | 2017-06-29 | 北京新能源汽车股份有限公司 | Phase current signal sampling method and apparatus, electric motor controller and electric vehicle |
| CN114596833A (en) * | 2022-03-13 | 2022-06-07 | 哈尔滨理工大学 | Base station fan noise multi-point synchronous acquisition circuit, key unit and noise suppression method |
-
2015
- 2015-01-26 CN CN201520052864.8U patent/CN204334400U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017107645A1 (en) * | 2015-12-25 | 2017-06-29 | 北京新能源汽车股份有限公司 | Phase current signal sampling method and apparatus, electric motor controller and electric vehicle |
| CN114596833A (en) * | 2022-03-13 | 2022-06-07 | 哈尔滨理工大学 | Base station fan noise multi-point synchronous acquisition circuit, key unit and noise suppression method |
| CN114596833B (en) * | 2022-03-13 | 2024-06-11 | 哈尔滨理工大学 | Base station fan noise multipoint synchronous acquisition circuit, key unit and noise suppression method |
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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: 20150513 Termination date: 20160126 |
|
| EXPY | Termination of patent right or utility model |