| Sign In to gain access to subscriptions and/or personal tools. |
Integration across discontinuities in ordinary differential equations using power seriesETH (Swiss Federal Institute of Technology) Clausiusstrasse 33 CH-8092 Zürich, Switzerland Numerical integration of ordinary differential equa tions containing nonanalytical functions is error- prone and time-consuming. Because of this problem, the simulation of the hydraulic servo drive of a machine tool produced unsatisfactory results. How ever, applying power-series expansions provided fast and accurate solutions. Due to its pieceuise semi- analytic character, this method is particularly suited to handling discontinuities. Although it re quires the calculation of higher derivatives by means of recursion formulas, the power-series method can be completely automated. A simulation package for this purpose is currently under development. Two examples compare its performance with that of Runge-Kutta- Merson integration.
Key Words: digital simulation (continuous systems), mathematical techniques numerical inte gration
SIMULATION, Vol. 32, No. 2,
33-45 (1979) |
|||