Simulation method of nonlinear multi-compartment hybrid Euler fixed step size

A multi-chamber mixed-connection and simulation method technology, which is applied in the direction of instruments, simulators, control/regulation systems, etc., can solve the problems that the simulation method is not applicable and cannot guarantee the real-time performance of the simulation, so as to reduce the rigidity and ensure the stability of the system Effect
CN104749965BActive Publication Date: 2018-06-19NORTH CHINA UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTH CHINA UNIVERSITY OF TECHNOLOGY
Publication Date
2018-06-19

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Abstract

The invention provides a modeling method for multi-chamber hybrid Euler fixed-step simulation. It is characterized in that it includes: the removal of the ill-conditioned algebraic loop of the linear system, that is, adding a virtual integral, so that the algebraic equation model with the ill-conditioned algebraic loop is converted into a differential equation model; adjusting the parameters of the virtual integral can reduce the rigidity of the system; and then the linear system Reverting to a nonlinear system, in order to ensure the stability of the system, a method to solve the steady-state oscillation simulation with Euler's fixed step size is proposed.
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Description

technical field

[0001] The invention relates to the multi-cabin hybrid simulation, analyzes the problems in the simulation, designs a new simulation method, and ensures that the multi-cabin hybrid Euler fixed-step simulation is close to the actual situation, which is of great significance. Background technique

[0002] For the simulation of multi-cabin hybrid, there are two types of simulation methods: fixed-step and variable-step. Among them, the simulation results of variable step size are generally stable and close to the actual situation. However, the variable-step simulation cannot guarantee the real-time performance of the simulation, and when the system needs to perform semi-physical simulation, that is, real-time simulation, this simulation method is not applicable. SUMMARY OF THE INVENTION

[0003] In view of the above problems, the inventor chooses to use a fixed-step simulation method to simulate the multi-cabin hybrid connection. Among them, Euler's method is...

Claims

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