Improved precise integration method for differential Riccati equation.
- Resource Type
- Article
- Authors
- Gao, Qiang; Tan, Shu-jun; Zhong, Wan-xie; Zhang, Hong-wu
- Source
- Applied Mathematics & Mechanics. Jan2013, Vol. 34 Issue 1, p1-14. 14p.
- Subject
- *INTEGRALS
*NUMERICAL solutions to differential equations
*NUMERICAL solutions to Riccati equation
*EXPONENTIAL functions
*HAMILTONIAN systems
*MATRICES (Mathematics)
*ERROR analysis in mathematics
- Language
- ISSN
- 0253-4827
An improved precise integration method (IPIM) for solving the differential Riccati equation (DRE) is presented. The solution to the DRE is connected with the exponential of a Hamiltonian matrix, and the precise integration method (PIM) for solving the DRE is connected with the scaling and squaring method for computing the exponential of a matrix. The error analysis of the scaling and squaring method for the exponential of a matrix is applied to the PIM of the DRE. Based on the error analysis, the criterion for choosing two parameters of the PIM is given. Three kinds of IPIMs for solving the DRE are proposed. The numerical examples show that the IPIM is stable and gives the machine accuracy solutions. [ABSTRACT FROM AUTHOR]