Nonlinear, multi-chamber and series-parallel euler fixed-step-size simulation method

A technology of multi-cabin hybrid connection and simulation method, which is applied in the directions of instruments, simulators, control/regulation systems, etc., can solve the problems of inapplicability of the simulation method and the inability to guarantee the real-time simulation performance, and achieves a solution that reduces rigidity and ensures system stability. Effect

Active Publication Date: 2015-07-01
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

However, the variable step size 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

Method used

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  • Nonlinear, multi-chamber and series-parallel euler fixed-step-size simulation method
  • Nonlinear, multi-chamber and series-parallel euler fixed-step-size simulation method
  • Nonlinear, multi-chamber and series-parallel euler fixed-step-size simulation method

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Embodiment Construction

[0016] specific implementation plan

[0017] The technical solutions according to the embodiments of the present invention are described in detail below.

[0018] Taking the mixed connection of four compartments as an example, the system model is as follows figure 1 As shown, the simulation model is established according to the system model, such as Figure 6 step (601).

[0019] First, the relationship between pressure and flow is as (1)

[0020] w 11 2 = v 11 = G 11 ( P 5 - P 1 ...

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Abstract

The invention provides a nonlinear, multi-chamber and series-parallel euler fixed-step-size simulation method. The method is characterized by comprising the steps of removing a bad algebraic loop of a linear system, namely adding virtual integral to convert an algebraic equation model with the bad algebraic loop into a differential equation model; adjusting the virtual integral parameters to reduce the rigidity of the system; returning the linear system into a nonlinear system. The method can ensure the system stability and enable steady oscillation in euler fixed-step-size simulation.

Description

technical field [0001] The invention relates to multi-chamber 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-chamber hybrid connection, there are two types of simulation methods, fixed step size and variable step size. Among them, the variable step size simulation results are generally stable and close to the actual situation. However, the variable step size 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. Contents of the invention [0003] In view of the above problems, the inventor chose to use the fixed-step simulation method to simulate the multi-chamber hybrid connection. Amo...

Claims

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Application Information

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IPC IPC(8): G05B17/02
Inventor 曲洪权王天琦郑彤方昌勋毕福昆
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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