CN104166010A - Visualization-based rotation speed interruption type detection system and method of PMSM - Google Patents
Visualization-based rotation speed interruption type detection system and method of PMSM Download PDFInfo
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Abstract
Disclosed is a visualization-based rotation speed interruption type detection system and method of a PMSM. The system is characterized in that a rotation speed sensor is arranged on a rotor of the PMSM and is connected with the first input pin of a DSP-based data acquisition system provided with an SCI module, the DSP-based data acquisition system is also connected with a host computer through an RS232 interface, the host computer is provided with a LabVIEW-based rotor rotation speed detection module, and the host computer also comprises a VISA module. Through combination with the method, the system provided by the invention can effectively avoid the defect of low work efficiency caused by too high occupancy of a processor of the DSP-based data acquisition system of the rotation speed detection system of the PMSM in the prior art.
Description
Technical field
The invention belongs to the rotating speed technical field of permagnetic synchronous motor, be specifically related to a kind of rotating speed interrupt detection system and method thereof based on visual permagnetic synchronous motor.
Background technology
Permagnetic synchronous motor is a kind of rotary electro-dynamic machine.It has been equipped with traditional threephase stator of similar induction motor, and rotor has been used permanent magnet.From this view point, permagnetic synchronous motor and induction motor are basic identical, and only the rotor field of permagnetic synchronous motor is produced by permanent magnet.Use permanent magnet can produce powerful air-gap flux, so just can improve the rotating speed of magneto.
In the detection of the rotating speed for permagnetic synchronous motor, conventionally there will be the processor for the DSP data acquisition system (DAS) of the detection system of the rotating speed of permagnetic synchronous motor occupy too high problem and cause work efficiency low.
Summary of the invention
Object of the present invention provides a kind of rotating speed interrupt detection system and method thereof based on visual permagnetic synchronous motor, be included on the rotor of permagnetic synchronous motor and be provided with speed probe, described speed probe is connected with the first input pin of the data acquisition system (DAS) based on DSP with SCI module, the described data acquisition system (DAS) based on DSP is also connected with host computer by RS232 interface, described host computer, with the rotating speed detection module of the rotor based on LabVIEW, also includes VISA module in described host computer.And can effectively avoid appearance of the prior art to occupy too high problem and cause the defect that work efficiency is low for the processor of the DSP data acquisition system (DAS) of the detection system of the rotating speed of permagnetic synchronous motor in conjunction with its method.
In order to overcome deficiency of the prior art, the invention provides a kind of rotating speed interrupt detection system based on visual permagnetic synchronous motor and the solution of method thereof, specific as follows:
A kind of rotating speed interrupt detection system based on visual permagnetic synchronous motor, be included on the rotor of permagnetic synchronous motor and be provided with speed probe 1, described speed probe 1 is connected with the first input pin 5 of the data acquisition system (DAS) based on DSP 4 with SCI module, the described data acquisition system (DAS) based on DSP 4 is also connected with host computer 9 by RS232 interface 8, described host computer 9, with the rotating speed detection module 10 of the rotor based on LabVIEW, also includes VISA module in described host computer 9.
The rotating speed detection module 10 of the described rotor based on LabVIEW includes human-computer interaction interface, described human-computer interaction interface comprises operation interface part and display interface part, and described operation interface is partly for just sending instruction through 10 pairs of host computers of rotating speed detection module 9 of the rotor based on LabVIEW after the carrying out operation by operation interface; Described display interface is partly divided into waveform display section and instrument display section, and described waveform display section can detect the whole change procedure of the rotary speed data of the rotor of selecting scope interior permanent-magnet synchronous motor; The data of the rotating speed of the rotor that shows permagnetic synchronous motor can be stablized in described instrument display section.
Described waveform display section is by the amplitude-time curve of the rotating speed of the rotor of waveform display window demonstration permagnetic synchronous motor, described instrument display section includes a circular-arc scale zone, a described circular-arc scale zone is used for representing the tachometer value scope of the rotor of permagnetic synchronous motor, the below of a described circular-arc scale zone is provided with separately one and refers to that pin icons, the top of a described circular-arc scale zone are respectively arranged with for showing the text box of tachometer value of the rotor of permagnetic synchronous motor.
Described operation interface partly comprises that serial ports parameter arranges part, waveform is selected part, waveform adjustment member, control section and waveform display parameter arrange part, described serial ports parameter arranges part for the initialization to the parameter of serial communication, described serial ports parameter setting unit is divided and is comprised and be useful on choice box that serial port number selects and for the text box of serial communication baud rate is set, the described default selective value of choice box of selecting for serial port number is the serial port number that host computer 9 can be identified, described waveform display parameter setting unit is divided and is comprised for the text box of the translative mode of data I Q form is set, be used for the text box that the text box of cache size is set and is used for arranging sample frequency, described waveform adjustment member comprises for selecting the selection button of the passage of the data acquisition system (DAS) based on DSP, be used for selecting the vernier the shift knob whether amplitude of the passage of the selecteed data acquisition system (DAS) based on DSP is measured, be used for selecting the vernier shift knob of whether time of the passage of the selecteed data acquisition system (DAS) based on DSP being measured, be used for showing the text box of amplitude of the passage of the selecteed data acquisition system (DAS) based on DSP, be used for showing the text box of time of the passage of the selecteed data acquisition system (DAS) based on DSP, for the text box of vernier value at quarter and the left and right tie rod moving for waveform are set, described control section comprises start button, pause button and stop button, described start button, pause button and stop button are carried out and are started tested waveform respectively, the control of operation suspension and termination operation, described waveform selection portion divide comprise for select to show permagnetic synchronous motor rotor speed waveform click frame, so just can be by showing for selecting to show the speed waveform figure of the rotor of permagnetic synchronous motor at waveform display window after selecting.
The method of the described rotating speed interrupt detection system based on visual permagnetic synchronous motor, step is as follows:
Step 1: first start the rotating speed interrupt detection system based on visual permagnetic synchronous motor, the rotating speed of the rotor of 1 pair of permagnetic synchronous motor of speed probe carries out data acquisition, and the tachometer value of the rotor of the permagnetic synchronous motor collecting is delivered to the data acquisition system (DAS) 4 based on DSP, and by the rotating speed detection module 10 operation human-computer interaction interfaces of the rotor based on LabVIEW, serial ports parameter setting unit component selections serial port number and serial communication baud rate on human-computer interaction interface, and make serial communication baud rate consistent with the serial communication baud rate arranging in the SCI module in the data acquisition system (DAS) 4 based on DSP,
Step 2: other places at the rotating speed detection module 10 of the rotor based on LabVIEW arrange the parity check bit of serial communication, data bits and position of rest, the described value that the value of the parity check bit of serial communication, data bits and position of rest setting is arranged with parity check bit, data bits and the position of rest of the serial communication arranging in the SCI module in the data acquisition system (DAS) 4 based on DSP is respectively consistent;
Step 3: in addition at the text box that is used for arranging the translative mode of data I Q form, be used for that the text box of cache size is set and be used for arranging in the text box of sample frequency and carry out respectively the translative mode to data IQ form, the setting of cache size and sample frequency, by being used for selecting the selection button of the passage of the data acquisition system (DAS) based on DSP to carry out the selection to the passage of the data acquisition system (DAS) based on DSP, by the vernier shift knob that is used for selecting whether the amplitude of the passage of the selecteed data acquisition system (DAS) based on DSP being measured, whether be used for selecting the vernier shift knob that the time of the passage of the selecteed data acquisition system (DAS) based on DSP is measured and carry out respectively whether the amplitude measurement of the passage of the selecteed data acquisition system (DAS) based on DSP being made a choice for the text box of vernier value at quarter is set, whether the time measurement of the passage of the selecteed data acquisition system (DAS) based on DSP is made a choice and vernier value at quarter is set,
Step 4: by point, be selected to the rotor that select to show permagnetic synchronous motor speed waveform click the waveform classification of rotating speed that frame is chosen in the rotor of the permagnetic synchronous motor that waveform display window shows, so just completed initialization setting;
Step 5: then after having clicked start button, the rotating speed detection module 10 of the described rotor based on LabVIEW just sends to the data acquisition system (DAS) 4 based on DSP measuring instruction by RS232 interface 8, and data acquisition system (DAS) 4 based on DSP just adopts the implement of interruption function data receiver of serial ports fifo mode, and the detailed process that realizes data receiver is for working as according to the interruption of work principle of serial ports fifo mode, FIFO first receives director data, because order format is four bytes, when receiving four bytes, FIFO just can enter FIFO receive interruption, data acquisition system (DAS) 4 reading command of notice based on DSP are also made response, the measurement order format of described transmission is four bytes, the format specification of the measurement instruction of described transmission is ST**, wherein ST is instruction head, in order to occupy-place, and then first byte * presentation directives sequence number of ST, it is measured corresponding call number, the waveform that will measure in order to identification, and second byte * identification parameter sign, this call number should be consistent with the waveform call number that arranges in DSP program, and in transmitting procedure, letter all will be converted to 16 system ASCII character forms with numeral and represent, described measurement instruction includes the information that initialization arranges, and the rotating speed detection module 10 of the rotor based on LabVIEW is provided with for preserving the array of the information of current initialization setting in internal memory, at every turn before preserving the information of current initialization setting, the information that first information of current initialization setting is kept to the last initialization setting in this array with the last time is compared, if variant, just the information of current initialization setting is saved in for preserving in the array of the information that current initialization arranges, if there is no difference, the data of array that are used for preserving the information of current initialization setting remain unchanged,
Step 6: when the data acquisition system (DAS) 4 based on DSP receives the measurement instruction that includes the information that initialization arranges that comes via RS232 interface 8 transmission, will the corresponding rotary speed data of the waveform classification of the rotating speed of the rotor of the same permagnetic synchronous motor of Real-time Collection be sent in host computer 9 by the passage of selecting according to the selection of the passage of the waveform classification of the rotating speed of the rotor that is chosen in the permagnetic synchronous motor that waveform display window shows in the information of initialization setting and data acquisition system (DAS) to based on DSP;
Step 7: host computer 9 receives after rotary speed data, the rotating speed detection module 10 of the rotor based on LabVIEW just arranges the rotary speed data that buffer area comes storing received to arrive, serial communication be take the transceiving data that 4 bytes are a group at every turn, the rotary speed data receiving is the data of IQ form, through format conversion, convert the rotary speed data receiving to common decimal system signed number represented waveform True Data so again, the concrete mode of format conversion derives signed number for first judging the sign attribute of the rotary speed data receiving, signed number can obtain waveform True Data through inverse operation again, waveform True Data is stored in buffer area in order to generating observation waveform, when deposit data, circulation each time, array all can through to backward shift by the deposit data newly reading in buffer area foremost, the data that array afterbody shifts out are by disallowable,
Step 8: the waveform True Data in buffer area is delivered to waveform display window, and the form with amplitude-time curve shows for the rotating speed of the rotor of corresponding permagnetic synchronous motor, or in instrument display section by refer to that pin icons indicates in circular-arc scale zone and correspondence be used in showing the text box of tachometer value of rotor of permagnetic synchronous motor show tachometer value.
The present invention, in procedure for displaying, just can reduce for processor occupation rate and the work efficiency of the DSP data acquisition system (DAS) of the detection system of the rotating speed of permagnetic synchronous motor high.
Accompanying drawing explanation
Fig. 1 is the rotating speed interrupt detection system syndeton schematic diagram based on visual permagnetic synchronous motor of the present invention.
Embodiment
LabVIEW programming language is easily integrated as the state-of-the-art technology of multi-core processor; With new function management software development, as the function of graphical merging VI; With new BLAS signal handler storehouse, more promptly analyze data; With new constitutional diagram program design mode, develop complete application.
As shown in Figure 1, rotating speed interrupt detection system based on visual permagnetic synchronous motor, be included on the rotor of permagnetic synchronous motor and be provided with speed probe 1, described speed probe 1 is connected with the first input pin 5 of the data acquisition system (DAS) based on DSP 4 with SCI module, the described data acquisition system (DAS) based on DSP 4 is also connected with host computer 9 by RS232 interface 8, described host computer 9, with the rotating speed detection module 10 of the rotor based on LabVIEW, also includes VISA module in described host computer 9.
The rotating speed detection module 10 of the described rotor based on LabVIEW includes human-computer interaction interface, described human-computer interaction interface comprises operation interface part and display interface part, and described operation interface is partly for just sending instruction through 10 pairs of host computers of rotating speed detection module 9 of the rotor based on LabVIEW after the carrying out operation by operation interface; Described display interface is partly divided into waveform display section and instrument display section, and described waveform display section can detect the whole change procedure of the rotary speed data of the rotor of selecting scope interior permanent-magnet synchronous motor; The data of the rotating speed of the rotor that shows permagnetic synchronous motor can be stablized in described instrument display section.
Described waveform display section is by the amplitude-time curve of the rotating speed of the rotor of waveform display window demonstration permagnetic synchronous motor, described instrument display section includes a circular-arc scale zone, a described circular-arc scale zone is used for representing the tachometer value scope of the rotor of permagnetic synchronous motor, the below of a described circular-arc scale zone is provided with separately one and refers to that pin icons, the top of a described circular-arc scale zone are respectively arranged with for showing the text box of tachometer value of the rotor of permagnetic synchronous motor.
Described operation interface partly comprises that serial ports parameter arranges part, waveform is selected part, waveform adjustment member, control section and waveform display parameter arrange part, described serial ports parameter arranges part for the initialization to the parameter of serial communication, described serial ports parameter setting unit is divided and is comprised and be useful on choice box that serial port number selects and for the text box of serial communication baud rate is set, the described default selective value of choice box of selecting for serial port number is the serial port number that host computer 9 can be identified, described waveform display parameter setting unit is divided and is comprised for the text box of the translative mode of data I Q form is set, be used for the text box that the text box of cache size is set and is used for arranging sample frequency, described waveform adjustment member comprises for selecting the selection button of the passage of the data acquisition system (DAS) based on DSP, be used for selecting the vernier the shift knob whether amplitude of the passage of the selecteed data acquisition system (DAS) based on DSP is measured, be used for selecting the vernier shift knob of whether time of the passage of the selecteed data acquisition system (DAS) based on DSP being measured, be used for showing the text box of amplitude of the passage of the selecteed data acquisition system (DAS) based on DSP, be used for showing the text box of time of the passage of the selecteed data acquisition system (DAS) based on DSP, for the text box of vernier value at quarter and the left and right tie rod moving for waveform are set, described control section comprises start button, pause button and stop button, described start button, pause button and stop button are carried out and are started tested waveform respectively, the control of operation suspension and termination operation, described waveform selection portion divide comprise for select to show permagnetic synchronous motor rotor speed waveform click frame, so just can be by showing for selecting to show the speed waveform figure of the rotor of permagnetic synchronous motor at waveform display window after selecting.
The method of the described rotating speed interrupt detection system based on visual permagnetic synchronous motor, step is as follows:
Step 1: first start the rotating speed interrupt detection system based on visual permagnetic synchronous motor, the rotating speed of the rotor of 1 pair of permagnetic synchronous motor of speed probe carries out data acquisition, and the tachometer value of the rotor of the permagnetic synchronous motor collecting is delivered to the data acquisition system (DAS) 4 based on DSP, and by the rotating speed detection module 10 operation human-computer interaction interfaces of the rotor based on LabVIEW, serial ports parameter setting unit component selections serial port number and serial communication baud rate on human-computer interaction interface, and make serial communication baud rate consistent with the serial communication baud rate arranging in the SCI module in the data acquisition system (DAS) 4 based on DSP,
Step 2: other places at the rotating speed detection module 10 of the rotor based on LabVIEW arrange the parity check bit of serial communication, data bits and position of rest, the described value that the value of the parity check bit of serial communication, data bits and position of rest setting is arranged with parity check bit, data bits and the position of rest of the serial communication arranging in the SCI module in the data acquisition system (DAS) 4 based on DSP is respectively consistent;
Step 3: in addition at the text box that is used for arranging the translative mode of data I Q form, be used for that the text box of cache size is set and be used for arranging in the text box of sample frequency and carry out respectively the translative mode to data IQ form, the setting of cache size and sample frequency, by being used for selecting the selection button of the passage of the data acquisition system (DAS) based on DSP to carry out the selection to the passage of the data acquisition system (DAS) based on DSP, by the vernier shift knob that is used for selecting whether the amplitude of the passage of the selecteed data acquisition system (DAS) based on DSP being measured, whether be used for selecting the vernier shift knob that the time of the passage of the selecteed data acquisition system (DAS) based on DSP is measured and carry out respectively whether the amplitude measurement of the passage of the selecteed data acquisition system (DAS) based on DSP being made a choice for the text box of vernier value at quarter is set, whether the time measurement of the passage of the selecteed data acquisition system (DAS) based on DSP is made a choice and vernier value at quarter is set,
Step 4: by point, be selected to the rotor that select to show permagnetic synchronous motor speed waveform click the waveform classification of rotating speed that frame is chosen in the rotor of the permagnetic synchronous motor that waveform display window shows, so just completed initialization setting;
Step 5: then after having clicked start button, the rotating speed detection module 10 of the described rotor based on LabVIEW just sends to the data acquisition system (DAS) 4 based on DSP measuring instruction by RS232 interface 8, in order to make system can respond rapidly the measurement instruction that host computer sends, serial ports reception program adopts interrupt mode to realize, fifo mode interrupts herein, the occupancy of the processor based on DSP data acquisition system (DAS) of detection system of both having saved the rotating speed of permagnetic synchronous motor, has improved again work efficiency.And data acquisition system (DAS) 4 based on DSP just adopts the implement of interruption function data receiver of serial ports fifo mode, and the detailed process that realizes data receiver is for working as according to the interruption of work principle of serial ports fifo mode, FIFO first receives director data, because order format is four bytes, when receiving four bytes, FIFO just can enter FIFO receive interruption, data acquisition system (DAS) 4 reading command of notice based on DSP are also made response, the measurement order format of described transmission is four bytes, the format specification of the measurement instruction of described transmission is ST**, wherein ST is instruction head, in order to occupy-place, and then first byte * presentation directives sequence number of ST, it is measured corresponding call number, the waveform that will measure in order to identification, and second byte * identification parameter sign, this call number should be consistent with the waveform call number that arranges in DSP program, and in transmitting procedure, letter all will be converted to 16 system ASCII character forms with numeral and represent, described measurement instruction includes the information that initialization arranges, and the rotating speed detection module 10 of the rotor based on LabVIEW is provided with for preserving the array of the information of current initialization setting in internal memory, at every turn before preserving the information of current initialization setting, the information that first information of current initialization setting is kept to the last initialization setting in this array with the last time is compared, if variant, just the information of current initialization setting is saved in for preserving in the array of the information that current initialization arranges, if there is no difference, the data of array that are used for preserving the information of current initialization setting remain unchanged,
Step 6: when the data acquisition system (DAS) 4 based on DSP receives the measurement instruction that includes the information that initialization arranges that comes via RS232 interface 8 transmission, will the corresponding rotary speed data of the waveform classification of the rotating speed of the rotor of the same permagnetic synchronous motor of Real-time Collection be sent in host computer 9 by the passage of selecting according to the selection of the passage of the waveform classification of the rotating speed of the rotor that is chosen in the permagnetic synchronous motor that waveform display window shows in the information of initialization setting and data acquisition system (DAS) to based on DSP;
Step 7: host computer 9 receives after rotary speed data, the rotating speed detection module 10 of the rotor based on LabVIEW just arranges the rotary speed data that buffer area comes storing received to arrive, serial communication be take the transceiving data that 4 bytes are a group at every turn, the rotary speed data receiving is the data of IQ form, through format conversion, convert the rotary speed data receiving to common decimal system signed number represented waveform True Data so again, the concrete mode of format conversion derives signed number for first judging the sign attribute of the rotary speed data receiving, signed number can obtain waveform True Data through inverse operation again, waveform True Data is stored in buffer area in order to generating observation waveform, when deposit data, circulation each time, array all can through to backward shift by the deposit data newly reading in buffer area foremost, the data that array afterbody shifts out are by disallowable, like this format conversion being put into host computer does, just can save further the occupancy of the processor based on DSP data acquisition system (DAS) of detection system of the rotating speed of permagnetic synchronous motor, improved again work efficiency,
Step 8: the waveform True Data in buffer area is delivered to waveform display window, and the form with amplitude-time curve shows for the rotating speed of the rotor of corresponding permagnetic synchronous motor, or in instrument display section by refer to that pin icons indicates in circular-arc scale zone and correspondence be used in showing the text box of tachometer value of rotor of permagnetic synchronous motor show tachometer value.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be not depart from technical solution of the present invention content, according to technical spirit of the present invention, within the spirit and principles in the present invention, the any simple modification that above embodiment is done, be equal to replacement and improvement etc., within all still belonging to the protection domain of technical solution of the present invention.
Claims (5)
1. the rotating speed interrupt detection system based on visual permagnetic synchronous motor, it is characterized in that being included on the rotor of permagnetic synchronous motor and be provided with speed probe, described speed probe is connected with the first input pin of the data acquisition system (DAS) based on DSP with SCI module, the described data acquisition system (DAS) based on DSP is also connected with host computer by RS232 interface, described host computer, with the rotating speed detection module of the rotor based on LabVIEW, also includes VISA module in described host computer.
2. the rotating speed interrupt detection system based on visual permagnetic synchronous motor according to claim 1, the rotating speed detection module that it is characterized in that the described rotor based on LabVIEW includes human-computer interaction interface, described human-computer interaction interface comprises operation interface part and display interface part, and described operation interface is partly for just sending instruction to host computer through the rotating speed detection module of the rotor based on LabVIEW after the carrying out operation by operation interface; Described display interface is partly divided into waveform display section and instrument display section, and described waveform display section can detect the whole change procedure of the rotary speed data of the rotor of selecting scope interior permanent-magnet synchronous motor; The data of the rotating speed of the rotor that shows permagnetic synchronous motor can be stablized in described instrument display section.
3. the rotating speed interrupt detection system based on visual permagnetic synchronous motor according to claim 2, it is characterized in that described waveform display section is by the amplitude-time curve of the rotating speed of the rotor of waveform display window demonstration permagnetic synchronous motor, described instrument display section includes a circular-arc scale zone, a described circular-arc scale zone is used for representing the tachometer value scope of the rotor of permagnetic synchronous motor, the below of a described circular-arc scale zone is provided with separately one and refers to pin icons, the top of a described circular-arc scale zone is respectively arranged with for showing the text box of tachometer value of the rotor of permagnetic synchronous motor.
4. according to claim 3 based on visual permanent-magnetic synchronous motor rotor rotary speed detecting system, it is characterized in that described operation interface partly comprises that serial ports parameter arranges part, waveform is selected part, waveform adjustment member, control section and waveform display parameter arrange part, described serial ports parameter arranges part for the initialization to the parameter of serial communication, described serial ports parameter setting unit is divided and is comprised and be useful on choice box that serial port number selects and for the text box of serial communication baud rate is set, the described default selective value of choice box of selecting for serial port number is the serial port number that host computer can be identified, described waveform display parameter setting unit is divided and is comprised for the text box of the translative mode of data I Q form is set, be used for the text box that the text box of cache size is set and is used for arranging sample frequency, described waveform adjustment member comprises for selecting the selection button of the passage of the data acquisition system (DAS) based on DSP, be used for selecting the vernier the shift knob whether amplitude of the passage of the selecteed data acquisition system (DAS) based on DSP is measured, be used for selecting the vernier shift knob of whether time of the passage of the selecteed data acquisition system (DAS) based on DSP being measured, be used for showing the text box of amplitude of the passage of the selecteed data acquisition system (DAS) based on DSP, be used for showing the text box of time of the passage of the selecteed data acquisition system (DAS) based on DSP, for the text box of vernier value at quarter and the left and right tie rod moving for waveform are set, described control section comprises start button, pause button and stop button, described start button, pause button and stop button are carried out and are started tested waveform respectively, the control of operation suspension and termination operation, described waveform selection portion divide comprise for select to show permagnetic synchronous motor rotor speed waveform click frame, so just can be by showing for selecting to show the speed waveform figure of the rotor of permagnetic synchronous motor at waveform display window after selecting.
5. the method based on visual permanent-magnetic synchronous motor rotor rotary speed detecting system according to claim 3, is characterized in that, step is as follows:
Step 1: first start the rotating speed interrupt detection system based on visual permagnetic synchronous motor, speed probe carries out data acquisition to the rotating speed of the rotor of permagnetic synchronous motor, and the tachometer value of the rotor of the permagnetic synchronous motor collecting is delivered to the data acquisition system (DAS) based on DSP, and by the rotating speed detection module operation human-computer interaction interface of the rotor based on LabVIEW, serial ports parameter setting unit component selections serial port number and serial communication baud rate on human-computer interaction interface, and make serial communication baud rate consistent with the serial communication baud rate arranging in the SCI module in the data acquisition system (DAS) based on DSP,
Step 2: other places at the rotating speed detection module of the rotor based on LabVIEW arrange the parity check bit of serial communication, data bits and position of rest, the described value that the value of the parity check bit of serial communication, data bits and position of rest setting is arranged with parity check bit, data bits and the position of rest of the serial communication arranging in the SCI module in the data acquisition system (DAS) based on DSP is respectively consistent;
Step 3: in addition at the text box that is used for arranging the translative mode of data I Q form, be used for that the text box of cache size is set and be used for arranging in the text box of sample frequency and carry out respectively the translative mode to data IQ form, the setting of cache size and sample frequency, by being used for selecting the selection button of the passage of the data acquisition system (DAS) based on DSP to carry out the selection to the passage of the data acquisition system (DAS) based on DSP, by the vernier shift knob that is used for selecting whether the amplitude of the passage of the selecteed data acquisition system (DAS) based on DSP being measured, whether be used for selecting the vernier shift knob that the time of the passage of the selecteed data acquisition system (DAS) based on DSP is measured and carry out respectively whether the amplitude measurement of the passage of the selecteed data acquisition system (DAS) based on DSP being made a choice for the text box of vernier value at quarter is set, whether the time measurement of the passage of the selecteed data acquisition system (DAS) based on DSP is made a choice and vernier value at quarter is set,
Step 4: by point, be selected to the rotor that select to show permagnetic synchronous motor speed waveform click the waveform classification of rotating speed that frame is chosen in the rotor of the permagnetic synchronous motor that waveform display window shows, so just completed initialization setting;
Step 5: then after having clicked start button, the rotating speed detection module of the described rotor based on LabVIEW just sends to the data acquisition system (DAS) based on DSP measuring instruction by RS232 interface, and data acquisition system (DAS) based on DSP just adopts the implement of interruption function data receiver of serial ports fifo mode, and the detailed process that realizes data receiver is for working as according to the interruption of work principle of serial ports fifo mode, FIFO first receives director data, because order format is four bytes, when receiving four bytes, FIFO just can enter FIFO receive interruption, data acquisition system (DAS) 4 reading command of notice based on DSP are also made response, the measurement order format of described transmission is four bytes, the format specification of the measurement instruction of described transmission is ST**, wherein ST is instruction head, in order to occupy-place, and then first byte * presentation directives sequence number of ST, it is measured corresponding call number, the waveform that will measure in order to identification, and second byte * identification parameter sign, this call number should be consistent with the waveform call number that arranges in DSP program, and in transmitting procedure, letter all will be converted to 16 system ASCII character forms with numeral and represent, described measurement instruction includes the information that initialization arranges, and the rotating speed detection module of the rotor based on LabVIEW is provided with for preserving the array of the information of current initialization setting in internal memory, at every turn before preserving the information of current initialization setting, the information that first information of current initialization setting is kept to the last initialization setting in this array with the last time is compared, if variant, just the information of current initialization setting is saved in for preserving in the array of the information that current initialization arranges, if there is no difference, the data of array that are used for preserving the information of current initialization setting remain unchanged,
Step 6: when the data acquisition system (DAS) 4 based on DSP receives the measurement instruction that includes the information that initialization arranges that comes via the transmission of RS232 interface, will the corresponding rotary speed data of the waveform classification of the rotating speed of the rotor of the same permagnetic synchronous motor of Real-time Collection be sent in host computer by the passage of selecting according to the selection of the passage of the waveform classification of the rotating speed of the rotor that is chosen in the permagnetic synchronous motor that waveform display window shows in the information of initialization setting and data acquisition system (DAS) to based on DSP;
Step 7: host computer receives after rotary speed data, the rotating speed detection module of the rotor based on LabVIEW just arranges the rotary speed data that buffer area comes storing received to arrive, serial communication be take the transceiving data that 4 bytes are a group at every turn, the rotary speed data receiving is the data of IQ form, through format conversion, convert the rotary speed data receiving to common decimal system signed number represented waveform True Data so again, the concrete mode of format conversion derives signed number for first judging the sign attribute of the rotary speed data receiving, signed number can obtain waveform True Data through inverse operation again, waveform True Data is stored in buffer area in order to generating observation waveform, when deposit data, circulation each time, array all can through to backward shift by the deposit data newly reading in buffer area foremost, the data that array afterbody shifts out are by disallowable,
Step 8: the waveform True Data in buffer area is delivered to waveform display window, and the form with amplitude-time curve shows for the rotating speed of the rotor of corresponding permagnetic synchronous motor, or in instrument display section by refer to that pin icons indicates in circular-arc scale zone and correspondence be used in showing the text box of tachometer value of rotor of permagnetic synchronous motor show tachometer value.
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| CN201410362287.2A CN104166010A (en) | 2014-07-28 | 2014-07-28 | Visualization-based rotation speed interruption type detection system and method of PMSM |
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