Cascade controller calibration
AssigneesFord Global Technologies, LLC, The Regents of the University of Michigan
InventorsLodewijk Wijffels, Joshua Guerra, Taehyun Shim, Yijun Li
Life of this patent
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Abstract
Upon determining calibration parameters for a single-loop controller that minimize a difference between an input to the single-loop controller and a response from the single-loop controller, calibration parameters for a cascade controller are determined based on the determined calibration parameters for the single-loop controller. The cascade controller includes a secondary controller and a primary controller. The calibration parameters for the cascade controller are provided to a second computer in a vehicle.
Claims20
A system, comprising a computer including a processor and a memory, the memory storing instructions executable by the processor to:
- convert calibration parameters for a cascade controller to calibration parameters for a single-loop controller, wherein the cascade controller includes a primary controller and a secondary controller, and respective calibration parameters of the primary controller and the secondary control of the cascade controller are converted to the calibration parameters of the single-loop controller;
- determine the calibration parameters for the single loop controller so as to minimize a difference between an input to the single-loop controller and a response from the single-loop controller;
- convert the calibration parameters for the single loop control to updated calibration parameters for the cascaded controller;
- wherein the updated calibration parameters for the cascade controller are provided to a second computer in a vehicle for vehicle operations;
- and
- wherein the second computer can be programmed to update calibration parameters for the cascade controller periodically when instructed by the computer.
A method, comprising:
- converting calibration parameters for a cascade controller to calibration parameters for a single-loop controller, wherein the cascade controller includes a primary controller and a secondary controller, and respective calibration parameters of the primary controller and the secondary control of the cascade controller are converted to the calibration parameters of the single-loop controller;
- determining the calibration parameters for a single-loop controller so as to minimize difference between an input to the single-loop controller and a response from the single-loop controller;
- converting the determined calibration parameters for the single-loop controller to updated calibration parameters for the cascade controller;
- and
- providing the updated calibration parameters for the cascade controller to a second computer in a vehicle;
- wherein the second computer can be programmed to update calibration parameters for the cascade controller periodically when instructed by the computer.
Dependencies are inferred from the claim text.