Journal of System Simulation ›› 2021, Vol. 33 ›› Issue (1): 46-53.doi: 10.16182/j.issn1004731x.joss.19-0172

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A Quantization-based Integration Method for Stiff Ordinary Differential Equations

Li Zhihua, Jiang De, Wu Chenjia, Fan Zhihua   

  1. School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
  • Received:2019-04-23 Revised:2019-08-09 Published:2021-01-18

Abstract: QSS(Quantized State System) has advantages over the traditional time-discrete integration methods in solving general ordinary differential equation (ODE) systems, but it is not suitable for solving the stiff ODE systems. To effectively solve the stiff ODE systems, a step-correction optimization algorithm based on QSS (SCOA based-on QSS) is proposed, which combines the ideas of the QSS method and the implicit trapezoidal integral method. The simulation results of three typical stiff ODE cases show that the SCOA based-on QSS algorithm has advantages over other algorithms, and the simulation accuracy can be significantly improved by appropriately reducing the quantum size.

Key words: ordinary differential equation, stiff system, quantized state system, numerical integration, simulation

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