CN205280114U - Electric automobile electrical resolver decoding circuit output signal accuracy testing system - Google Patents
Electric automobile electrical resolver decoding circuit output signal accuracy testing system Download PDFInfo
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- CN205280114U CN205280114U CN201521109603.1U CN201521109603U CN205280114U CN 205280114 U CN205280114 U CN 205280114U CN 201521109603 U CN201521109603 U CN 201521109603U CN 205280114 U CN205280114 U CN 205280114U
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Abstract
The utility model discloses an electric automobile electrical resolver decoding circuit output signal accuracy testing system, the electrical resolver of this system detects motor stator and rotor relative position relation and changes voltage signal into and exports the decoding circuit to, and sawtooth waveform's voltage signal is decoded into voltage signal to the decoding circuit, the voltage signal of decoding circuit output is gathered and convert data signal to numeral acquisition and storage module, is the data array and send digital quantitative analysis module to with the data signal storage, digit quantitative analysis pair of module data array carries out differential processing, amplitude limiting filtering and quantitative analysis, reachs decoding circuit output voltage precision value to convey the precision value to the host computer, the host computer with the ratio of precision of precision value and decoding circuit to show the comparative result. This system to decoding circuit output signal gather, the analysis, show after handling by the host computer and improve motor control accuracy by precision analysis result, guarantee the security and the stability of electric automobile operation.
Description
Technical field
This utility model relates to a kind of electric automobile rotary transformer decoding circuit output signal accuracy detection system.
Background technology
Motor and drive system thereof, control system are the key components and partss of electric automobile, and it is the heart of electric automobile, control system to motor accurately control most important. Rotary transformer is a kind of electromagnetic sensor, for measuring rotating shaft angular travel and the angular velocity of rotating object, in electric automobile, the output signal of rotary transformer feeds back to control system after being processed by decoding circuit, wherein the output signal accuracy of rotary transformer decoding circuit directly affects the quality that motor speed controls, thus affecting the safety and stability that electric automobile runs. Not yet there is the detection system for electric automobile rotary transformer decoding circuit output signal accuracy at present.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of electric automobile rotary transformer decoding circuit output signal accuracy detection system, native system is by gathering the output signal of rotary transformer decoding circuit, output signal is carried out stored digital and numeral quantitative analysis, and display precision is analyzed result, is carried out accuracy class judge after host computer processes, thus improving motor in electric automobile control accuracy, it is ensured that the safety and stability that electric automobile runs.
For solving above-mentioned technical problem, this utility model electric automobile rotary transformer decoding circuit output signal accuracy detection system includes rotary transformer and decoding circuit, described rotary transformer detects motor stator and rotor relative position relation and changes into voltage signal output, the voltage signal of output becomes SIN function or cosine function relationship with the relative position of rotor, and the voltage signal of output is transferred to described decoding circuit, described decoding circuit receives the voltage signal of rotary transformer output, and voltage signal is decoded into the voltage signal of zig-zag, this detection system also includes digital collection memory module, digital quantization analysis module and host computer, described digital collection memory module input connects the input of the outfan of described decoding circuit, the outfan described digital quantization analysis module of connection, and the outfan of described digital quantization analysis module connects the input of described host computer.
Further, described digital collection memory module gathers the voltage signal of decoding circuit output and converts digital signal to, digital signal is stored as array of data and sends digital quantization analysis module to; Further, described digital quantization analysis module receives the array of data of described digital collection memory module output, array of data is carried out differential process, differential result carries out limit filtration, value after limit filtration adopts equal difference method to carry out quantitative analysis, draw decoding circuit output voltage signal accuracy value, and accuracy value is sent to host computer;
Further, described host computer receives the accuracy value of described digital quantization analysis module output and shows, by the precision comparison of accuracy value Yu decoding circuit, if the difference compared is within the required precision scope of decoding circuit, it is qualified that described host computer shows; If the difference compared is outside the required precision scope of decoding circuit, described host computer shows defective, and shows the difference compared.
Further, described digital collection memory module includes analog signal conditioner circuit, analogue signal acquisition circuit and single-chip microcomputer, the input of described analog signal conditioner circuit connects described decoding circuit outfan, the input of described analogue signal acquisition circuit connects the outfan of described analog signal conditioner circuit, the input of described single-chip microcomputer connects the outfan of described analogue signal acquisition circuit, described single-chip microcomputer includes A/D convertor circuit, digital buffer and flash storage, the output signal of described analogue signal acquisition circuit is successively through described A/D convertor circuit, described flash storage it is stored in after digital buffer.
Further, described digital quantization analysis module includes the array of data Acquisition Circuit, peaker, limit filtration circuit, add circuit, division circuit, subtraction circuit and the CAN communication circuit that are sequentially connected with, the input of described array of data Acquisition Circuit connects the outfan of described digital collection memory module, and the outfan of described CAN communication circuit connects described host computer.
Technique scheme is have employed owing to this utility model electric automobile rotary transformer decoding circuit output signal accuracy detects system, namely the rotary transformer of native system detects motor stator and rotor relative position relation and changes into voltage signal output to decoding circuit, and voltage signal is decoded into the voltage signal of zig-zag by decoding circuit; Digital collection memory module gathers the voltage signal of decoding circuit output and converts digital signal to, digital signal is stored as array of data and sends digital quantization analysis module to; Array of data is carried out differential process, limit filtration and quantitative analysis by digital quantization analysis module, draws decoding circuit output voltage signal accuracy value, and accuracy value is sent to host computer; Host computer is by the precision comparison of accuracy value Yu decoding circuit, and shows comparative result. Native system is by gathering the output signal of rotary transformer decoding circuit, output signal is carried out stored digital and numeral quantitative analysis, and display precision is analyzed result, is carried out accuracy class judge after host computer processes, thus improving motor in electric automobile control accuracy, it is ensured that the safety and stability that electric automobile runs.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the utility model is described in further detail:
Fig. 1 is the theory diagram of this utility model electric automobile rotary transformer decoding circuit output signal accuracy detection system;
Fig. 2 is the theory diagram of digital collection memory module in native system;
Fig. 3 is the theory diagram of digital quantization analysis module in native system.
Detailed description of the invention
Embodiment is as shown in Figure 1, this utility model electric automobile rotary transformer decoding circuit output signal accuracy detection system includes rotary transformer 1 and decoding circuit 2, described rotary transformer 1 detects motor stator and rotor relative position relation and changes into voltage signal output, the voltage signal of output becomes SIN function or cosine function relationship with the relative position of rotor, and the voltage signal of output is transferred to described decoding circuit 2, described decoding circuit 2 receives the voltage signal of rotary transformer 1 output, and voltage signal is decoded into the voltage signal of zig-zag, this detection system also includes digital collection memory module 3, digital quantization analysis module 4 and host computer 5, described digital collection memory module 3 input connects the input of the outfan of described decoding circuit 2, the outfan described digital quantization analysis module 4 of connection, and the outfan of described digital quantization analysis module 4 connects the input of described host computer 5.
Preferably, described digital collection memory module 3 gathers the voltage signal of decoding circuit 2 output and converts digital signal to, digital signal is stored as array of data and sends digital quantization analysis module 4 to;
Preferably, described digital quantization analysis module 4 receives the array of data of described digital collection memory module 3 output, array of data is carried out differential process, differential result carries out limit filtration, value after limit filtration adopts equal difference method to carry out quantitative analysis, draw decoding circuit 2 output voltage signal accuracy value, and accuracy value is sent to host computer 5;
Preferably, described host computer 5 receives the accuracy value of described digital quantization analysis module 4 output and shows, by the precision comparison of accuracy value Yu decoding circuit 2, if the difference compared is within the required precision scope of decoding circuit 2, it is qualified that described host computer 5 shows; If the difference compared is outside the required precision scope of decoding circuit 2, described host computer 5 shows defective, and shows the difference compared.
As shown in Figure 2, preferably, described digital collection memory module includes analog signal conditioner circuit 31, analogue signal acquisition circuit 32 and single-chip microcomputer 33, the input of described analog signal conditioner circuit 31 connects described decoding circuit outfan, the input of described analogue signal acquisition circuit 32 connects the outfan of described analog signal conditioner circuit 31, the input of described single-chip microcomputer 33 connects the outfan of described analogue signal acquisition circuit 32, described single-chip microcomputer 33 includes A/D convertor circuit 34, digital buffer 35 and flash storage 36, the output signal of described analogue signal acquisition circuit 32 is successively through described A/D convertor circuit 34, described flash storage 36 it is stored in after digital buffer 35. the analog voltage signal of decoding circuit is nursed one's health and is gathered by analog signal conditioner circuit and analogue signal acquisition circuit, it is then transmit to A/D convertor circuit and voltage signal is changed into the digital signal of 12bit, digital signal is stored in numeral buffer area, and the data of numeral buffer area are sent to flash storage.
As shown in Figure 3, preferably, described digital quantization analysis module includes the array of data Acquisition Circuit 41, peaker 42, limit filtration circuit 43, add circuit 44, division circuit 45, subtraction circuit 46 and the CAN communication circuit 47 that are sequentially connected with, the input of described array of data Acquisition Circuit 41 connects the outfan of described digital collection memory module 3, and the outfan of described CAN communication circuit 47 connects described host computer 5. The array of data that digital quantization analysis module realizes gathering carries out quantitative analysis, obtains the actual output accuracy of decoding circuit and by CAN communication circuit transmission to host computer.
Native system is carried out precision judge by the voltage signal that decoding circuit is exported and is shown, make the quality of decoding circuit hardware design technique personnel energy intuitive judgment decoding circuit design, so that decoding circuit design meets required precision, contribute to the control to motor in electric automobile, thus improving motor in electric automobile control accuracy, it is ensured that the safety and stability that electric automobile runs.
Claims (6)
1. an electric automobile rotary transformer decoding circuit output signal accuracy detection system, including rotary transformer and decoding circuit, described rotary transformer detects motor stator and rotor relative position relation and changes into voltage signal output, the voltage signal of output becomes SIN function or cosine function relationship with the relative position of rotor, and the voltage signal of output is transferred to described decoding circuit, described decoding circuit receives the voltage signal of rotary transformer output, and voltage signal is decoded into the voltage signal of zig-zag; It is characterized in that: this detection system also includes digital collection memory module, digital quantization analysis module and host computer, described digital collection memory module input connects the input of the outfan of described decoding circuit, the outfan described digital quantization analysis module of connection, and the outfan of described digital quantization analysis module connects the input of described host computer.
2. electric automobile rotary transformer decoding circuit output signal accuracy according to claim 1 detection system, it is characterized in that: described digital collection memory module gathers the voltage signal of decoding circuit output and converts digital signal to, digital signal is stored as array of data and sends digital quantization analysis module to.
3. electric automobile rotary transformer decoding circuit output signal accuracy according to claim 2 detection system, it is characterized in that: described digital quantization analysis module receives the array of data of described digital collection memory module output, array of data is carried out differential process, differential result carries out limit filtration, value after limit filtration adopts equal difference method to carry out quantitative analysis, draw decoding circuit output voltage signal accuracy value, and accuracy value is sent to host computer.
4. electric automobile rotary transformer decoding circuit output signal accuracy according to claim 3 detection system, it is characterized in that: described host computer receives the accuracy value of described digital quantization analysis module output and shows, precision comparison by accuracy value Yu decoding circuit, if the difference compared is within the required precision scope of decoding circuit, it is qualified that described host computer shows; If the difference compared is outside the required precision scope of decoding circuit, described host computer shows defective, and shows the difference compared.
5. the electric automobile rotary transformer decoding circuit output signal accuracy detection system according to any one of Claims 1-4, it is characterized in that: described digital collection memory module includes analog signal conditioner circuit, analogue signal acquisition circuit and single-chip microcomputer, the input of described analog signal conditioner circuit connects described decoding circuit outfan, the input of described analogue signal acquisition circuit connects the outfan of described analog signal conditioner circuit, the input of described single-chip microcomputer connects the outfan of described analogue signal acquisition circuit, described single-chip microcomputer includes A/D convertor circuit, digital buffer and flash storage, the output signal of described analogue signal acquisition circuit is successively through described A/D convertor circuit, described flash storage it is stored in after digital buffer.
6. the electric automobile rotary transformer decoding circuit output signal accuracy detection system according to any one of Claims 1-4, it is characterized in that: described digital quantization analysis module includes the array of data Acquisition Circuit, peaker, limit filtration circuit, add circuit, division circuit, subtraction circuit and the CAN communication circuit that are sequentially connected with, the input of described array of data Acquisition Circuit connects the outfan of described digital collection memory module, and the outfan of described CAN communication circuit connects described host computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521109603.1U CN205280114U (en) | 2015-12-29 | 2015-12-29 | Electric automobile electrical resolver decoding circuit output signal accuracy testing system |
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| CN201521109603.1U CN205280114U (en) | 2015-12-29 | 2015-12-29 | Electric automobile electrical resolver decoding circuit output signal accuracy testing system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478247A (en) * | 2017-07-31 | 2017-12-15 | 浙江天拓电气有限公司 | A kind of rotary transformer high accuracy resolving system |
| CN108827350A (en) * | 2018-07-03 | 2018-11-16 | 中国铁建重工集团有限公司 | A kind of CAN bus based more rotary transformer decoding apparatus |
| CN110133392A (en) * | 2018-02-09 | 2019-08-16 | 上海蔚兰动力科技有限公司 | Test method and its associated test system |
| CN112003479A (en) * | 2020-09-01 | 2020-11-27 | 中车青岛四方车辆研究所有限公司 | Digital quantity acquisition circuit and acquisition method |
-
2015
- 2015-12-29 CN CN201521109603.1U patent/CN205280114U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478247A (en) * | 2017-07-31 | 2017-12-15 | 浙江天拓电气有限公司 | A kind of rotary transformer high accuracy resolving system |
| CN107478247B (en) * | 2017-07-31 | 2019-07-23 | 浙江天拓电气有限公司 | A kind of rotary transformer high-precision resolving system |
| CN110133392A (en) * | 2018-02-09 | 2019-08-16 | 上海蔚兰动力科技有限公司 | Test method and its associated test system |
| CN108827350A (en) * | 2018-07-03 | 2018-11-16 | 中国铁建重工集团有限公司 | A kind of CAN bus based more rotary transformer decoding apparatus |
| CN112003479A (en) * | 2020-09-01 | 2020-11-27 | 中车青岛四方车辆研究所有限公司 | Digital quantity acquisition circuit and acquisition method |
| CN112003479B (en) * | 2020-09-01 | 2021-07-30 | 中车青岛四方车辆研究所有限公司 | Digital quantity acquisition circuit and acquisition method |
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