Simulation method for cam shaft speed signal during fast prototype simulation of two-stroke diesel engine
A speed signal, diesel engine technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem that the camshaft signal cannot be directly provided
Active Publication Date: 2016-03-02
CHINA NORTH ENGINE INST TIANJIN
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Problems solved by technology
The two-stroke diesel engine only has a single crankshaft speed signal, and cannot directly provide the camshaft signal to the rapid control prototype simulation system
[0004] To sum up, in order to apply the rapid control prototype simulation system in the modern development process to the development of the electronic control unit of the two-stroke diesel engine, it is necessary to simulate the method or device for synchronizing the camshaft speed signal to the simulation system, but there is no such method at home and abroad A special method or device capable of simulating the camshaft speed signal identified by the simulation system
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[0021] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0022] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0023] The simulation method of the camshaft speed signal during the two-stroke diesel engine rapid prototype simulation of the present invention, such as figure 1 As shown, wherein the hardware platform uses the diesel engine rapid control prototype simulation system of dSPACE Company, including MicroAutoBox and RapidProSystem components; this method includes the following steps:
[0024] Step 1, collect the crankshaft speed signal of the diesel engine through MicroAutoBox, through such as image 3 The shown Matlab / Simulink graphically creates the camshaft speed signal simulation model;
[0025] Among them, MicroAutoBox outputs the diesel engine speed signal Spe through the crankshaft...
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The invention provides a simulation method for a cam shaft speed signal during fast prototype simulation of a two-stroke diesel engine. The method comprises the following steps: 1) acquiring a crankshaft speed signal of the diesel engine through MicroAutoBox, and creating a cam shaft speed signal simulation model through Simulink; 2) outputting a simulated cam shaft speed signal to a RapidPro System through a hardware channel of DIO of the MicroAutoBox after calculation of the cam shaft speed signal simulation model; and 3) synchronizing the acquired cam shaft speed signal and the simulated cam shaft speed signal through the RapidPro System, and outputting a jet driving current. The method has the following advantages: the cam shaft speed signal can be simulated in a software computing mode on the premise of not adding hardware, and an input source of cam shaft signal simulation is the same as a crankshaft signal to be synchronized by the RapidPro System finally, so that the problem in time reference of signal synchronization on the premise of additionally adding the hardware is solved, the cost of project development is reduced, and the development cycle is shortened.
Description
technical field [0001] The invention belongs to the technical field of diesel engines, in particular to a method for simulating a camshaft rotational speed signal during rapid prototype simulation of a two-stroke diesel engine. Background technique [0002] With the increasing performance of diesel engines, the traditional development methods can no longer meet the requirements in terms of development cycle and cost, and a modern development process must be adopted, that is, model-based development. Model-based development is a method of software development with the advantages of runnable algorithms and automatic code generation. An important part of the model-based development process is rapid control prototyping simulation. [0003] In the prior art, the commonly used simulation systems are all designed for the development of the electronic control unit of the four-stroke diesel engine. The four-stroke engine has crankshaft and camshaft speed signals, which are collected...
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IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 贾利褚全红孟长江刘涛张春况涪洪李菲菲申晓彦
Owner CHINA NORTH ENGINE INST TIANJIN