Systems and methods for digital signal processing
AssigneeGM Global Technology Operations LLC
InventorsWajdi B. Hamama, John F. Van Gilder
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Abstract
A control system for a vehicle is provided. The control system includes a signal processing module that receives a sensor signal and extracts a plurality of sample points from the sensor signal. A computation module computes a summation of the sample points, computes a summation of squares of the sample points, and computes a standard deviation based on the summation of the sample points and the summation of the squares of the sample points. A control module generates a control signal based on the sensor signal and the standard deviation.
Claims14
A control system for a vehicle, comprising:
- a signal processing module that receives a sensor signal from an engine knock sensor and extracts a plurality of sample points from the sensor signal;
- a computation module that computes a summation of the sample points, that computes a summation of squares of the sample points, and that computes a standard deviation based on the summation of the sample points and the summation of the squares of the sample points;
- and
- a control module that generates a control signal that controls combustion in an engine based on the sensor signal and the standard deviation.
A method of processing a sensor signal for a vehicle, comprising:
- generating a sensor signal using an engine knock sensor;
- processing a plurality of sample points from the sensor signal;
- computing a summation of the sample points;
- computing a summation of squares of the sample points;
- computing a standard deviation based on the summation of the sample points and the summation of the squares of the sample points;
- and
- generating a control signal that controls combustion in an engine based on the sensor signal and the standard deviation.
Dependencies are inferred from the claim text.