Added more information to error when drive cycle starts at t>0

mzzhuo · Jan 22, 2024 · 51d9156 · 51d9156
1 parent 4484514
commit 51d9156
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diff --git a/docs/source/api/experiment/experiment_steps.rst b/docs/source/api/experiment/experiment_steps.rst
@@ -1,7 +1,7 @@
 Experiment step functions
 =========================
 
-The following functions can be used to define steps in an experiment.
+The following functions can be used to define steps in an experiment. Note that the drive cycle must start at t=0
 
 .. autofunction:: pybamm.step.string
 

diff --git a/pybamm/experiment/step/_steps_util.py b/pybamm/experiment/step/_steps_util.py
@@ -120,8 +120,12 @@ def __init__(
                 t, y = value[:, 0], value[:, 1]
                 self.duration = t.max()
 
+            # Check that drive cycle starts at t=0
+            if t[0] > 0:
+                raise ValueError("Drive cycle must start at t=0")
+
             self.value = pybamm.Interpolant(
-                t, y, pybamm.t - pybamm.InputParameter("start time")
+                t, y, pybamm.t - pybamm.InputParameter("start time"),name = 'Current Drive Cycle'
             )
             self.period = np.diff(t).min()
         else: