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------------------------------------------------------------ | LTRA - instance parameters (input-only) | |-----------------------------------------------------------+ | ic Initial condition vector:v1,i1,v2,i2 | ------------------------------------------------------------ ------------------------------------------------------------ | LTRA - instance parameters (input-output) | |-----------------------------------------------------------+ | v1 Initial voltage at end 1 | | v2 Initial voltage at end 2 | | i1 Initial current at end 1 | | i2 Initial current at end 2 | ------------------------------------------------------------ ------------------------------------------------------------ | LTRA - instance parameters (output-only) | |-----------------------------------------------------------+ | pos_node1 Positive node of end 1 of t-line | | neg_node1 Negative node of end 1 of t.line | | pos_node2 Positive node of end 2 of t-line | | neg_node2 Negative node of end 2 of t-line | ------------------------------------------------------------ ------------------------------------------------------------ | LTRA - model parameters (input-output) | |-----------------------------------------------------------+ |ltra LTRA model | |r Resistance per metre | |l Inductance per metre | |g (null) | ------------------------------------------------------------ |c Capacitance per metre | |len length of line | |nocontrol No timestep control | |steplimit always limit timestep to 0.8*(delay of line) | continued | ------------------------------------------------------------ --------------------------------------------------------------------- | LTRA - model input-output parameters - continued | |---------------------------------------------------------------------+ |nosteplimit don't always limit timestep to 0.8*(delay of line) | |lininterp use linear interpolation | |quadinterp use quadratic interpolation | |mixedinterp use linear interpolation if quadratic results | | look unacceptable | --------------------------------------------------------------------- |truncnr use N-R iterations for step calculation in LTRAtrunc | |truncdontcut don't limit timestep to keep impulse response | | calculation errors low | |compactrel special reltol for straight line checking | |compactabs special abstol for straight line checking | --------------------------------------------------------------------- ------------------------------------------------------------ | LTRA - model parameters (output-only) | |-----------------------------------------------------------+ | rel Rel. rate of change of deriv. for bkpt | | abs Abs. rate of change of deriv. for bkpt | ------------------------------------------------------------