CN102436183A - Atmospheric parameter simulator - Google Patents
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- CN102436183A CN102436183A CN2011102906977A CN201110290697A CN102436183A CN 102436183 A CN102436183 A CN 102436183A CN 2011102906977 A CN2011102906977 A CN 2011102906977A CN 201110290697 A CN201110290697 A CN 201110290697A CN 102436183 A CN102436183 A CN 102436183A
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Abstract
The invention relates to the technical field of air pressure test and simulation, in particular to an atmospheric parameter simulator. The invention aims to solve the problems of a pressure control mode based on a proportional valve, such as low response speed, high processing difficulty and the like. In order to fulfill the aim, the atmospheric parameter simulator comprises a main control module, a liquid crystal display module, a keyboard control module, a static pressure and total pressure control module and an air channel module, wherein the main control module is used for performing overriding control on the atmospheric parameter simulator; the liquid crystal display module is used for displaying system parameters and output results; the keyboard control module is used for inputting an operating instruction into a system through a keyboard so as to perform control; the static pressure and total pressure control module is used for controlling and measuring atmospheric parameters of a static pressure channel and a total pressure channel; and the air channel module is used for actually controlling and measuring the atmospheric parameters according to the instruction of the static pressure and total pressure control module. The atmospheric parameter simulator has the advantages of simple structure, low cost, high response speed and the like.
Description
Technical field
The present invention relates to air pressure test and analogue technique field, be specifically related to a kind of atmospheric parameter simulator.
Background technology
The atmospheric parameter simulator can provide the simulation such as atmospheric parameters such as static pressure, stagnation pressure, Mach number, air speeds for the aircraft of space flight and aviation field; Especially space industry is higher to the requirement of atmospheric parameter simulator, and it requires high precision air pressure control, response speed faster.Existing atmospheric parameter simulator mainly is based on the pneumatic control system of pressure servo valve/proportioning valve, and the advantage of this pneumatic control system is that apparatus structure is simple relatively, has control accuracy preferably; But the processing that corresponding shortcoming is a pressure servo valve is difficulty comparatively, and cost is very high, and is difficult to realize the control of elevated pressures, and response speed is slower.
Summary of the invention
The present invention is intended to solve the problems of the technologies described above, and promptly overcomes limitation such as, processing difficulties slow based on the pressure controling mode response speed of pressure servo valve/proportioning valve.For this purpose, the present invention provides a kind of atmospheric parameter simulator, and this atmospheric parameter simulator comprises: the main control module, and it is used for said atmospheric parameter simulator is carried out upper control; LCD MODULE, it is used for systematic parameter and output result's demonstration; The Keyboard Control module, it is used for instructing so that control to system's input operation through keyboard; Static pressure and stagnation pressure control module, it is used for the static pressure passage and the atmospheric parameter of total pressure passageway are controlled and measured; And gas path module, the control and the measurement of the actual execution of its instruction atmospheric parameter according to said static pressure and stagnation pressure control module; This atmospheric parameter simulator is characterised in that said gas path module utilizes high-speed switch electromagnetic valve to carry out the control of atmospheric parameter.
In a preferred embodiment, said gas path module comprises source of the gas, baroceptor, solenoid valve and gas channels, and said gas channels is used for the connection between said source of the gas, baroceptor, the solenoid valve.
In preferred embodiment; Said source of the gas comprises forcing pump and vacuum pump; Said baroceptor comprises static pressure control sensor and the static pressure master reference that is used for the static pressure passage and stagnation pressure master reference that is used for total pressure passageway and differential pressure control sensor, and said solenoid valve comprises first and second high-speed switch electromagnetic valves that are used for the static pressure passage and third and fourth high-speed switch electromagnetic valve that is used for total pressure passageway.
In preferred embodiment, said main control module comprise with the interface of said LCD MODULE, with the interface of said Keyboard Control module, with interface, IEEE488 interface, RS232 serial ports and the printer port of said static pressure and stagnation pressure control module; And the upper control of being carried out by said main control module comprises following: Keyboard Control, liquid crystal display, atmospheric parameter conversion, with communicating by letter of carrying out of static pressure and stagnation pressure control module and control, state demonstration, System self-test function, protection (ground connection etc.) function, leak gas measuring ability and fault diagnosis functions.
In preferred embodiment; Said static pressure and stagnation pressure control module are the circuit topworkies between said main control module and the said gas path module; The operation that said static pressure and stagnation pressure control module are carried out comprises following: and communicate between the said main control module; Be said main control module to the result of said static pressure and stagnation pressure control module transmitting control commands, data processing operation, and said static pressure and stagnation pressure control module are to said main control module transmit status monitor signal; Pressure survey, promptly master reference sends to the CPU of said static pressure and stagnation pressure control module with pressure measuring value, and the result after the CPU of said static pressure and stagnation pressure control module will convert sends to the CPU of said main control module; Pressure control, promptly said static pressure and stagnation pressure control module receive the pressure target value of said main control module settings, through carrying out pressure closed loop control, handle said gas path module and produce the required pressure environment.
In further preferred implementation, said LCD MODULE be used to show static pressure, stagnation pressure, dynamic pressure, static pressure rate of change, stagnation pressure rate of change, dynamic pressure rate of change, highly, Mach number, speed, altitude rate, percentage speed variation.
In further preferred implementation, said Keyboard Control module is used for state change and parameter input, and comprises parameter options button, function selecting key and parameter enter key.
The present invention is according to each item function under the field condition of pressure altimeter, Machmeter, airspeed indicator on aircraft flight track material object and HWIL simulation and the aircraft and the requirement of performance technologies index test; Fully the Sealing Technology and the atmospheric parameter model conversion of the technology of adjusting of fusion high precision air pressure control technology, PID closed-loop control parameter, high-speed electromagnetic valve driver circuit designing technique, air-channel system are technological; Realized atmospheric parameter simulation and measured to have that analog functuion is strong, adaptability is strong, characteristics such as easy for operation, highly versatile.The present invention satisfies each item function and the requirement of performance technologies index test under the field condition of pressure altimeter, Machmeter, airspeed indicator on aircraft flight track material object and HWIL simulation and the aircraft.
In brief, the control pressurer system based on high-speed switch electromagnetic valve according to the present invention has simple in structure, with low cost, reliable operation, is convenient to advantages such as computer control, the fine setting that can realize gas circuit and micro-control and response speed be fast.
Description of drawings
Describe preferred implementation of the present invention in conjunction with the drawings, those skilled in the art can understand the present invention more fully, in the accompanying drawing:
Fig. 1 is the theory diagram according to atmospheric parameter simulator of the present invention;
Fig. 2 is the theory diagram according to main control module of the present invention;
Fig. 3 is the theory diagram according to static pressure of the present invention and stagnation pressure control module;
Fig. 4 is the theory diagram according to gas path module of the present invention.
Embodiment
Description in the face of preferred implementation of the present invention only is exemplary in essence down, is not to be intended to limit invention, its application, or uses.Should be noted that; Although this preferred implementation has disclosed various concrete structure of the present invention and details; But those skilled in the art are understood that easily protection scope of the present invention is not limited to these structures and details, under the situation that does not depart from ultimate principle of the present invention; Those skilled in the art can make modification or be equal to replacement these structures and details, and the embodiment after revising or replacing also will fall within protection scope of the present invention.
Like what use among the application, term " module " means following: special IC (ASIC), electronic circuit, combinational logic circuit, field programmable gate array (FPGA), carry out coding processor (shared, special-purpose or in groups), other suitable parts of said function are provided; The perhaps combination of above-mentioned some or all parts.Term " module " can comprise storer (shared, special-purpose or in groups), the coding that said memory stores is carried out by processor.
At first consult Fig. 1, atmospheric parameter simulator according to the present invention comprises main control module, LCD MODULE, Keyboard Control module, static pressure and stagnation pressure control module and gas path module.The main control module is used to carry out upper control, and the operation of its execution includes but not limited to following: keyboard response control, data output show, atmospheric parameter is changed, communicated by letter so that the executive system centralized control with static pressure and stagnation pressure control module.Particularly, the main control module is to result of static pressure and stagnation pressure control module transmitting control commands, data processing operation etc., and static pressure and stagnation pressure control module are sent various status monitoring signals to the main control module.Only as an example; The apparent control interface of main control module is the human-computer interaction interface of exploitation under the WINCE interface; Accomplish setting of atmospheric parameter simulator parameter and state and show that through serial communication, agreement is RS232 between main control module and static pressure and the stagnation pressure control module; The core of static pressure and stagnation pressure control module is singlechip chip and fpga chip, to main control module transmit status monitor signal.
LCD MODULE is used for systematic parameter and output result's demonstration.The Keyboard Control module is used for instructing so that control to system's input operation through keyboard.
Static pressure and stagnation pressure control module are mainly used in to be controlled and measures the static pressure passage and the parameters such as air pressure of total pressure passageway; The concrete operations of its execution include but not limited to following: communicate with the main control module; As stated; The main control module is to the result of static pressure and stagnation pressure control module transmitting control commands, data processing operation, and static pressure and stagnation pressure control module are to main control module transmit status monitor signal; Carry out pressure survey, promptly master reference sends to the CPU of static pressure and stagnation pressure control module with pressure measuring value, and the result after the CPU of static pressure and stagnation pressure control module will convert sends to the CPU of main control module; Carry out pressure control, promptly receive the pressure target value of main control module settings,, handle air-channel system and produce the required pressure environment through carrying out pressure closed loop control.Here, although should be pointed out that among Fig. 1 static pressure control module and stagnation pressure control module are illustrated as standalone module, under the situation that does not depart from principle of the present invention, static pressure control module and stagnation pressure control module can be integrated in the units/modules.
In addition, gas path module is the pneumatic actuator that is used to carry out isoparametric control of air pressure and measurement, and its instruction according to static pressure and stagnation pressure control module produces required pressure environment.
Consult Fig. 2 now, as stated, the main control module mainly realizes the parsing and the processing of man-machine interface order are communicated with static pressure and stagnation pressure control module, and accomplishes the conversion of atmospheric parameter.As shown in Figure 2, the main control module comprises: with the interface of LCD MODULE; Interface with the Keyboard Control module; Interface with the static pressure control module; Interface with the stagnation pressure control module; The IEEE488 interface; RS232 serial ports and printer port etc.
The main control module mainly realizes following function: Keyboard Control; Liquid crystal display; From pressure to the height, the isoparametric conversion of Mach number; And communicate and control between static pressure and the stagnation pressure control module; State shows that for example the duty of solenoid valve shows; The System self-test function; Protection (ground connection etc.) function; The gas leakage measuring ability; Fault diagnosis functions etc.
LCD MODULE is used to show duty, the parameter of full machine, promptly show static pressure, stagnation pressure, dynamic pressure, static pressure rate of change, stagnation pressure rate of change, dynamic pressure rate of change, highly, Mach number, speed, altitude rate, percentage speed variation etc.
The Keyboard Control module is used for through keyboard system being carried out control operation, and the state that is mainly used in changes and the parameter input, and it comprises parameter options button, function selecting key and parameter enter key etc.
Next consult Fig. 3, static pressure and stagnation pressure control module have been shown among the figure, said module is the circuit topworks between main control module and the gas path module, and it mainly realizes following function: communicate with the main control module; Carry out pressure survey; Carry out pressure control.After static pressure and stagnation pressure control module received the target pressure value of Autonomous Control module, the control sensor was participated in loop control earlier, and it is with measured voltage values V
cTarget voltage values V with the CPU generation
rCompare its difference V
oBe admitted to the PID control loop, the PID departure and the triangular-wave generator that are produced compare, and comparative result is the pwm signal that drives high-speed electromagnetic valve, and this signal controlling high-speed electromagnetic valve charges and discharge gas.When controlled pressure during near desired value, master reference is participated in loop control.In this closed control circuit, key link is control, PID loop design and the PWM control of system accuracy and response time.
Consult Fig. 4 at last, gas path module has been shown among the figure, this gas path module is to be used for pneumatic actuator that parameters such as air pressure are controlled and measured, and it comprises: source of the gas, for example forcing pump and vacuum pump; Baroceptor, for example static pressure control sensor, static pressure master reference, stagnation pressure master reference and differential pressure control sensor; Solenoid valve, for example high-speed switch electromagnetic valve 1-4; And gas channels, the gas channels between for example above-mentioned each parts.Only as an example, the top pressure of pressure gas source-be forcing pump is 0.5Mpa (absolute pressure), and the vacuum tightness of vacuum source-be vacuum pump is 2.0kpa (absolute pressure); Solenoid valve is a direct-acting electromagnetic valve, and working pressure range is 2.0kpa-0.5Mpa (absolute pressure); Baroceptor requires: precision 0.01%FS, be output as digital quantity, and carry temperature compensation, air pressure range 3.5Kpa-135Kpa (static pressure), 3.5Kpa-350Kpa (stagnation pressure).
Specific to the static pressure passage, when working in control model following time, high-speed switch electromagnetic valve 1, high-speed switch electromagnetic valve 2 are used for the gas control system that charges and discharge of static pressure passage, static pressure control sensor and static pressure master reference measurement air-capacitor 1 (P
s) force value; Measurement result is admitted to the PID control loop; Produce pwm signal then, said pwm signal control high-speed switch electromagnetic valve 1 and 2 pairs of air-capacitors 1 are carried out dynamic pressure control, when the pressure control value is about near desired value, adopt the control sensor to reach the quick response of gas circuit; Get into gas circuit afterwards when stablizing, with master reference work to obtain to satisfy the control accuracy of index request.Similarly, when working in control model following time, high-speed switch electromagnetic valve 3, high-speed switch electromagnetic valve 4 are used for the gas control system that charges and discharge of total pressure passageway, total pressure-controlled sensor and stagnation pressure master reference measurement air-capacitor 2 (P
t) force value, measurement result is admitted to the PID control loop, produces pwm signal then, said pwm signal control high-speed switch electromagnetic valve 3 carries out dynamic pressure with 4 pairs of air-capacitors 2 and controls.
Although described technical scheme of the present invention with reference to preferred implementation; But those skilled in the art are understood that easily; Protection scope of the present invention is not limited to these embodiments; Under the situation that does not depart from ultimate principle of the present invention, can split, make up and change said embodiment and concrete technical characterictic wherein, the technical scheme after fractionation, combination and the change will fall within protection scope of the present invention.
Claims (7)
1. atmospheric parameter simulator comprises:
The main control module, it is used for said atmospheric parameter simulator is carried out upper control;
LCD MODULE, it is used for systematic parameter and output result's demonstration;
The Keyboard Control module, it is used for instructing so that control to system's input operation through keyboard;
Static pressure and stagnation pressure control module, it is used for the static pressure passage and the atmospheric parameter of total pressure passageway are controlled and measured; And
Gas path module, the control and the measurement of the actual execution of its instruction atmospheric parameter according to said static pressure and stagnation pressure control module;
It is characterized in that said gas path module utilizes high-speed switch electromagnetic valve to carry out the control of atmospheric parameter.
2. atmospheric parameter simulator as claimed in claim 1 is characterized in that said gas path module comprises source of the gas, baroceptor, solenoid valve and gas channels, and said gas channels is used for the connection between said source of the gas, baroceptor, the solenoid valve.
3. atmospheric parameter simulator as claimed in claim 2; It is characterized in that; Said source of the gas comprises forcing pump and vacuum pump; Said baroceptor comprises static pressure control sensor and the static pressure master reference that is used for the static pressure passage and stagnation pressure master reference that is used for total pressure passageway and differential pressure control sensor, and said solenoid valve comprises first and second high-speed switch electromagnetic valves that are used for the static pressure passage and third and fourth high-speed switch electromagnetic valve that is used for total pressure passageway.
4. atmospheric parameter simulator as claimed in claim 3; It is characterized in that, said main control module comprise with the interface of said LCD MODULE, with the interface of said Keyboard Control module, with interface, IEEE488 interface, RS232 serial ports and the printer port of said static pressure and stagnation pressure control module; And the upper control of being carried out by said main control module comprises following: Keyboard Control, liquid crystal display, atmospheric parameter conversion, with communicating by letter of carrying out of static pressure and stagnation pressure control module and control, state demonstration, System self-test function, protection (ground connection etc.) function, leak gas measuring ability and fault diagnosis functions.
5. atmospheric parameter simulator as claimed in claim 4; It is characterized in that; Said static pressure and stagnation pressure control module are the circuit topworkies between said main control module and the said gas path module; The operation that said static pressure and stagnation pressure control module are carried out comprises following: and communicate between the said main control module; Be said main control module to the result of said static pressure and stagnation pressure control module transmitting control commands, data processing operation, and said static pressure and stagnation pressure control module are to said main control module transmit status monitor signal; Pressure survey, promptly master reference sends to the CPU of said static pressure and stagnation pressure control module with pressure measuring value, and the result after the CPU of said static pressure and stagnation pressure control module will convert sends to the CPU of said main control module; Pressure control, promptly said static pressure and stagnation pressure control module receive the pressure target value of said main control module settings, through carrying out pressure closed loop control, handle said gas path module and produce the required pressure environment.
6. like each described atmospheric parameter simulator in the claim 1 to 5; It is characterized in that, said LCD MODULE be used to show static pressure, stagnation pressure, dynamic pressure, static pressure rate of change, stagnation pressure rate of change, dynamic pressure rate of change, highly, Mach number, speed, altitude rate, percentage speed variation.
7. like each described atmospheric parameter simulator in the claim 1 to 5, it is characterized in that said Keyboard Control module is used for state change and parameter input, and comprises parameter options button, function selecting key and parameter enter key.
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Cited By (9)
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| CN103645644A (en) * | 2013-11-28 | 2014-03-19 | 江西洪都航空工业集团有限责任公司 | Dynamic and static pressure correction method of altitude air pressure simulator in simulation |
| CN105547346A (en) * | 2016-02-18 | 2016-05-04 | 江西洪都航空工业集团有限责任公司 | Pressure altitude simulator |
| CN107525521A (en) * | 2017-09-07 | 2017-12-29 | 国营芜湖机械厂 | A kind of atmosphere data exciting bank |
| CN107883980A (en) * | 2017-10-27 | 2018-04-06 | 北京机电工程研究所 | Pressure altimeter base level dynamic testing method |
| CN108106810A (en) * | 2017-12-19 | 2018-06-01 | 北京航空航天大学 | A kind of flight atmospheric parameter calibration experiments device |
| CN110531639A (en) * | 2019-09-10 | 2019-12-03 | 象限空间（天津）科技有限公司 | A kind of pressure simulation device for low flyer |
| CN111608839A (en) * | 2020-06-16 | 2020-09-01 | 成都航利航空科技有限责任公司 | System and method for plateau starting of engine |
| CN112525152A (en) * | 2020-12-14 | 2021-03-19 | 北京空间机电研究所 | Quick response high accuracy atmospheric pressure altitude analog system |
| CN113867433A (en) * | 2021-11-09 | 2021-12-31 | 中国航空工业集团公司北京长城计量测试技术研究所 | Double-channel atmospheric parameter pressure control gas circuit and adjusting method |
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| CN103645644A (en) * | 2013-11-28 | 2014-03-19 | 江西洪都航空工业集团有限责任公司 | Dynamic and static pressure correction method of altitude air pressure simulator in simulation |
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| CN110531639A (en) * | 2019-09-10 | 2019-12-03 | 象限空间（天津）科技有限公司 | A kind of pressure simulation device for low flyer |
| CN111608839A (en) * | 2020-06-16 | 2020-09-01 | 成都航利航空科技有限责任公司 | System and method for plateau starting of engine |
| CN112525152A (en) * | 2020-12-14 | 2021-03-19 | 北京空间机电研究所 | Quick response high accuracy atmospheric pressure altitude analog system |
| CN113867433A (en) * | 2021-11-09 | 2021-12-31 | 中国航空工业集团公司北京长城计量测试技术研究所 | Double-channel atmospheric parameter pressure control gas circuit and adjusting method |
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Granted publication date: 20130925 |