Package jline.solvers.fluid.analyzers

Class FluidStateRateMultiplier

java.lang.Object

jline.solvers.fluid.analyzers.FluidStateRateMultiplier

public class FluidStateRateMultiplier
extends Object

Time-varying per-state rate multiplier of the matrix-method fluid ODE.

The matrix method integrates dx/dt = W' theta(x) + ALambda, where the drift out of an ODE state is linear in the service rate of the (station, class) that owns it. A time-varying rate rate(t) for a (station, class) is therefore exactly a multiplicative factor m(t) = rate(t)/nominal applied to that state's entry of theta, and to its nominal-rate throughput contribution. This is the state-space counterpart of the per-event factor the closing ODE applies through FluidRateMultiplier (MATLAB solver_fluid_ratemult), and it lets the matrix method honour options.config.rate_sched without switching solution method.

Only the explicit rate_sched channel is expanded here. A schedule on an EXT (Source) station modulates an open arrival stream, which enters the matrix-method ODE through the constant ALambda inflow rather than through theta; such an entry is rejected with a clear error pointing at the closing ODE, which carries the arrival channel (and the NHPP path).

Method Summary

Modifier and Type	Method	Description
static FluidStateRateMultiplier	build(SolverOptions options, List<Integer> keep, int[] stationOfStateFull, int[] classOfStateFull, NetworkStruct sn)	Builds the multiplier for the kept ODE states, or returns null when no schedule is configured, so the caller keeps the legacy autonomous ODE numerically unchanged.
double[]	multAt(double t)	Per-state multiplier at time t, by clamped linear interpolation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

build

public static FluidStateRateMultiplier build(SolverOptions options,
 List<Integer> keep,
 int[] stationOfStateFull,
 int[] classOfStateFull,
 NetworkStruct sn)

Builds the multiplier for the kept ODE states, or returns null when no schedule is configured, so the caller keeps the legacy autonomous ODE numerically unchanged.

Parameters:

options - solver options carrying config.rate_sched

keep - indices of the retained states in the full state order

stationOfStateFull - station owning each full-order state

classOfStateFull - class owning each full-order state

sn - network struct (for the nominal rates and the EXT check)

multAt

public double[] multAt(double t)

Per-state multiplier at time t, by clamped linear interpolation.