CN109905291A - The synchronous TT&C system of highly reliable bifrequency digital-to-analogue based on RS422 communication - Google Patents
The synchronous TT&C system of highly reliable bifrequency digital-to-analogue based on RS422 communication Download PDFInfo
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Abstract
The synchronous TT&C system of highly reliable bifrequency digital-to-analogue based on RS422 communication, is related to servo-system performance test field；Including servo-system, analog acquisition plate, 422 bus data acquisition plates, display and printer；Wherein, servo-system includes servo power power supply, SERVO CONTROL driver, electromechanical actuator and load；There are two types of communication frequency, the 5ms instruction of Adaption Control System and the 1ms instructions for adapting to frequency characteristic test for test macro setting；In this way data are corresponded, data processing is simple and efficient；A variety of guaranteed reliability's measures such as circular linked list, down trigger, failure self- recoverage are used in the guarantee of communication.Stable, efficient, accurate servo-system performance test may be implemented.The present invention solves the problems, such as dynamic performance test inaccuracy, reduces debugging difficulty, improves measuring accuracy.
Description
Technical field
The present invention relates to a kind of servo-system performance test fields, are based particularly on the highly reliable bifrequency of RS422 communication
Digital-to-analogue synchronizes TT&C system.
Background technique
Servo-system needs to carry out dynamic characteristic test, and specific test is that host computer issues instruction, and then servo-system is rung
It should instruct.The dynamic characteristic of servo-system is calculated relative to the phase and amplitude of instruction according to response.Dynamic characteristic test
Accuracy by data dot density, instruction issues time and data acquisition time is influenced.
The common servo technique of dynamic measurement means for solving RS422, which have, determines sending RS422 instruction and mould by industrial personal computer
Then the time of quasi- acquisition is corresponded with instruction and acquisition points to calculate servo dynamic characteristic.Due to industrial personal computer system when
Between accuracy it is not high, often resulting in has the delay of 1ms between instruction and acquisition, and industrial personal computer issue instruction time and
RS422 number board really instruction issue between have delay, so cannot usually obtain accurate data and data
Consistency is poor.Being limited by data volume also has the investigating method for using 5ms to carry out servo-system test for the period, but 5ms
The sample mode of one point can make sampling point density not high enough, influence the precision of dynamic characteristic calculating.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency of the prior art, the highly reliable double frequency based on RS422 communication is provided
Rate digital-to-analogue synchronizes TT&C system, solves the problems, such as dynamic performance test inaccuracy, reduces debugging difficulty, improve survey
Try precision.
Above-mentioned purpose of the invention is achieved by following technical solution:
The synchronous TT&C system of highly reliable bifrequency digital-to-analogue based on RS422 communication, it is characterised in that: including servo-system,
Analog acquisition plate, 422 bus data acquisition plates, display and printer；
Servo-system: the numerical control instruction that external host computer transmits is received；Numerical control instruction is parsed, is parsed
The control instruction of 2 kinds of frequencies out；Predeterminated position is loaded to using the control instruction driving of 2 kinds of frequencies, generates the digital angle of load
Spend information, analog angle information, digital speed information, digital current information, digital voltage information and digital state monitoring information；
And by digital angle information, analog angle information, digital speed information, digital current information, digital voltage information sum number shape
State monitoring information feeds back to host computer；Analog angle information is sent to analog acquisition plate；By digital angle information, digital speed
Information, digital current information, digital voltage information, digital state monitoring information are sent to 422 bus data acquisition plates；
Analog acquisition plate: the analog angle information that servo-system transmits, the mould under driving to 2 kinds of frequency control instructions are received
Quasi- angle information parses respectively, and parsing result is generated report, is printed by printer；
422 bus data acquisition plates: digital angle information, the digital speed information, number electricity that servo-system transmits are received
Stream information, digital voltage information and digital state monitoring information；Digital angle information point under being driven to 2 kinds of frequency control instructions
It does not parse, parsing result is generated into report, is printed by printer；By digital speed information, digital current information, digital voltage
Information and digital state monitoring information are patterned display by display.
In the synchronous TT&C system of the above-mentioned highly reliable bifrequency digital-to-analogue based on RS422 communication, the control of 2 kinds of frequencies
System instruction include the period be 1ms control instruction and the period be 5ms control instruction.
In the synchronous TT&C system of the above-mentioned highly reliable bifrequency digital-to-analogue based on RS422 communication, the analog acquisition plate needle
It is that the corresponding analog angle information of 1ms control instruction parses amplitude, frequency and phase to the period；Analog acquisition plate is directed to the period
Speed, position are parsed for the corresponding analog angle information of 5ms control instruction.
In the synchronous TT&C system of the above-mentioned highly reliable bifrequency digital-to-analogue based on RS422 communication, 422 bus data is adopted
Collect plate, is that the corresponding digital angle information of 1ms control instruction parses amplitude, frequency and phase for the period；It is for the period
The corresponding digital angle information of 5ms control instruction parses speed, position.
In the synchronous TT&C system of the above-mentioned highly reliable bifrequency digital-to-analogue based on RS422 communication, the servo-system includes
Servo power power supply, SERVO CONTROL driver, electromechanical actuator and load；
Servo power power supply: for the power supply of SERVO CONTROL driver；
SERVO CONTROL driver: receiving the power supply of servo power power supply, receives the digital control finger that external host computer transmits
It enables, numerical control instruction is parsed, the control instruction of 2 kinds of frequencies is parsed；Using the control instruction of 2 kinds of frequencies, driving
Electromechanics movement device；
Electromechanics movement device: receiving the control instruction for 2 kinds of frequencies that SERVO CONTROL driver transmits, and pushes load to be moved to pre-
If position；
Load: under the promotion of electromechanical movement device, being moved to predeterminated position, generates digital angle information, analog angle letter
Breath, digital speed information, digital current information, digital voltage information and digital state monitoring information；By digital angle information, mould
Quasi- angle information, digital speed information, digital current information, digital voltage information and digital state monitoring information feed back to outside
Host computer；Analog angle information is sent to analog acquisition plate；By digital angle information, digital speed information, digital current letter
Breath, digital voltage information and digital state monitoring information are sent to 422 bus data acquisition plates.
In the synchronous TT&C system of the above-mentioned highly reliable bifrequency digital-to-analogue based on RS422 communication, SERVO CONTROL driver is adopted
When making device with the control instruction driving machine of 2 kinds of frequencies is electronic, wherein the complete driving machine of the control instruction of a kind of frequency is electronic to make device one
After a drive cycle, the control instruction for being switched to another frequency continues to drive.
The invention has the following advantages over the prior art:
(1) present invention is realized realizes two kinds of communication frequencys, Adaption Control System test under the system of RS422 digital communication
With two kinds of test cases of frequency characteristic test；
(2) present invention considers the influence that the delay on communication link handles frequency characteristic, instructs first in RS422
Frame triggers analog sampling when transmission, reduces data processing difficulty；
(3) present invention solves the problems, such as dynamic performance test inaccuracy.
Detailed description of the invention
Fig. 1 is the synchronous TT&C system schematic diagram of the present invention；
Fig. 2 is servo-system schematic diagram of the present invention.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments:
The present invention provides the synchronous TT&C system of highly reliable bifrequency digital-to-analogue communicated based on RS422, realizes data one by one
Corresponding, data processing is simple and efficient；Using that circular linked list, down trigger, failure self- recoverage etc. are a variety of in the guarantee of communication can
By property safeguard.Stable, efficient, accurate servo-system performance test may be implemented.The present invention solves system dynamic
The problem that inaccuracy can be tested, reduces debugging difficulty, improves measuring accuracy.
It is as shown in Figure 1 synchronous TT&C system schematic diagram, as seen from the figure, the highly reliable bifrequency number based on RS422 communication
Mould synchronize TT&C system, it is characterised in that: including servo-system, analog acquisition plate, 422 bus data acquisition plates, display and
Printer；
Servo-system: the numerical control instruction that external host computer transmits is received；Numerical control instruction is parsed, is parsed
The control instruction of 2 kinds of frequencies out；Predeterminated position is loaded to using the control instruction driving of 2 kinds of frequencies, generates the digital angle of load
Spend information, analog angle information, digital speed information, digital current information, digital voltage information and digital state monitoring information；
And by digital angle information, analog angle information, digital speed information, digital current information, digital voltage information sum number shape
State monitoring information feeds back to host computer；Analog angle information is sent to analog acquisition plate；By digital angle information, digital speed
Information, digital current information, digital voltage information, digital state monitoring information are sent to 422 bus data acquisition plates；
Analog acquisition plate: the analog angle information that servo-system transmits, the mould under driving to 2 kinds of frequency control instructions are received
Quasi- angle information parses respectively, and parsing result is generated report, is printed by printer；
422 bus data acquisition plates: digital angle information, the digital speed information, number electricity that servo-system transmits are received
Stream information, digital voltage information and digital state monitoring information；Digital angle information point under being driven to 2 kinds of frequency control instructions
It does not parse, parsing result is generated into report, is printed by printer；By digital speed information, digital current information, digital voltage
Information and digital state monitoring information are patterned display by display.
The control instruction of 2 kinds of frequencies include the period be 1ms control instruction and the period be 5ms control instruction.
The analog acquisition plate is that the corresponding analog angle information of 1ms control instruction parses amplitude, frequency for the period
And phase；Analog acquisition plate is that the corresponding analog angle information of 5ms control instruction parses speed, position for the period.
The 422 bus data acquisition plate is that the corresponding digital angle information of 1ms control instruction parses width for the period
Value, frequency and phase；It is that the corresponding digital angle information of 5ms control instruction parses speed, position for the period.
Fig. 2 show servo-system schematic diagram, and as seen from the figure, the servo-system includes servo power power supply, servo control
Driver, electromechanical actuator and load processed；
Servo power power supply: for the power supply of SERVO CONTROL driver；
SERVO CONTROL driver: receiving the power supply of servo power power supply, receives the digital control finger that external host computer transmits
It enables, numerical control instruction is parsed, the control instruction of 2 kinds of frequencies is parsed；Using the control instruction of 2 kinds of frequencies, driving
Electromechanics movement device；
Electromechanics movement device: receiving the control instruction for 2 kinds of frequencies that SERVO CONTROL driver transmits, and pushes load to be moved to pre-
If position；
Load: under the promotion of electromechanical movement device, being moved to predeterminated position, generates digital angle information, analog angle letter
Breath, digital speed information, digital current information, digital voltage information and digital state monitoring information；By digital angle information, mould
Quasi- angle information, digital speed information, digital current information, digital voltage information and digital state monitoring information feed back to outside
Host computer；Analog angle information is sent to analog acquisition plate；By digital angle information, digital speed information, digital current letter
Breath, digital voltage information and digital state monitoring information are sent to 422 bus data acquisition plates.
SERVO CONTROL driver is communicated servo-system state information is anti-in real time for receiving instruction by RS422
Feed host computer, driving electromechanical actuator movement.Electromechanical actuator is the executing agency for pushing load, and analog quantity is housed in load
Angular transducer.The angle of load is acquired by the analog acquisition board of control system.In servo-system state information, load
Analog quantity angle information and instruction be calculate servo characteristic significant data.
When SERVO CONTROL driver uses the control instruction driving machine of 2 kinds of frequencies is electronic to make device, wherein the control of a kind of frequency
After instructing complete driving machine is electronic to make one drive cycle of device, the control instruction for being switched to another frequency continues to drive.
The content that description in the present invention is not described in detail belongs to the well-known technique of those skilled in the art.
Claims (6)
1. the synchronous TT&C system of highly reliable bifrequency digital-to-analogue based on RS422 communication, it is characterised in that: including servo-system, mould
Quasi- collection plate, 422 bus data acquisition plates, display and printer；
Servo-system: the numerical control instruction that external host computer transmits is received；Numerical control instruction is parsed, parses 2
The control instruction of kind frequency；Predeterminated position is loaded to using the control instruction driving of 2 kinds of frequencies, generates the digital angle letter of load
Breath, analog angle information, digital speed information, digital current information, digital voltage information and digital state monitoring information；And it will
Digital angle information, analog angle information, digital speed information, digital current information, digital voltage information and digital state prison
Control information feeds back to host computer；Analog angle information is sent to analog acquisition plate；Digital angle information, digital speed are believed
Breath, digital current information, digital voltage information, digital state monitoring information are sent to 422 bus data acquisition plates；
Analog acquisition plate: the analog angle information that servo-system transmits, the simulation angle under driving to 2 kinds of frequency control instructions are received
Degree information parses respectively, and parsing result is generated report, is printed by printer；
422 bus data acquisition plates: digital angle information, the digital speed information, digital current letter that servo-system transmits are received
Breath, digital voltage information and digital state monitoring information；Digital angle information under driving to 2 kinds of frequency control instructions solves respectively
Analysis, generates report for parsing result, is printed by printer；By digital speed information, digital current information, digital voltage information
Display is patterned by display with digital state monitoring information.
2. the synchronous TT&C system of the highly reliable bifrequency digital-to-analogue according to claim 1 based on RS422 communication, feature exist
In: the control instruction of 2 kinds of frequencies include the period be 1ms control instruction and the period be 5ms control instruction.
3. the synchronous TT&C system of the highly reliable bifrequency digital-to-analogue according to claim 2 based on RS422 communication, feature exist
In: the analog acquisition plate is that the corresponding analog angle information of 1ms control instruction parses amplitude, frequency and phase for the period
Position；Analog acquisition plate is that the corresponding analog angle information of 5ms control instruction parses speed, position for the period.
4. the synchronous TT&C system of the highly reliable bifrequency digital-to-analogue according to claim 3 based on RS422 communication, feature exist
In: the 422 bus data acquisition plate is that the corresponding digital angle information of 1ms control instruction parses amplitude, frequency for the period
Rate and phase；It is that the corresponding digital angle information of 5ms control instruction parses speed, position for the period.
5. the synchronous TT&C system of the highly reliable bifrequency digital-to-analogue according to claim 4 based on RS422 communication, feature exist
In: the servo-system includes servo power power supply, SERVO CONTROL driver, electromechanical actuator and load；
Servo power power supply: for the power supply of SERVO CONTROL driver；
SERVO CONTROL driver: receiving the power supply of servo power power supply, receives the numerical control instruction that external host computer transmits, right
Numerical control instruction is parsed, and the control instruction of 2 kinds of frequencies is parsed；Using the control instruction of 2 kinds of frequencies, driving machine is electronic
Make device；
Electromechanics movement device: the control instruction for 2 kinds of frequencies that SERVO CONTROL driver transmits is received, load is pushed to be moved to default position
It sets；
Load: under the promotion of electromechanical movement device, it is moved to predeterminated position, generates digital angle information, analog angle information, number
Word velocity information, digital current information, digital voltage information and digital state monitoring information；By digital angle information, simulation angle
Degree information, digital speed information, digital current information, digital voltage information and digital state monitoring information feed back to external upper
Machine；Analog angle information is sent to analog acquisition plate；By digital angle information, digital speed information, digital current information, number
Word information of voltage and digital state monitoring information are sent to 422 bus data acquisition plates.
6. the synchronous TT&C system of the highly reliable bifrequency digital-to-analogue according to claim 5 based on RS422 communication, feature exist
In: when SERVO CONTROL driver uses the control instruction driving machine of 2 kinds of frequencies is electronic to make device, wherein the control instruction of a kind of frequency
It is complete driving machine is electronic make one drive cycle of device after, the control instruction for being switched to another frequency continues to drive.
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