SimPEG.electromagnetics.time_domain.sources.TrapezoidWaveform

class SimPEG.electromagnetics.time_domain.sources.TrapezoidWaveform(ramp_on, ramp_off, off_time=None, **kwargs)

Bases: BaseWaveform

A waveform that has a linear ramp-on and a linear ramp-off.

Parameters:

ramp_on(2) array_like of float

time when the linear ramp_on starts and stops

ramp_off(2) array_like of float

time when of the ramp_off starts and stops

off_timefloat

time when the transmitter_current returns to zero

Examples

>>> import matplotlib.pyplot as plt
>>> import numpy as np
>>> from SimPEG.electromagnetics import time_domain as tdem

>>> times = np.linspace(0, 1e-2, 1000)
>>> waveform = tdem.sources.TrapezoidWaveform(ramp_on=[0.0, 2e-3], ramp_off=[4e-3, 6e-3])
>>> plt.plot(times, [waveform.eval(t) for t in times])
>>> plt.show()

(Source code, png, pdf)

Attributes

epsilon	Window of time within which the waveform is considered on
has_initial_fields	Whether the waveform has initial fields.
off_time	Off-time
ramp_off	times over which the transmitter ramps off.
ramp_on	times over which the transmitter ramps on.

time_nodes

Methods

eval(time)	Evaluate current waveform at a given time
eval_deriv(time)	Evaluate the time derivative of the linear ramp-off waveform at given times

Galleries and Tutorials using SimPEG.electromagnetics.time_domain.sources.TrapezoidWaveform

EM: TDEM: Permeable Target, Inductive Source

EM: TDEM: Permeable Target, Inductive Source

TDEM: Waveforms

TDEM: Waveforms

1D Forward Simulation with User-Defined Waveforms

1D Forward Simulation with User-Defined Waveforms

3D Forward Simulation with User-Defined Waveforms

3D Forward Simulation with User-Defined Waveforms