CN105373656B - The analogy method of camshaft speed signal during two stroke diesel engine rapid prototyping - Google Patents
The analogy method of camshaft speed signal during two stroke diesel engine rapid prototyping Download PDFInfo
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- CN105373656B CN105373656B CN201510742782.0A CN201510742782A CN105373656B CN 105373656 B CN105373656 B CN 105373656B CN 201510742782 A CN201510742782 A CN 201510742782A CN 105373656 B CN105373656 B CN 105373656B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
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Abstract
The present invention provides a kind of analogy method of camshaft speed signal during two stroke diesel engine rapid prototyping, include the following steps:1) the speed of crankshaft signal of diesel engine is gathered by MicroAutoBox, camshaft speed signal imitation model is created by Simulink；2) after the calculating of camshaft speed signal imitation model, the camshaft speed signal output that simulation is exported by the hardware corridor of the DIO of MicroAutoBox gives RapidPro System；3) the speed of crankshaft signal and the camshaft speed signal of simulation that collect are synchronized by RapidPro System, then completes the output of jet drive electric current.The present invention has the advantage that：Can be on the premise of hardware not be increased, the simulation of camshaft speed signal is completed by the way of software calculating, and the input source and the final RapidPro System crankshaft signals to be synchronized of camshaft signal simulation are a signal sources, solves the problems, such as the time reference of synchronizing signal under the premise of additionally increase hardware；So as to reduce the cost of project development and shorten the construction cycle.
Description
Technical field
The invention belongs to Diesel Engine Technique Field, cam during more particularly, to a kind of two stroke diesel engine rapid prototyping
The analogy method of rotating speed signal.
Background technology
Increasing with diesel engine performance, no matter traditional development tool cannot on construction cycle or cost
Meet the requirements, it is necessary to using modern development process, the i.e. exploitation based on model.Exploitation based on model is a kind of software development
Method, advantage are：The algorithm and automatic code generating that can be run.An important link is exactly in development process based on model
Rapid control prototyping emulates.
In the prior art, commonly used analogue system is designed for the Development of ECU for Compressed of four-cycle diesel
, four-stroke engine has bent axle and camshaft speed signal, and analogue system, analogue system are entered after being gathered by sensor
Allow to carry out injection control after bent axle (crankshaft) and camshaft (camshaft) tach signal synchronization is completed.And two punchings
Journey diesel engine only has single rotating speed signal, can not directly provide camshaft signal and give rapid control prototyping analogue system.
In conclusion to make rapid control prototyping analogue system in modern development process be applicable to two stroke diesel engine
, it is necessary to simulate the method or apparatus that camshaft speed signal completes synchronization to analogue system in Development of ECU for Compressed, and current state
The method or apparatus of inside and outside not a kind of special camshaft speed signal that can simulate analogue system identification.
The content of the invention
In view of this, the present invention is directed to propose camshaft speed signal during a kind of two stroke diesel engine rapid prototyping
Analogy method, to simulate the camshaft speed signal that rapid control prototyping analogue system can identify, enables analogue system
Complete bent axle and the angle synchronization of camshaft speed signal and two stroke diesel engine injection control.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
The hardware platform of the method for the present invention uses the diesel engine rapid control prototyping analogue system of dSPACE companies, including
MicroAutoBox and RapidPro System components；MicroAutoBox is the calculating for various controlled quentity controlled variables, while also can
Enough gather tach signal (not requiring bent axle and camshaft synchronization) and output injection control waveform (does not drive the energy of fuel injector
Power), RapidPro System are for sensor signals such as collecting crankshaft rotating speed, camshaft speed, water temperature, pressure and carry out
Synchronous or conditioning, jet drive electric current output is carried out after receiving the control signal of MicroAutoBox computings.It is of the invention main former
Reason is realized using the output principle of injection control waveform in MicroAutoBox.
The analogy method of camshaft speed signal during two stroke diesel engine rapid prototyping of the present invention, including following step
Suddenly:
1) the speed of crankshaft signal of diesel engine is gathered by MicroAutoBox, camshaft speed is created by Simulink
Signal imitation model；
Wherein MicroAutoBox believes after collecting speed of crankshaft signal by crankshaft signal module output diesel engine speed
Number Spe；
The input terminal of the camshaft speed signal imitation model inputs the diesel engine speed signal Spe, and model passes through
Formula [Spe × a/6] calculates the value of b, and c is inputted as the injection advance angle of the real-time output modules of DIO of MicroAutoBox,
Inputted using b as the injection time of the real-time output modules of DIO；Wherein a is the crank shaft angle angle value (unit of the more tooth widths of camshaft：
OCA), b is the time value (unit of the more tooth widths of camshaft：S), c is the phase difference (unit of bent axle and camshaft：oCA)；
2) after the calculating of camshaft speed signal imitation model, the hardware corridor of the DIO of MicroAutoBox is passed through
The injection control waveform exported gives RapidPro System as the camshaft speed signal output of simulation；
3) the speed of crankshaft signal and the camshaft speed signal of simulation that collect are carried out by RapidPro System
It is synchronous, then complete the output of jet drive electric current.
Relative to the prior art, the present invention has the advantage that：
(1) mould of camshaft speed signal on the premise of hardware is not increased, can be completed by the way of software calculating
Intend, and the input source of camshaft signal simulation and the final RapidPro System crankshaft signals to be synchronized are one
Signal source, solves the problems, such as the time reference of synchronizing signal under the premise of additionally increase hardware；Simultaneously as be increased without hardware into
's advanced development system can originally applied in two stroke diesel engine exploitation, so as to reduce cost and the contracting of project development
The short construction cycle；
(2) the multiple tooth position of camshaft signal of simulation can be determined according to project demands, can be stood by software design patterns
Modification is completed, meets the needs of different model two stroke engine control.
Brief description of the drawings
The attached drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its explanation is used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
The simulation of camshaft speed signal when Fig. 1 is the two stroke diesel engine rapid prototyping described in the embodiment of the present invention
The functional block diagram of method；
Fig. 2 is the computing block diagram of the camshaft speed signal imitation model described in the embodiment of the present invention；
Fig. 3 is the Simulink illustratons of model of camshaft speed signal imitation model described in the embodiment of the present invention.
Embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Below with reference to the accompanying drawings and the present invention will be described in detail in conjunction with the embodiments.
The analogy method of camshaft speed signal during two stroke diesel engine rapid prototyping of the present invention, as shown in Figure 1, its
Middle hardware platform use dSPACE companies diesel engine rapid control prototyping analogue system, including MicroAutoBox and
RapidPro System components；This method includes the following steps：
Step 1, the speed of crankshaft signal of diesel engine is gathered by MicroAutoBox, passes through Matlab/ as shown in Figure 3
Simulink, which is patterned, creates camshaft speed signal imitation model；
Wherein MicroAutoBox believes after collecting speed of crankshaft signal by crankshaft signal module output diesel engine speed
Number Spe；
As shown in Fig. 2, the input terminal of the camshaft speed signal imitation model inputs the diesel engine speed signal
Spe, model calculate the value of b, sprays of the c as the real-time output modules of DIO of MicroAutoBox by formula [Spe × a/6]
Advance angle input is penetrated, is inputted using b as the injection time of the real-time output modules of DIO；Wherein a is the bent axle of the more tooth widths of camshaft
Angle value (unit：OCA), b is the time value (unit of the more tooth widths of camshaft：S), c is the phase difference (list of bent axle and camshaft
Position：oCA).
Step 2, after the calculating of camshaft speed signal imitation model, the hardware of the DIO of MicroAutoBox is passed through
The injection control waveform that passage exports gives RapidPro System as the camshaft speed signal output of simulation；
Step 3, by RapidPro System to the speed of crankshaft signal collected and the camshaft speed signal of simulation
Synchronize, then complete the output of jet drive electric current.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.
Claims (1)
1. the analogy method of camshaft speed signal during two stroke diesel engine rapid prototyping, it is characterised in that：Hardware platform
Use the diesel engine rapid control prototyping analogue system of dSPACE companies, including MicroAutoBox and RapidPro System
Component；This method includes the following steps：
1) the speed of crankshaft signal of diesel engine is gathered by MicroAutoBox, camshaft speed signal is created by Simulink
Simulation model；
Wherein MicroAutoBox is collected and is exported diesel engine speed signal by crankshaft signal module after speed of crankshaft signal
Spe；
The input terminal of the camshaft speed signal imitation model inputs the diesel engine speed signal Spe, and model passes through formula
[Spe × a/6] calculates the value of b, and c is inputted as the injection advance angle of the real-time output modules of DIO of MicroAutoBox, b
Injection time as the real-time output modules of DIO inputs；Wherein a is the crank shaft angle angle value of the more tooth widths of camshaft, b is camshaft
The time value of more tooth widths, the phase difference that c is bent axle and camshaft；
2) after the calculating of camshaft speed signal imitation model, exported by the hardware corridor of the DIO of MicroAutoBox
Injection control waveform as simulation camshaft speed signal output give RapidPro System；
3) the speed of crankshaft signal and the camshaft speed signal of simulation that collect are carried out by RapidPro System same
Step, then completes the output of jet drive electric current.
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| CN201510742782.0A CN105373656B (en) | 2015-11-04 | 2015-11-04 | The analogy method of camshaft speed signal during two stroke diesel engine rapid prototyping |
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| CN201510742782.0A CN105373656B (en) | 2015-11-04 | 2015-11-04 | The analogy method of camshaft speed signal during two stroke diesel engine rapid prototyping |
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| CN105373656B true CN105373656B (en) | 2018-05-11 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871843A (en) * | 2010-05-31 | 2010-10-27 | 浙江大学 | Crankshaft and camshaft analog signal generating method and device thereof |
| CN102540906A (en) * | 2012-02-17 | 2012-07-04 | 浙江大学 | Field programmable gate array (FPGA)-based device and method for generating analog signals of crankshaft and camshaft |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005026040B4 (en) * | 2005-06-03 | 2014-11-06 | Dspace Digital Signal Processing And Control Engineering Gmbh | Parameterization of a simulation working model |
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2015
- 2015-11-04 CN CN201510742782.0A patent/CN105373656B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871843A (en) * | 2010-05-31 | 2010-10-27 | 浙江大学 | Crankshaft and camshaft analog signal generating method and device thereof |
| CN102540906A (en) * | 2012-02-17 | 2012-07-04 | 浙江大学 | Field programmable gate array (FPGA)-based device and method for generating analog signals of crankshaft and camshaft |
Non-Patent Citations (3)
| Title |
|---|
| 发动机控制中同步信号获取方法;白思春;《车用发动机》;20141231(第6期);第33-38页 * |
| 快速控制原型技术在水平对置二行程柴油机上的应用;褚全红;《车用发动机》;20111231(第6期);第42-46页 * |
| 用于燃料电池系统控制的快速控制原型ECU的研发;刘原;《汽车工程》;20150131;第27卷(第1期);第7-10、39页 * |
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