CN104166791A - System and method for estimating position angle of rotor of permanent magnet synchronous motor based on visualization - Google Patents
System and method for estimating position angle of rotor of permanent magnet synchronous motor based on visualization Download PDFInfo
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Abstract
The invention provides a system and method for estimating the position angle of a rotor of a permanent magnet synchronous motor based on visualization. According to the system for estimating the position angle of the rotor of the permanent magnet synchronous motor based on visualization, an angular velocity sensor is arranged on the rotor of the permanent magnet synchronous motor, the angular velocity sensor is connected with a first input pin of a data collecting system which is provided with an SCI module and based on a DSP, the data collecting system based on the DSP is further connected with an upper computer through an RS232 interface, the upper computer is provided with a rotor position angle estimation module based on LabVIEW, and the upper computer contains a VISA module. By the adoption of the system and method for estimating the position angle of the rotor of the permanent magnet synchronous motor based on visualization, the defects that in the prior art, due to too many structural elements of a measurement device for obtaining position information of the rotor, the fault rate is often increased, and if the measurement device is combined with a waveform display system, the prior art is more complicated, and then the fault rate is increased are overcome.
Description
Technical field
The invention belongs to the position angle technical field of permanent-magnetic synchronous motor rotor, be specifically related to a kind of based on visual permanent-magnet synchronous motor rotor position angle estimating system and method thereof.
Background technology
Permagnetic synchronous motor commutates by thyristor.Had rotor position information, the position signalling of motor can be used as the processing apparatus that inputs to DSP and so on, then obtains the relations of distribution of electric current, and which opens that pass to control thyristor, so just can realize the operation of changing thyristor.
What conventionally obtain rotor position information is all to rely on the such element of measurement mechanism to carry out; but the measurement mechanism structural detail of existing acquisition rotor position information is too much; tend to the problem that causes failure rate to increase; and if add wave shape display system, thus will the more complicated problem that strengthens failure rate.
Summary of the invention
It is a kind of based on visual permanent-magnet synchronous motor rotor position angle estimating system and method thereof that object of the present invention provides, be included on the rotor of permagnetic synchronous motor and be provided with angular-rate sensor, described angular-rate sensor 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 position angle estimation block of the rotor based on LabVIEW, also includes VISA module in described host computer.Thereby and and if can effectively avoid the measurement mechanism structural detail of acquisition rotor position information of the prior art too much to tend to cause failure rate to increase adding the defect of the problem that wave shape display system will more complicated increasing failure rate in conjunction with its method.
In order to overcome deficiency of the prior art, the invention provides a kind of solution based on visual permanent-magnet synchronous motor rotor position angle estimating system and method thereof, specific as follows:
A kind of based on visual permanent-magnet synchronous motor rotor position angle estimating system, be included on the rotor of permagnetic synchronous motor and be provided with angular-rate sensor 1, described angular-rate sensor 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 position angle estimation block 10 of the rotor based on LabVIEW, also includes VISA module in described host computer 9.
The position angle estimation block 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 part is by just sending instruction to host computer 9 through the position angle estimation block 10 of the rotor based on LabVIEW after the carrying out operation to operation interface; Described display interface part is divided into waveform display section and instrument display section, and described waveform display section can be estimated to the whole change procedure of the position angle data of the rotor of selected scope interior permanent-magnet synchronous motor; The data of the position angle of the estimation of the rotor that shows permagnetic synchronous motor can be stablized in described instrument display section.
Described waveform display section shows the amplitude-time curve of the position angle of the rotor of permagnetic synchronous motor by waveform display window, described instrument display section includes a circular-arc scale zone, the position angle value scope of the rotor of the estimation that a described circular-arc scale zone is used for representing permagnetic synchronous motor, the below of a described circular-arc scale zone is provided with separately one and refers to pin icons, and the top of a described circular-arc scale zone is respectively arranged with the text box of the position angle value of the rotor of the estimation for showing permagnetic synchronous motor.
Described operation interface part 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 the initialization of part for the parameter to 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 the text box that comprises the translative mode for data IQ form is set, be used for the text box of cache size being set and being used for arranging the text box of sample frequency, described waveform adjustment member comprises the selection button of the passage for selecting the data acquisition system (DAS) based on DSP, be used for selecting the vernier the shift knob whether amplitude of the passage to the selecteed data acquisition system (DAS) based on DSP is measured, be used for selecting the vernier shift knob that time of the passage to the selecteed data acquisition system (DAS) based on DSP whether measures, the text box of the amplitude of the passage that is used for showing the selecteed data acquisition system (DAS) based on DSP, the text box of the time of the passage that is used for showing the selecteed data acquisition system (DAS) based on DSP, for the left and right tie rod that the text box of vernier graduation value is set and moves for waveform, 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 the rotor for selecting the estimation that shows permagnetic synchronous motor position angle waveform click frame, so just can be by show the position angle oscillogram of the rotor for selecting the estimation that shows permagnetic synchronous motor after selecting at waveform display window.
The described method based on visual permanent-magnet synchronous motor rotor position angle estimating system, step is as follows:
Step 1: first start based on visual permanent-magnet synchronous motor rotor position angle estimating system, the angular velocity of the rotor of angular-rate sensor 1 to permagnetic synchronous motor carries out data acquisition, and the magnitude of angular velocity of the rotor of the estimation of the permagnetic synchronous motor collecting is delivered to the data acquisition system (DAS) 4 based on DSP, and move human-computer interaction interface by the position angle estimation block 10 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: parity check bit, data bits and position of rest in other places of the position angle estimation block 10 of the rotor based on LabVIEW to serial communication arrange, and the value that the value of the described parity check bit to serial communication, data bits and position of rest setting arranges 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 of the translative mode that is used for data IQ form is set, 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, selection button by the passage that is used for selecting data acquisition system (DAS) based on DSP carries out the selection of the passage to the data acquisition system (DAS) based on DSP, by being used for selecting the vernier the shift knob whether amplitude of the passage to the selecteed data acquisition system (DAS) based on DSP is measured, be used for selecting vernier shift knob that time of the passage to the selecteed data acquisition system (DAS) based on DSP whether measures and carry out respectively the whether amplitude measurement of the passage to the selecteed data acquisition system (DAS) based on DSP and make a choice for the text box of vernier graduation value is set, the time measurement of the passage to the selecteed data acquisition system (DAS) based on DSP makes a choice and vernier graduation value is set,
Step 4: be selected to the waveform classification of position angle that clicks frame and be chosen in the rotor of the estimation of the permagnetic synchronous motor that waveform display window shows of the position angle waveform of the rotor of selecting the estimation that shows permagnetic synchronous motor by point, so just completed initialization setting;
Step 5: then when having clicked after start button, the position angle estimation block 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, described measurement instruction includes the information that initialization arranges, and the position angle estimation block 10 of the rotor based on LabVIEW is provided with the array of the information for preserving 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 the array of the information for preserving current initialization setting, if there is no difference, the data of the array of the information that is used for preserving current initialization setting remain unchanged,
Step 6: when the data acquisition system (DAS) 4 based on DSP receives the measurement instruction of transmitting the information that includes initialization setting of coming via RS232 interface 8, will angular velocity data corresponding the waveform classification of the position angle of the rotor of the estimation of the same permagnetic synchronous motor of Real-time Collection be sent in host computer 9 by the passage of selecting according to the waveform classification of position angle and the selection of the passage of the data acquisition system (DAS) to based on DSP of the rotor of the estimation of the permagnetic synchronous motor that is chosen in the demonstration of waveform display window in the information of initialization setting;
Step 7: host computer 9 receives after angular velocity data, the position angle estimation block 10 of the rotor based on LabVIEW just arranges buffer area and carrys out the angular velocity data that storing received arrives, serial communication is the transceiving data taking 4 bytes as a group at every turn, the angular velocity data receiving is the data of IQ form, convert the angular velocity data receiving to common decimal system signed number represented waveform True Data through format conversion so again, the concrete mode of format conversion is that the sign attribute that first judges the angular velocity data receiving is derived signed number, signed number can obtain the True Data of angular velocity again through inverse operation, and utilize formula (1) to come sequentially to obtain from the position angle of the rotor of the 1st estimation to k+1 sampling period:
θ
S(k+1)＝θ
S(k)+ω(k)T
S (1)
Wherein θ
s(k+1) be the position angle of the rotor of the estimation in k+1 sampling period, θ
s(k) be the position angle of the rotor of the estimation in k sampling period, the True Data of the angular velocity that ω (k) is k sampling period, T
sit is a sampling period, k is more than or equal to 0 integer, obtain thus from the waveform True Data of the position angle of the rotor of the 1st estimation to k+1 sampling period, waveform True Data is stored in buffer area in order to generating observation waveform, in the time of deposit data, each time circulation, 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 shows with the form of amplitude-time curve for the position angle of the rotor of corresponding permagnetic synchronous motor, or instrument display section by refer to that pin icons indicates in circular-arc scale zone and text box in the position angle value of the rotor of the estimation that is used for showing permagnetic synchronous motor of correspondence in display position angle value.
The present invention, in procedure for displaying, just can complete the estimation to rotor position angle by single angular velocity sensor element, has reduced greatly failure rate.
Brief description of the drawings
Fig. 1 is of the present invention based on visual permanent-magnet synchronous motor rotor position angle estimating system syndeton schematic diagram.
Embodiment
LabVIEW is fused to the work that creates user interface (being called front panel) in the middle of the construction cycle naturally.Program/subroutine of LabVIEW is called as virtual instrument (VI).Each VI has three ingredients: flow chart, front panel and icon/connector.Connector is for calling this VI's for other flow chart.The VI that programmer can utilize the control control on front panel that data input is being moved, or with show control operation result is exported.Front panel can also be as the interface of program: each virtual instrument both can be used as user interface front panel, moved as a program; Also can be used as a node and be put in another VI flow chart, couple together by connector panel, front panel defines the input and output of VI.This means each VI, be embedded into a large-scale project as subroutine before, can test easily.
As shown in Figure 1, based on visual permanent-magnet synchronous motor rotor position angle estimating system, be included on the rotor of permagnetic synchronous motor and be provided with angular-rate sensor 1, described angular-rate sensor 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 position angle estimation block 10 of the rotor based on LabVIEW, also includes VISA module in described host computer 9.The position angle estimation block 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 part is by just sending instruction to host computer 9 through the position angle estimation block 10 of the rotor based on LabVIEW after the carrying out operation to operation interface; Described display interface part is divided into waveform display section and instrument display section, and described waveform display section can be estimated to the whole change procedure of the position angle data of the rotor of selected scope interior permanent-magnet synchronous motor; The data of the position angle of the estimation of the rotor that shows permagnetic synchronous motor can be stablized in described instrument display section.Described waveform display section shows the amplitude-time curve of the position angle of the rotor of permagnetic synchronous motor by waveform display window, described instrument display section includes a circular-arc scale zone, the position angle value scope of the rotor of the estimation that a described circular-arc scale zone is used for representing permagnetic synchronous motor, the below of a described circular-arc scale zone is provided with separately one and refers to pin icons, and the top of a described circular-arc scale zone is respectively arranged with the text box of the position angle value of the rotor of the estimation for showing permagnetic synchronous motor.Described operation interface part 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 the initialization of part for the parameter to 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 the text box that comprises the translative mode for data IQ form is set, be used for the text box of cache size being set and being used for arranging the text box of sample frequency, described waveform adjustment member comprises the selection button of the passage for selecting the data acquisition system (DAS) based on DSP, be used for selecting the vernier the shift knob whether amplitude of the passage to the selecteed data acquisition system (DAS) based on DSP is measured, be used for selecting the vernier shift knob that time of the passage to the selecteed data acquisition system (DAS) based on DSP whether measures, the text box of the amplitude of the passage that is used for showing the selecteed data acquisition system (DAS) based on DSP, the text box of the time of the passage that is used for showing the selecteed data acquisition system (DAS) based on DSP, for the left and right tie rod that the text box of vernier graduation value is set and moves for waveform, 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 the rotor for selecting the estimation that shows permagnetic synchronous motor position angle waveform click frame, so just can be by show the position angle oscillogram of the rotor for selecting the estimation that shows permagnetic synchronous motor after selecting at waveform display window.
The described method based on visual permanent-magnet synchronous motor rotor position angle estimating system, step is as follows:
Step 1: first start based on visual permanent-magnet synchronous motor rotor position angle estimating system, the angular velocity of the rotor of angular-rate sensor 1 to permagnetic synchronous motor carries out data acquisition, and the magnitude of angular velocity of the rotor of the estimation of the permagnetic synchronous motor collecting is delivered to the data acquisition system (DAS) 4 based on DSP, and move human-computer interaction interface by the position angle estimation block 10 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: parity check bit, data bits and position of rest in other places of the position angle estimation block 10 of the rotor based on LabVIEW to serial communication arrange, and the value that the value of the described parity check bit to serial communication, data bits and position of rest setting arranges 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 of the translative mode that is used for data IQ form is set, 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, selection button by the passage that is used for selecting data acquisition system (DAS) based on DSP carries out the selection of the passage to the data acquisition system (DAS) based on DSP, by being used for selecting the vernier the shift knob whether amplitude of the passage to the selecteed data acquisition system (DAS) based on DSP is measured, be used for selecting vernier shift knob that time of the passage to the selecteed data acquisition system (DAS) based on DSP whether measures and carry out respectively the whether amplitude measurement of the passage to the selecteed data acquisition system (DAS) based on DSP and make a choice for the text box of vernier graduation value is set, the time measurement of the passage to the selecteed data acquisition system (DAS) based on DSP makes a choice and vernier graduation value is set,
Step 4: be selected to the waveform classification of position angle that clicks frame and be chosen in the rotor of the estimation of the permagnetic synchronous motor that waveform display window shows of the position angle waveform of the rotor of selecting the estimation that shows permagnetic synchronous motor by point, so just completed initialization setting;
Step 5: then when having clicked after start button, the position angle estimation block 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, described measurement instruction includes the information that initialization arranges, and the position angle estimation block 10 of the rotor based on LabVIEW is provided with the array of the information for preserving 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 the array of the information for preserving current initialization setting, if there is no difference, the data of the array of the information that is used for preserving current initialization setting remain unchanged,
Step 6: when the data acquisition system (DAS) 4 based on DSP receives the measurement instruction of transmitting the information that includes initialization setting of coming via RS232 interface 8, will angular velocity data corresponding the waveform classification of the position angle of the rotor of the estimation of the same permagnetic synchronous motor of Real-time Collection be sent in host computer 9 by the passage of selecting according to the waveform classification of position angle and the selection of the passage of the data acquisition system (DAS) to based on DSP of the rotor of the estimation of the permagnetic synchronous motor that is chosen in the demonstration of waveform display window in the information of initialization setting;
Step 7: host computer 9 receives after angular velocity data, the position angle estimation block 10 of the rotor based on LabVIEW just arranges buffer area and carrys out the angular velocity data that storing received arrives, serial communication is the transceiving data taking 4 bytes as a group at every turn, the angular velocity data receiving is the data of IQ form, convert the angular velocity data receiving to common decimal system signed number represented waveform True Data through format conversion so again, the concrete mode of format conversion is that the sign attribute that first judges the angular velocity data receiving is derived signed number, signed number can obtain the True Data of angular velocity again through inverse operation, and utilize formula (1) to come sequentially to obtain from the position angle of the rotor of the 1st estimation to k+1 sampling period:
θ
S(k+1)＝θ
S(k)+ω(k)T
S (1)
Wherein θ
s(k+1) be the position angle of the rotor of the estimation in k+1 sampling period, θ
s(k) be the position angle of the rotor of the estimation in k sampling period, the True Data of the angular velocity that ω (k) is k sampling period, T
sit is a sampling period, k is more than or equal to 0 integer, obtain thus from the waveform True Data of the position angle of the rotor of the 1st estimation to k+1 sampling period, waveform True Data is stored in buffer area in order to generating observation waveform, in the time of deposit data, each time circulation, 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 shows with the form of amplitude-time curve for the position angle of the rotor of corresponding permagnetic synchronous motor, or instrument display section by refer to that pin icons indicates in circular-arc scale zone and text box in the position angle value of the rotor of the estimation that is used for showing permagnetic synchronous motor of correspondence in display position angle 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, but 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 amendment 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. one kind based on visual permanent-magnet synchronous motor rotor position angle estimating system, it is characterized in that being included on the rotor of permagnetic synchronous motor and be provided with angular-rate sensor, described angular-rate sensor 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 position angle estimation block of the rotor based on LabVIEW, also includes VISA module in described host computer.
2. according to claim 1 based on visual permanent-magnet synchronous motor rotor position angle estimating system, the position angle estimation block 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 part is by just sending instruction to host computer through the position angle estimation block of the rotor based on LabVIEW after the carrying out operation to operation interface; Described display interface part is divided into waveform display section and instrument display section, and described waveform display section can be estimated to the whole change procedure of the position angle data of the rotor of selected scope interior permanent-magnet synchronous motor; The data of the position angle of the estimation of the rotor that shows permagnetic synchronous motor can be stablized in described instrument display section.
3. according to claim 2 based on visual permanent-magnet synchronous motor rotor position angle estimating system, it is characterized in that described waveform display section shows the amplitude-time curve of the position angle of the rotor of permagnetic synchronous motor by waveform display window, described instrument display section includes a circular-arc scale zone, the position angle value scope of the rotor of the estimation that a described circular-arc scale zone is used for representing 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 the text box of the position angle value of the rotor of the estimation for showing permagnetic synchronous motor.
4. according to claim 3 based on visual permanent-magnet synchronous motor rotor position angle estimating system, it is characterized in that described operation interface part 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 the initialization of part for the parameter to 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 the text box that comprises the translative mode for data IQ form is set, be used for the text box of cache size being set and being used for arranging the text box of sample frequency, described waveform adjustment member comprises the selection button of the passage for selecting the data acquisition system (DAS) based on DSP, be used for selecting the vernier the shift knob whether amplitude of the passage to the selecteed data acquisition system (DAS) based on DSP is measured, be used for selecting the vernier shift knob that time of the passage to the selecteed data acquisition system (DAS) based on DSP whether measures, the text box of the amplitude of the passage that is used for showing the selecteed data acquisition system (DAS) based on DSP, the text box of the time of the passage that is used for showing the selecteed data acquisition system (DAS) based on DSP, for the left and right tie rod that the text box of vernier graduation value is set and moves for waveform, 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 the rotor for selecting the estimation that shows permagnetic synchronous motor position angle waveform click frame, so just can be by show the position angle oscillogram of the rotor for selecting the estimation that shows permagnetic synchronous motor after selecting at waveform display window.
5. the method based on visual permanent-magnet synchronous motor rotor position angle estimating system according to claim 4, is characterized in that, step is as follows:
Step 1: first start based on visual permanent-magnet synchronous motor rotor position angle estimating system, the angular velocity of the rotor of angular-rate sensor to permagnetic synchronous motor carries out data acquisition, and the magnitude of angular velocity of the rotor of the estimation of the permagnetic synchronous motor collecting is delivered to the data acquisition system (DAS) based on DSP, and by the position angle estimation block 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: parity check bit, data bits and position of rest in other places of the position angle estimation block of the rotor based on LabVIEW to serial communication arrange, and the value that the value of the described parity check bit to serial communication, data bits and position of rest setting arranges 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 of the translative mode that is used for data IQ form is set, 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, selection button by the passage that is used for selecting data acquisition system (DAS) based on DSP carries out the selection of the passage to the data acquisition system (DAS) based on DSP, by being used for selecting the vernier the shift knob whether amplitude of the passage to the selecteed data acquisition system (DAS) based on DSP is measured, be used for selecting vernier shift knob that time of the passage to the selecteed data acquisition system (DAS) based on DSP whether measures and carry out respectively the whether amplitude measurement of the passage to the selecteed data acquisition system (DAS) based on DSP and make a choice for the text box of vernier graduation value is set, the time measurement of the passage to the selecteed data acquisition system (DAS) based on DSP makes a choice and vernier graduation value is set,
Step 4: be selected to the waveform classification of position angle that clicks frame and be chosen in the rotor of the estimation of the permagnetic synchronous motor that waveform display window shows of the position angle waveform of the rotor of selecting the estimation that shows permagnetic synchronous motor by point, so just completed initialization setting;
Step 5: then when having clicked after start button, the position angle estimation block of the described rotor based on LabVIEW just sends to the data acquisition system (DAS) based on DSP measuring instruction by RS232 interface, described measurement instruction includes the information that initialization arranges, and the position angle estimation block of the rotor based on LabVIEW is provided with the array of the information for preserving 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 the array of the information for preserving current initialization setting, if there is no difference, the data of the array of the information that is used for preserving current initialization setting remain unchanged,
Step 6: when the data acquisition system (DAS) based on DSP receives the measurement instruction of transmitting the information that includes initialization setting of coming via RS232 interface 8, will angular velocity data corresponding the waveform classification of the position angle of the rotor of the estimation of the same permagnetic synchronous motor of Real-time Collection be sent in host computer by the passage of selecting according to the waveform classification of position angle and the selection of the passage of the data acquisition system (DAS) to based on DSP of the rotor of the estimation of the permagnetic synchronous motor that is chosen in the demonstration of waveform display window in the information of initialization setting;
Step 7: host computer receives after angular velocity data, the position angle estimation block of the rotor based on LabVIEW just arranges buffer area and carrys out the angular velocity data that storing received arrives, serial communication is the transceiving data taking 4 bytes as a group at every turn, the angular velocity data receiving is the data of IQ form, convert the angular velocity data receiving to common decimal system signed number represented waveform True Data through format conversion so again, the concrete mode of format conversion is that the sign attribute that first judges the angular velocity data receiving is derived signed number, signed number can obtain the True Data of angular velocity again through inverse operation, and utilize formula (1) to come sequentially to obtain from the position angle of the rotor of the 1st estimation to k+1 sampling period:
θ
S(k+1)＝θ
S(k)+ω(k)T
S (1)
Wherein θ
s(k+1) be the position angle of the rotor of the estimation in k+1 sampling period, θ
s(k) be the position angle of the rotor of the estimation in k sampling period, the True Data of the angular velocity that ω (k) is k sampling period, T
sit is a sampling period, k is more than or equal to 0 integer, obtain thus from the waveform True Data of the position angle of the rotor of the 1st estimation to k+1 sampling period, waveform True Data is stored in buffer area in order to generating observation waveform, in the time of deposit data, each time circulation, 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 shows with the form of amplitude-time curve for the position angle of the rotor of corresponding permagnetic synchronous motor, or instrument display section by refer to that pin icons indicates in circular-arc scale zone and text box in the position angle value of the rotor of the estimation that is used for showing permagnetic synchronous motor of correspondence in display position angle value.
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|---|---|---|---|
| CN201410364111.0A CN104166791B (en) | 2014-07-28 | 2014-07-28 | Based on visual permanent-magnet synchronous motor rotor position angle estimating system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105720880A (en) * | 2015-12-01 | 2016-06-29 | 清华大学 | Motor corner real-time estimation method and apparatus |
| CN106526214A (en) * | 2016-11-02 | 2017-03-22 | 中车株洲电力机车研究所有限公司 | Angular velocity calculation method and apparatus |
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| CN1862232B (en) * | 2005-05-13 | 2010-05-05 | 比亚迪股份有限公司 | System and method for estimating side drift angle of motor vehicle |
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| 吴丽花: "基于LabVIEW的永磁同步电机测试系统研究", 《中国优秀硕士学位论文全文数据库工程科技II辑》 * |
| 徐华忠: "基于LabVIEW和DSP串口的多通道电机参数采集系统", 《电子测量技术》 * |
| 董志斌: "基于LabVIEW的步进电机测控系统设计", 《企业技术开发》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720880A (en) * | 2015-12-01 | 2016-06-29 | 清华大学 | Motor corner real-time estimation method and apparatus |
| CN105720880B (en) * | 2015-12-01 | 2017-07-21 | 清华大学 | A kind of motor corner real-time estimation method and device |
| CN106526214A (en) * | 2016-11-02 | 2017-03-22 | 中车株洲电力机车研究所有限公司 | Angular velocity calculation method and apparatus |
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