A Simulating Method of Initial Engagement Surge Voltage of Engine Starting
A technology for engine starting and surge voltage, applied in the direction of measuring electricity, measuring electrical variables, instruments, etc., can solve problems such as poor consistency, large differences, and failure to meet verification requirements, and achieve the effect of simple model structure and easy realization
Active Publication Date: 2019-04-05
CHINA NORTH ENGINE INST TIANJIN
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Problems solved by technology
Compared with the surge voltage in the actual environment, the change rate of manual adjustment is quite different, and the consistency is poor, which cannot meet the actual test verification requirements.
Method used
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[0034] 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.
[0035] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0036] A method for simulating the initial engagement surge voltage of an engine, comprising the following steps:
[0037] 1) Determine the relevant parameters of the initial engagement surge voltage of the engine starting, such as figure 1 As shown, for example, the parameters of this embodiment include a steady-state voltage of 24V, an initial meshing surge voltage of 6V, an initial meshing surge voltage duration of 1s, a starting voltage value of 16V, and a starting duration of 5s;
[0038] 2) With the dSPACE test system as the operating platform, under the Matlab Simulink environment, such as figure 2 As shown, design each module of the power supply model: start switch acquisition...
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The present invention provides an engine start initial engaging surge voltage simulation method. The diesel engine hardware-in-loop test system of the dSPACE company is taken as a platform, a power model is designed in the Matlab Simulink environment, and the model is downloaded to the dSPACE diesel engine hardware-in-loop test system so as to realize that the model drives the test system and output the initial engaging surge voltage. Compared to the prior art, the engine start initial engaging surge voltage simulation method is simple in model structure and easy to realize, can simulate the start surge voltage in the true environment, and is suitable for the test verification of the early-phase design phase; and moreover, the engine start initial engaging surge voltage simulation method has the expandability and can satisfy the different requirements for the surge voltage amplitudes and the rates of change under different loads through correction of the model and the corresponding parameters.
Description
technical field [0001] The invention belongs to the technical field of diesel engine electronic control systems, and in particular relates to a simulation method for initial meshing surge voltage at engine start. Background technique [0002] The steady-state operating voltage of the engine is generally 16V-32V. During the starting process of the diesel engine, due to the starter motor and sudden load, there will be a short-term surge voltage, that is, the power supply voltage will suddenly drop to about 6V, and then in a short time Back to normal again. In order to avoid engine starting failure due to the influence of surge voltage, it is necessary to simulate the starting surge voltage in the test environment to fully test and verify the design circuit of the electronic control system to ensure the rationality and effectiveness of the circuit design. [0003] At present, laboratories mostly use regulated power supplies with adjustable range, and simulate sudden increases ...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 申晓彦阴晋冠龚思扬郭佳旭肖维杨薇曹春芳姚素娟杨国华
Owner CHINA NORTH ENGINE INST TIANJIN