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13 changes: 7 additions & 6 deletions Tools/autotest/quadplane.py
Original file line number Diff line number Diff line change
Expand Up @@ -2499,28 +2499,29 @@ def hover_voltage():
# with sag disabled the pack should read close to its resting voltage
self.set_parameter("SIM_BATT_RES_OHM", 0)
v_no_sag = hover_voltage()
self.progress(f"hover voltage, sag disabled: {v_no_sag}V")
self.progress(f"hover voltage, sag disabled: {v_no_sag:.4f}V")
if abs(v_no_sag - 12.6) > 0.2:
raise NotAchievedException(
"Expected ~resting voltage with sag disabled, got {v_no_sag}V")
f"Expected ~resting voltage with sag disabled, got {v_no_sag:.4f}V")

# introducing resistance should sag the voltage under the same load
hover_voltage_ohms = 0.05
self.set_parameter("SIM_BATT_RES_OHM", hover_voltage_ohms)
v_sag = hover_voltage()
self.progress("hover voltage, {hover_voltage_ohms}ohm: {v_sag}V")
self.progress(f"hover voltage, {hover_voltage_ohms:.4f}ohm: {v_sag:.4f}V")
if v_sag > v_no_sag - 0.3:
raise NotAchievedException(
"Expected voltage sag with resistance, got {v_sag}V (no-sag {v_no_sag}V)")
f"Expected voltage sag with resistance, got {v_sag:.4f}V (no-sag {v_no_sag:.4f}V)")

# more resistance should sag the voltage further still
hover_voltage_more_ohms = 0.1
self.set_parameter("SIM_BATT_RES_OHM", hover_voltage_more_ohms)
v_more_sag = hover_voltage()
self.progress("hover voltage, {hover_voltage_more_ohms}ohm: {v_more_sag}V")
self.progress(f"hover voltage, {hover_voltage_more_ohms:.4f}ohm: {v_more_sag:.4f}V")
if v_more_sag > v_sag - 0.2:
raise NotAchievedException(
"Expected more sag at higher resistance, got {v_more_sag}V ({hover_voltage_more_ohms}ohm {v_sag}V)")
f"Expected more sag at higher resistance, got {v_more_sag:.4f}V"
f" ({hover_voltage_more_ohms:.4f}ohm {v_sag:.4f}V)")

# restore full thrust before landing so the RTL is not handicapped
self.set_parameter("SIM_BATT_RES_OHM", 0)
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