Many object-oriented models containing switches require a change in the selection of state variables as a function of the switch position. Such systems are classified as variable-structure systems. Their simulation leads to a division by zero at switching time.
Until now, such systems were usually simulated using non-ideal switches. However, this approach invariably leads to stiff models. Also, the simulation results obtained in this fashion may be too inaccurate.
This paper proposes a different approach, involving inline integration, that tackles the problem without requiring the introduction of spurious components.
Interested in reading the
full paper?
(6 pages, 236,545 bytes, pdf)
Interested in viewing the
Powerpoint presentation?