Application of linear splines to internal combustion engine control
AssigneeGM Global Technology Operations LLC
InventorKenneth Dudek
Life of this patent
Estimating the term…
Abstract
A modeling system for a control parameter of a vehicle comprises a first model that formulates the control parameter in terms of linear spline basis functions, coefficients, and knots. A second model is derived according to the first model, includes coefficients that are derived according to the linear spline basis functions, coefficients, and knots, and forms a linear equation for the control parameter. A memory module stores the linear equation. A control module calculates the control parameter according to the linear equation.
Claims15
A modeling system for a control parameter of a vehicle comprising:
- a first model that formulates the control parameter in terms of linear spline basis functions, coefficients, and knots;
- a second model that is derived according to the first model, that includes coefficients that are derived according to the linear spline basis functions, coefficients, and knots, and that forms a linear equation for the control parameter;
- a memory module that stores the linear equation;
- and
- a control module that calculates the control parameter according to the linear equation.
A control system for a vehicle comprising:
- a first module that determines an engine performance parameter;
- a memory module that stores a linear equation that represents an engine control parameter for a range of values of the engine performance parameter, and that stores at least one equation parameter value of the linear equation, wherein the range of values are defined by linear spline knots;
- and
- a control module that communicates with the first module and determines whether the engine performance parameter is within the range of values, and that calculates the engine control parameter according to the linear equation and the at least one equation parameter value when the engine performance parameter is within the range of values.
A linear spline modeling method for a vehicle control parameter comprising:
- determining a first equation that represents the vehicle control parameter in terms of linear spline, basis functions, coefficients, and knots and that defines a value of an engine parameter for a first data range;
- determining at least one parameter of a second equation for the first data range according to the linear spline basis functions, coefficients, and knots;
- and
- calculating the vehicle control parameter according to the second equation and the at least one parameter.
Dependencies are inferred from the claim text.