CN218003710U - Zero-position consistent calibration device for sine and cosine rotary transformer of radar servo system - Google Patents
Zero-position consistent calibration device for sine and cosine rotary transformer of radar servo system Download PDFInfo
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- CN218003710U CN218003710U CN202221459422.1U CN202221459422U CN218003710U CN 218003710 U CN218003710 U CN 218003710U CN 202221459422 U CN202221459422 U CN 202221459422U CN 218003710 U CN218003710 U CN 218003710U
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Abstract
The utility model discloses a consistent calibration device of radar servo system sine and cosine resolver zero-bit, including data display device, power, drive mechanism, sine and cosine resolver, change cable, data acquisition processing apparatus, state cable soon, the power is connected data display device with data acquisition processing apparatus, the sine and cosine resolver connects the one end of changing the cable soon, the other end of changing the cable soon is connected data acquisition processing apparatus, the both ends of state cable are connected respectively data acquisition processing apparatus with data display device, drive mechanism includes the first follow driving wheel, the first is connected from the driving wheel sine resolver. The utility model has the advantages that: zero-bit consistency of the radar servo system can be guaranteed, and later maintenance is facilitated.
Description
Technical Field
The utility model belongs to the technical field of the radar test technique and specifically relates to radar servo rotary transformer zero-bit unanimous calibration device.
Background
The rotary transformer is an instrument for detecting angles, positions and speeds, is suitable for severe occasions with high temperature, severe cold and moisture, can detect angle signals of a system in real time, and can be widely applied to various industries needing angle and position detection, such as aerospace, ships, weapons, mines, oil fields and the like.
Currently, servo systems of various radars use sine and cosine resolver to measure the real-time angular orientation of the antenna.
When the functions of the sine and cosine resolver are debugged, zero calibration needs to be carried out.
The traditional zero calibration method comprises two steps: 1) Continuously rotating the antenna at a low speed through a transmission mechanism until the precision instrument detects an ideal zero position; 2) And writing and storing the current angle feedback value of the antenna acquired by the rotary transformer into a servo driver to be used as an electrical zero value. The process requires rotating the load antenna and the cooperation of the servo driver and the computer to complete the positioning. However, the sine-cosine resolver has different manufacturing processes, different safety errors and the like, so that the electrical zero value of each set of radar servo system is different. When the radar is maintained, zero calibration work needs to be carried out again, and by using the traditional calibration method, zero data needs to be written into software of the servo driver again after the servo driver is replaced, so that the method is tedious, long in time consumption and easy to delay the execution task of the radar.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms part of the prior art that is already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve lies in: how to solve the problem that the zero calibration mode of sine and cosine resolver in the prior art is long in time and time-consuming.
The utility model discloses a following technical means realizes solving above-mentioned technical problem:
the radar servo system rotary transformer zero-position consistency calibration device comprises a data display device, a power supply, a transmission mechanism, a sine-cosine rotary transformer, a rotary transformer cable, a data acquisition and processing device and a state cable, wherein the power supply is connected with the data display device and the data acquisition and processing device, the sine-cosine rotary transformer is connected with one end of the rotary transformer cable, the other end of the rotary transformer cable is connected with the data acquisition and processing device, two ends of the state cable are respectively connected with the data acquisition and processing device and the data display device, the transmission mechanism comprises a first driven wheel, and the first driven wheel is connected with the sine-cosine rotary transformer.
The utility model discloses during the use, at first write in data acquisition processing apparatus with the unanimous data of zero-bit, if change sine and cosine resolver, manual rotation is first from the driving wheel, and drive sine and cosine resolver and rotate, and simultaneously, observe data display device's data feedback, and finely tune first from the driving wheel and show the stall when controlling for 0 degree until data, and lock first from driving wheel and make it motionless, go with antenna and motor reassembling after, form the assembly work of complete device, all assemble like this and use behind each set of device or the change sine and cosine resolver, even if guarantee to change sine and cosine resolver, all zero-bit data are still unanimous, need not to write in zero-bit data again to servo driver's software. The utility model discloses when needing to change sine and cosine resolver, only change sine and cosine resolver, need not to write into zero-bit data in servo driver's software, easy operation, the device overall arrangement is compact, portable, the practicality is strong, can guarantee the zero-bit uniformity of the great radar servo system in batches, the later maintenance of being convenient for; the detection and calibration data can be displayed through imaging, and the calibration result is more accurate.
Preferably, the transmission mechanism further comprises a motor, a driving wheel and a second driven wheel, the motor is connected with the driving wheel, and the driving wheel, the first driven wheel and the second driven wheel are meshed.
In the actual use process, after the motor is connected with the speed reducer, the motor can be used as a power source for driving the gear set, and the speed change, the gear rotation and the speed stability are realized through the gear transmission of the gear set.
Preferably, the second driven wheel is connected to a load.
Preferably, the device further comprises a coupler, the transmission mechanism is connected with one end of the coupler, and the other end of the coupler is connected with the sine-cosine resolver.
Preferably, the coupling is an elastic coupling.
Preferably, the data acquisition and processing device comprises an excitation module, an R/D conversion module and a control module, wherein the excitation module is connected with the control module, and the control module is connected with the R/D conversion module.
The excitation module can generate a sinusoidal excitation signal of 5V/2kHz and transmit the sinusoidal excitation signal through a rotary transformer cable; the R/D conversion module can perform analog-to-digital conversion on the analog signal output by the rotary transformer; the control module processes the output digital signal of the R/D conversion module.
Preferably, the output range of the power supply is-3.3V-24V.
Preferably, the power supply is a direct current power supply.
The utility model has the advantages that:
(1) The utility model discloses during the use, at first write in data acquisition processing apparatus with the unanimous data of zero-position, if change sine and cosine resolver, manual rotation is first from the driving wheel, and drive sine and cosine resolver and rotate, and simultaneously, observe data display device's data feedback, and finely tune first from the driving wheel and show stall when being about 0 degree until data, and lock first from driving wheel and make it motionless, go back with antenna and motor reassembling, form the assembly work of complete device, all assemble like this and use behind each set of device or the change sine and cosine resolver, even if guarantee to change sine and cosine resolver, all zero-position data are still unanimous, need not to write in the zero-position data again in servo driver's the software. The utility model discloses when needing to change sine and cosine resolver, only change sine and cosine resolver, need not to write into zero-bit data in servo driver's software, easy operation, the device overall arrangement is compact, portable, the practicality is strong, can guarantee the zero-bit uniformity of the great radar servo system in batches, the later maintenance of being convenient for; the detection and calibration data can be displayed in an imaging way, and the calibration result is more accurate;
(2) After the motor is connected with the speed reducer, the motor can be used as a power source for driving the gear set, and the gear set is in gear transmission, so that the speed change and the gear rotation are realized, and the speed is stable;
(3) The excitation module can generate a sinusoidal excitation signal of 5V/2 kHz; the R/D conversion module can perform analog-to-digital conversion on the analog signal output by the rotary transformer; the control module processes the output digital signal of the R/D conversion module.
Drawings
Fig. 1 is a schematic structural diagram of a zero-position consistency calibration device for a rotary transformer of a radar servo system in an embodiment of the present invention;
fig. 2 is a schematic distribution diagram of the driving wheel and the first and second driven wheels according to the embodiment of the present invention;
the reference numbers in the figures:
1. a data display device; 2. a power source; 3. a transmission mechanism; 31. a driving wheel; 32. a first driven wheel; 33. a second driven wheel; 4. sine and cosine resolver; 5. a rotating transformer cable; 6. a data acquisition processing device; 7. a status cable; 8. a coupling;
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, the calibration device for zero position coincidence of a resolver of a radar servo system comprises a data display device 1, a power supply 2, a transmission mechanism 3, a sine-cosine resolver 4, a resolver cable 5, a data acquisition processing device 6 and a state cable 7.
The power supply 2 is connected with the data display device 1 and the data acquisition processing device 6, the power supply 2 provides power for the data display device 1 and the data acquisition processing device 6, the power supply 2 is a direct-current power supply, and the output range of the power supply 2 is-3.3V-24V. The power supply 2 can simultaneously provide power supply output signals of +24V, + 5V, + 12V, +3.3V, + 1.8V. The data display device 1 is a conventional device capable of displaying angle information, angular velocity information, and angular acceleration information.
The transmission mechanism 3 comprises a motor and a gear set, the gear set comprises a driving wheel 31, a first driven wheel 32 and a second driven wheel 33, the diameter of the driving wheel 31 is smaller, the diameters of the first driven wheel 32 and the second driven wheel 33 are larger, and the reduction of the speed is realized by a pinion and gearwheel transmission mode. The first driven pulley 32 is used to drive the sine-cosine resolver 4, and the second driven pulley 33 is used to drive a load, which is an antenna. The driving pulley 31 is driven by a motor.
In the embodiment, the driving wheel 31, the first driven wheel 32 and the second driven wheel 33 all adopt gears; the rotation is realized by adopting gear engagement, and the speed is stable.
The calibration device for zero-position consistency of the rotary transformer of the radar servo system further comprises a coupler 8, the first driven wheel 32 is connected with one end of the coupler 8, and the other end of the coupler 8 is connected with the sine-cosine rotary transformer 4. The coupling 8 is an elastic coupling.
Normally, the output shaft of the motor 31 and the driving gear, the load and the sine-cosine resolver 4 are respectively provided with a driven gear, and the three gears are engaged with each other. When the structure is assembled, a worker generally ensures that the three gears can rotate freely after being meshed, and the assembly is completed.
In this embodiment, the sine-cosine resolver 4 is connected to one end of the resolver cable 5, the other end of the resolver cable 5 is connected to the data acquisition and processing device 6, and two ends of the status cable 7 are respectively connected to the data acquisition and processing device 6 and the data display device 1.
The data acquisition and processing device 6 comprises an excitation module, an R/D conversion module and a control module, wherein the excitation module is connected with the control module, and the control module is connected with the R/D conversion module. The excitation module can generate a sinusoidal excitation signal of 5V/2 kHz; the R/D conversion module can perform analog-to-digital conversion on the analog signal output by the rotary transformer; the control module processes the output digital signal of the R/D conversion module. The modules in the data acquisition and processing device 6 are all present and can be selected for use as required.
The working process of the embodiment is as follows:
the motor 31 drives the first driven wheel 32 to rotate, the second driven wheel 32 is connected with the coupler 8 and drives the sine and cosine resolver 4 to rotate, and the sine and cosine resolver 4 and the data acquisition and processing device 6 perform sine excitation signal transmission, sine modulation signal transmission and cosine modulation signal transmission through the resolver cable 5; the data acquisition and processing device 6 sends the angle and the angular speed information to the data display device 1 through the state cable 7 for displaying, and can quickly obtain a zero value.
The device of the embodiment has compact layout, is convenient to carry and strong in practicability, can ensure zero-bit consistency of large-batch radar servo systems, and is convenient for later maintenance; the detection and calibration data can be displayed through imaging, and the calibration result is more accurate.
In the calibration device for zero position consistency of the sine and cosine resolver of the radar servo system in the first embodiment, the zero position detection and calibration process includes the following steps:
1) The data display device 1, the power supply 2, the transmission mechanism 3, the sine and cosine resolver 4, the resolver cable 5, the data acquisition and processing device 6, the status cable 7 and the coupling 8 are connected according to the connection mode in the first embodiment.
2) The functions of the data display device 1 and the data acquisition and processing device 6 are detected, and whether the zero data can be read and written normally is judged. Specifically, the zero data is some data (also called dummy data) written randomly, and is used to determine whether the functions of the data display device 1 and the data acquisition and processing device 6 are normal. Before actual work, the states of all devices are judged, and the work can be continued only when the devices have no faults.
3) Writing the zero consistent data into the data acquisition and processing device 6; the zero-consistent data here is true zero-bit data.
4) The transmission mechanism 3 continuously rotates the antenna at a low speed until the precision instrument detects an ideal zero position.
5) The ideal zero position of the antenna is mechanically locked, the driving wheel 31 and the second driven wheel 33 in the transmission mechanism 3 are separated, the first driven wheel 32 is rotated at a low speed, specifically, the first driven wheel 32 can be manually rotated firstly, the fine adjustment is performed by knocking with a tool in the later period, and meanwhile, the angle data and the angle curve displayed by the data display device 1 are observed.
6) The angular profile should smoothly exhibit an increasing or decreasing trend during rotation of the first driven wheel 32. When the angle data shows 0 ± 0.5A °, the rotation is stopped, and the driving pulley 31 and the second driven pulley 33 are reassembled. Where a is the maximum error value for zero calibration.
7) And (4) electrifying the radar again, observing whether the current antenna angle is 0 +/-A degrees or not, if the current antenna angle meets the requirement, finishing calibration, and otherwise, recycling the steps 3) to 6).
When the sine and cosine resolver is replaced, the zero position data of each set of devices can be ensured to be consistent according to the steps 3) -6), the zero position data can be calibrated consistently only by rotating the first driven wheel 32 and matching the data displayed by the data display device 1, and the zero position data does not need to be written into the software of the driver.
Example two:
on the basis of the first embodiment, in order to ensure low-speed rotation, a speed reducer can be connected behind the motor, and the speed reducer is connected with the driving wheel 31.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The radar servo system sine and cosine resolver zero-position consistency calibration device is characterized by comprising a data display device, a power supply, a transmission mechanism, a sine and cosine resolver, a resolver cable, a data acquisition processing device and a state cable, wherein the power supply is connected with the data display device and the data acquisition processing device, the sine and cosine resolver is connected with one end of the resolver cable, the other end of the resolver cable is connected with the data acquisition processing device, two ends of the state cable are respectively connected with the data acquisition processing device and the data display device, the transmission mechanism comprises a first driven wheel, and the first driven wheel is connected with the sine and cosine resolver.
2. The radar servo system sine and cosine resolver zero position consistency calibration device as claimed in claim 1, wherein the transmission mechanism further comprises a motor, a driving wheel, and a second driven wheel, the motor is connected with the driving wheel, and the driving wheel, the first driven wheel and the second driven wheel are engaged with each other.
3. The radar servo system sine and cosine resolver zero position coincidence calibration device according to claim 2, wherein the second driven wheel is connected with a load.
4. The radar servo system sine and cosine resolver zero-position consistency calibration device according to claim 1, further comprising a coupler, wherein the transmission mechanism is connected with one end of the coupler, and the other end of the coupler is connected with the sine and cosine resolver.
5. The radar servo system sine and cosine resolver zero position consistency calibration device as claimed in claim 4, wherein the coupler is an elastic coupler.
6. The radar servo system sine and cosine resolver zero position consistency calibration device according to claim 1, wherein the data acquisition and processing device comprises an excitation module, an R/D conversion module and a control module, the excitation module is connected with the control module, and the control module is connected with the R/D conversion module.
7. The radar servo system sine and cosine resolver zero position coincidence calibration device according to claim 1, wherein the power supply output range is-3.3V-24V.
8. The radar servo system sine-cosine resolver zero-position consistency calibration device as claimed in claim 1, wherein the power supply is a direct current power supply.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221459422.1U CN218003710U (en) | 2022-06-10 | 2022-06-10 | Zero-position consistent calibration device for sine and cosine rotary transformer of radar servo system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221459422.1U CN218003710U (en) | 2022-06-10 | 2022-06-10 | Zero-position consistent calibration device for sine and cosine rotary transformer of radar servo system |
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| CN218003710U true CN218003710U (en) | 2022-12-09 |
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| CN202221459422.1U Active CN218003710U (en) | 2022-06-10 | 2022-06-10 | Zero-position consistent calibration device for sine and cosine rotary transformer of radar servo system |
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