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US 8,587,351 B1Granted
Method for synchronizing sampling to sinusoidal inputs
AssigneeHamilton Sundstrand Corporation
InventorAdam Crandall
Life of this patent
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Abstract
A method for synchronizing input sampling to desired phase angles of sinusoidal signals including determining a delay time period for converging a next sample point to a next desired phase angle based on a phase error value.
Claims10
A method for synchronizing input sampling to desired phases of sinusoidal signals comprising the steps of:
- A) receiving a sinusoidal input;
- B) sampling the sinusoidal input at a current sample point having a phase angle;
- C) determining a phase error value of the current sample point relative to an estimated phase angle;
- D) determining a delay time period for converging a next sample point to a next desired phase angle based on said phase error value;
- E) delaying obtaining the next sample until said delay time period has elapsed;
- and
- F) repeating steps B-E, and thereby converging an actual sampled phase angle to the desired phase angle for the sinusoidal input.
4 more elements
An electrical controller comprising:
- an input operable to receive a sinusoidal input signal;
- and
- a phase lock module operable to cause the controller to perform the steps of:
- A) sampling the sinusoidal input at a current sample point having a phase angle;
- B) determining a phase error value of the current sample point relative to an estimated phase angle;
- C) determining a delay time period for converging a next sample point to a next desired phase angle based on said phase error value;
- D) delaying obtaining the next sample until said delay time period has elapsed;
- and
- E) repeating steps A-D, and thereby converging an actual sample phase angle to the desired phase angle for the sinusoidal input.
6 more elements
Dependencies are inferred from the claim text.