Scaling and parameterizing a controller
AssigneeCleveland State University
InventorZhiqiang Gao
Life of this patent
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Abstract
Controller scaling and parameterization are described. Techniques that can be improved by employing the scaling and parameterization include, but are not limited to, controller design, tuning and optimization. The scaling and parameterization methods described here apply to transfer function based controllers, including PID controllers. The parameterization methods also applies to state feedback and state observer based controllers, as well as linear active disturbance rejection controllers. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the application. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
Claims20
A method, comprising:
- comparing, by a control system comprising a processor, one or more parameters associated with a first process to one or more corresponding parameters associated with a second process, the first process being implemented in part by a first controller;
- determining, by the control system, a first gain scale and a first frequency scale of the second process based on the comparing, wherein the first gain scale and the first frequency scale of the second process are different from a second gain scale and a second frequency scale of the first process;
- adjusting, by the control system, one or more functions of a second controller based in part on the first gain scale and the first frequency scale of the second process, wherein the second controller represents a duplication of the first controller;
- and
- implementing, by the control system, at least a portion of the second process with the second controller.
A method, comprising:
- determining, by a control system comprising a processor, a first gain scale and a first frequency scale of a first process based on a comparison between a set of parameters of the first process and another set of parameters of a second process, wherein the first gain scale and the first frequency scale of the first process are different from a second gain scale and a second frequency scale of the second process and wherein the first process is implemented by a first controller and the second process is implemented by a second controller;
- modifying, by the control system, at least one parameter of the first controller based in part on the first gain scale and the first frequency scale;
- and
- implementing, by the control system, the first process with the adjusted at least one parameter.
A method, comprising,
- determining, by a control system comprising a processor, a difference between a set of parameters associated with a first process, implemented in part by a first controller, and another set of parameters associated with a second process, implemented in part by a second controller, wherein the first process is associated with a first operation point of a physical process and the second process is associated with a second operation point of the physical process, the second operation point occurs earlier in time than the first operation point;
- determining, by the control system, a first gain scale and a first frequency scale of the second process based on the difference, wherein the first gain scale and the first frequency scale of the second process are different from a second gain scale and a second frequency scale of the first process;
- altering, by the control system, a function of the second controller based in part on the first gain scale and the second frequency scale;
- and
- implementing, by the control system, the second process comprising controlling a portion of the second process with the first controller and another portion of the second process with the second controller.
Dependencies are inferred from the claim text.