CN109139300A - Flow adjustable gas generator simulation system based on DSP and ARM - Google Patents
Flow adjustable gas generator simulation system based on DSP and ARM Download PDFInfo
- Publication number
- CN109139300A CN109139300A CN201810994692.4A CN201810994692A CN109139300A CN 109139300 A CN109139300 A CN 109139300A CN 201810994692 A CN201810994692 A CN 201810994692A CN 109139300 A CN109139300 A CN 109139300A
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- Prior art keywords
- pressure
- gas generator
- interface
- dsp
- pid control
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/96—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof characterised by specially adapted arrangements for testing or measuring
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feedback Control In General (AREA)
Abstract
The flow adjustable gas generator simulation system based on DSP and ARM that the present invention provides a kind of, including flow adjustable gas generator simulator, master system, feedforward pid control module, brushless dc motor servo system；Flow adjustable gas generator simulator is carried out the simulation of engine pressure control process by master system by required pressure instruction, the opening degree instruction of feedforward pid control module output valve body simultaneously passes to brushless dc motor servo system, brushless dc motor servo system controls the executing agency of brshless DC motor by instruction, to change the aperture of flow control valve.
Description
Technical field
The present invention relates to a kind of gas generator control technology, especially a kind of flow adjustable gas based on DSP and ARM
Generator simulation system.
Background technique
Solid rocket ramjet have many advantages, such as structure it is simple, than leaping high, easy to maintain and reliability it is good, at
In order to which the power device of high-performance guided missile system head of new generation is selected.The gas flow control of its gas generator (is pressed by control
Gas flow is indirectly controlled by force) it can effectively change the thrust of engine and stablize air-fuel ratio within a certain range, it protects
There is good thrust regulating power again while demonstrate,proving engine high-efficiency, trouble free service.
The most key technology of gas flow regulating system is the control of gas generator pressure, and the simulation test controlled
It is most important and effective verifying means.And just from the point of view of current present Research, it is most of be all carry out fire trial carry out by
It walks modified.A large amount of test consumes a large amount of propellant and makes that research cost is higher, research cycle is longer or even it is certain to have
Risk, therefore be not optimal scheme.
Summary of the invention
The flow adjustable gas generator simulation system based on DSP and ARM that the purpose of the present invention is to provide a kind of, can
R&D cycle and the cost of the control of Ducted rocket gas generator pressure is effectively reduced, improves success of the test rate, for expansion combustion
The verification test of gas generator pressure control provides reliable hardware platform.
Realize the technical solution of the object of the invention are as follows: a kind of flow adjustable gas generator simulation system based on DSP and ARM
System, including flow adjustable gas generator simulator, master system, feedforward pid control module, brshless DC motor servo system
System；Flow adjustable gas generator simulator carries out engine pressure by required pressure instruction by master system and controlled
The simulation of journey, the opening degree instruction of feedforward pid control module output valve body simultaneously passes to brushless dc motor servo system, brushless straight
Galvanic electricity machine servo system controls the executing agency of brshless DC motor by instruction, to change the aperture of flow control valve.
Using above system, flow adjustable gas generator simulator includes arm processor, dsp processor, conditioning electricity
Road extends out Flash and debugging interface, ADC analog/digital conversion module built in the arm processor, DAC D A switch module,
SCI1 and SCI2 dual serial communication interface, the dsp processor built-in motor inner trajectory solver, SCIA, SCIB two
A serial communication interface and SPI Serial Peripheral Interface (SPI), valve body aperture θ is after conditioning circuit filtering and enhanced processing, by ADC
Analog/digital conversion module acquires and passes through the transmission of SCI2 serial ports and SCIB serial ports receive capabilities pass to dsp processor and participate in interior bullet
Road quickly resolves, the pressure values p that DSP is resolvedrIt is sent to master system through SCIA interface to be shown and saved, simultaneously
It is sent also by SCIB serial ports and SCI2 serial ports receive capabilities passes to arm processor and carry out subsequent processing；It is described to extend out Flash
Be used to storage and reading to engine parameter by SPI interface, realize that power down saves function, the debugging interface for realizing
Debugging to dsp processor.
Using above system, the master system provides human-computer interaction interface, can show to inner trajectory pressure curve
Show, while pressure command signal p can be arranged in user as requiredi, which is sent to arm processor by SCI1 and carries out subsequent place
Reason.
Using above system, the feedforward pid control module built-in feed forward pid control algorithm, there are two inputs one for tool
Output；Two of them input is the two-way output of the DAC module of arm processor, is pressure command signal p respectivelyiWith practical pressure
Strong prCorresponding voltage value Upi、Upr。
Using above system, the brushless dc motor servo system is by brshless DC motor servo-drive plate and brushless straight
Flow electric machine actuating mechanism composition；The valve body aperture that brshless DC motor servo-drive plate receives feedforward pid control module output refers to
It enables, and BLDCM executing agency is controlled by instruction, to change the aperture of flow control valve, then change gas generator
Pressure, to realize the in-kind simulation to gas flow regulating system.
Compared with prior art, the present invention have the advantage that (1) replaces engine entity using electronic hardware system,
It can be effectively reduced the research cost of gas generator pressure control；(2) debugging control algorithm is more convenient compared with fire trial,
It is repeatable high, shorten the R&D cycle；(3) conventional method for having evaded a large amount of fire trial summary datas to debug, no danger
It is dangerous, it provides fundamental basis for subsequent fire trial, improves the success rate of test.
The invention will be further described with reference to the accompanying drawings of the specification.
Detailed description of the invention
Fig. 1 is the overall structure figure of present system.
Fig. 2 is the schematic diagram of feedforward pid control algorithm in the present invention.
Specific embodiment
In conjunction with Fig. 1, Fig. 2, a kind of flow adjustable gas generator simulation system based on DSP+ARM, including flow are adjustable
Gas generator simulator 1, master system 2, feedover pid control module 3, brshless DC motor (BLDCM) servo-system 4.
The flow adjustable gas generator simulator 1 can carry out engine by required pressure instruction by the master system 2
The simulation of pressure control process, to complete the analog simulation to actual engine ignition testing pressure closed loop control process.
The flow adjustable gas generator simulator 1 extends out Flash by arm processor, dsp processor, conditioning circuit
It is formed with debugging interface.ADC analog/digital conversion module, DAC D A switch module, SCI1 and SCI2 are serial built in arm processor
Communication interface.Dsp processor built-in motor inner trajectory solver, SCIA, SCIB dual serial communication interface and SPI are serial
Peripheral Interface.SCIB with the SCI2 interface is connected, for realizing the full-duplex communication of arm processor and dsp processor.It is described
SCIA interface for realizing dsp processor and master system 2 communication.The SCI1 interface for realizing arm processor and
The communication of master system 2.The conditioning circuit is used to be filtered the valve opening signal of feedback and enhanced processing, extracts
More clean signal.The ADC analog/digital conversion module is used for the signal of acquisition and conditioning circuit output.The Flash that extends out leads to
SPI interface is crossed for the storage and reading to engine parameter, realizes that power down saves function.The debugging interface is for realizing right
The debugging of dsp processor.
The master system 2 provides human-computer interaction interface, can show to inner trajectory pressure curve, while user can
Pressure command signal p is set as requiredi, the signal by SCI1 be sent to arm processor carry out subsequent processing.
The 3 built-in feed forward pid control algorithm of feedforward pid control module, there are two one outputs of input for tool.Two inputs
It is pressure command signal p respectively for the two-way output of the DAC module of arm processoriWith actual pressure prCorresponding voltage value
Upi、Upr, the opening degree instruction of valve body is exported by feedforward pid control algorithm and passes to BLDCM servo-system 4.
The BLDCM servo-system 4 is made of BLDCM servo-drive plate and BLDCM executing agency.BLDCM servo-drive
Plate receives the valve body opening degree instruction that feedforward pid control module 3 exports, and controls by instruction BLDCM executing agency, to change
The aperture of changeable flow adjustment valve then changes gas generator pressure, to realize the natural pattern to gas flow regulating system
It is quasi-.
Specific work process of the invention:
Ignition signal enabled first, triggering system work.Then it is passed at DSP after arm processor acquisition valve body position
Device is managed, dsp processor resolves inner trajectory according to the initial position of valve body, to simulate the establishment process of equilibrium pressure, and by pressure
Numerical value passes through SCIA interface respectively and is sent to host computer, sends simultaneously also by SCIB serial ports and SCI2 serial ports receive capabilities are transmitted
To arm processor.
Pressure instruction is sent by the human-computer interaction interface that master system 2 provides, arm processor is connect by SCI1 interface
Receive instruction.Pressure instruction value and actual pressure value are converted into voltage analog signal by the two-way DAC module of arm processor, and are passed
Pass feedforward pid control module 3.
Feedover pid algorithm such as Fig. 2, and feedforward term is that theoretical angle value θ is calculated by pressure instruction value2, and PID control
The input of device is pressure command signal piWith actual pressure prCorresponding voltage value Upi、Upr, output θ is calculated1For correcting
The residual deviation of pressure, θ=θ1+θ2It is instructed as output angle, and passes to BLDCM servo-system 4.
BLDCM servo-drive plate receives the instruction of feedforward pid control module 3 and BLDCM executing agency is driven to move, and changes
The corner of valve body, to change gas generator pressure.It repeats the above process until pressure reaches instruction value, combustion gas occurs for completion
The in-kind simulation to gas flow regulating system is realized in the control of device pressure.
Claims (5)
1. a kind of flow adjustable gas generator simulation system based on DSP and ARM, which is characterized in that including the adjustable combustion of flow
Gas generator simulator (1), master system (2), feedforward pid control module (3), brushless dc motor servo system (4)；
Flow adjustable gas generator simulator (1) carries out engine pressure by required pressure instruction by master system (2)
The simulation of strong control process,
The opening degree instruction of feedforward pid control module (3) output valve body simultaneously passes to brushless dc motor servo system (4),
Brushless dc motor servo system (4) controls the executing agency of brshless DC motor by instruction, to change flow
The aperture of regulating valve.
2. system according to claim 1, which is characterized in that flow adjustable gas generator simulator (1) includes at ARM
Reason device, conditioning circuit, extends out Flash and debugging interface at dsp processor,
ADC analog/digital conversion module, DAC D A switch module, the communication of SCI1 and SCI2 dual serial built in the arm processor
Interface,
The dsp processor built-in motor inner trajectory solver, SCIA, SCIB dual serial communication interface and SPI are serial
Peripheral Interface,
Valve body aperture θ is acquired by ADC analog/digital conversion module after conditioning circuit filtering and enhanced processing and is passed through SCI2
Serial ports is sent and SCIB serial ports receive capabilities pass to dsp processor participation inner trajectory and quickly resolve, the pressure that DSP is resolved
Value prMaster system is sent to through SCIA interface to be shown and saved, and is sent and SCI2 serial ports simultaneously also by SCIB serial ports
Receive capabilities pass to arm processor and carry out subsequent processing；
It is described to extend out Flash by SPI interface for the storage and reading to engine parameter, realize that power down saves function,
The debugging interface is for realizing the debugging to dsp processor.
3. system according to claim 2, which is characterized in that the master system (2) provides human-computer interaction interface, can
Inner trajectory pressure curve is shown, while pressure command signal p can be arranged in user as requiredi, the signal pass through SCI1 send out
It gives arm processor and carries out subsequent processing.
4. feedforward pid control module according to claim 2, which is characterized in that in the feedforward pid control module (3)
Feedforward pid control algorithm is set, there are two one outputs of input for tool；Wherein
Two inputs are the two-way output of the DAC module of arm processor, are pressure command signal p respectivelyiWith actual pressure prIt is right
The voltage value U answeredpi、Upr,
According to pressure command signal piCorresponding voltage value UpiTheoretical angle value θ is calculated2,
Pressure command signal piWith actual pressure prCorresponding voltage value Upi、Uprθ is calculated1,
One output θ=θ1+θ2。
5. system according to claim 1, which is characterized in that the brushless dc motor servo system (4) is by brushless straight
Galvanic electricity machine servo-drive plate and brshless DC motor executing agency composition；
Brshless DC motor servo-drive plate receives the valve body opening degree instruction of feedforward pid control module (3) output, and by instruction pair
BLDCM executing agency is controlled, and to change the aperture of flow control valve, then changes gas generator pressure, to realize
To the in-kind simulation of gas flow regulating system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810994692.4A CN109139300A (en) | 2018-08-29 | 2018-08-29 | Flow adjustable gas generator simulation system based on DSP and ARM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810994692.4A CN109139300A (en) | 2018-08-29 | 2018-08-29 | Flow adjustable gas generator simulation system based on DSP and ARM |
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| Publication Number | Publication Date |
|---|---|
| CN109139300A true CN109139300A (en) | 2019-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810994692.4A Pending CN109139300A (en) | 2018-08-29 | 2018-08-29 | Flow adjustable gas generator simulation system based on DSP and ARM |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6101957A (en) * | 1998-05-26 | 2000-08-15 | The United States Of America As Represented By The Secretary Of The Navy | Apparatus for after-burning fuel rich rocket exhaust products |
| KR20130072726A (en) * | 2011-12-22 | 2013-07-02 | 한국항공우주연구원 | Afterburning device for unburned mixtures from a gas generator |
| CN105606368A (en) * | 2016-02-03 | 2016-05-25 | 中国空空导弹研究院 | Solid rocket engine gas flow adjustment cold-flow and hot-flow ground test systems |
-
2018
- 2018-08-29 CN CN201810994692.4A patent/CN109139300A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6101957A (en) * | 1998-05-26 | 2000-08-15 | The United States Of America As Represented By The Secretary Of The Navy | Apparatus for after-burning fuel rich rocket exhaust products |
| KR20130072726A (en) * | 2011-12-22 | 2013-07-02 | 한국항공우주연구원 | Afterburning device for unburned mixtures from a gas generator |
| CN105606368A (en) * | 2016-02-03 | 2016-05-25 | 中国空空导弹研究院 | Solid rocket engine gas flow adjustment cold-flow and hot-flow ground test systems |
Non-Patent Citations (1)
| Title |
|---|
| 李毅等: ""某发动机模拟装置在半实物仿真中的应用"", 《航空兵器》 * |
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Application publication date: 20190104 |
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