Stability of Stochastic Logistic Model with Ornstein-Uhlenbeck Process for Cell Growth of Microorganism in Fermentation Process

• 作者: Tawfiqullah Ayoubi
• 来源期刊: 应用数学(英文)
• 学科: 数学
• 关键词: STABILITY FERMENTATION PROCESS ORNSTEIN-UHLENBECK PROCESS Logistic Model Lyapunov Function 4-Stage Stochastic RUNGE-KUTTA Method
• 年，卷（期）: 2019,（8）
• 页码范围: 659-675
• 页数: 17页
• 分类号: O1

摘要

Current research is concerned with the stability of stochastic logistic equation with Ornstein-Uhlenbeck process. First, this research proves that the stochastic logistic model with Ornstein-Uhlenbeck process has a positive solution. After that, it also introduces the sufficient conditions for stochastically stability of stochastic logistic model for cell growth of microorganism in fermentation process for positive equilibrium point by using Lyapunov function. In addition, this research establishes the sufficient conditions for zero solution as mentioned in Appendix A due to the cell growth of microorganism μmax, which cannot be negative in fermentation process. Furthermore, for numerical simulation, current research uses the 4-stage stochastic Runge-Kutta (SRK4) method to show the reality of the results.