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 c
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.
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1. A system, comprising: a servo; anda controller embodied on at least one of an integrated circuit, a microprocessor, or a programmable logic device, wherein the controller is configured to control the servo to cause a position of a read/write head of a hard disk drive to follow a setpoint position
1. A system, comprising: a servo; anda controller embodied on at least one of an integrated circuit, a microprocessor, or a programmable logic device, wherein the controller is configured to control the servo to cause a position of a read/write head of a hard disk drive to follow a setpoint position, and whereinthe controller comprises two or more gains that are functions of a single control tuning parameter comprising a control system bandwidth of the controller,the two or more gains are represented by respective two or more mathematically related functions whose only variable is the single control tuning parameter, andthe control system bandwidth defines a common location of N poles of an Nth order closed-loop system comprising the controller and the servo, where N is an integer. 2. A system, comprising: an anti-lock brake system of an automobile; anda controller embodied on at least one of an integrated circuit, a microprocessor, or a programmable logic device, wherein the controller is configured to control a wheel speed of the automobile, and whereinthe controller comprises two or more gains that are functions of a single control tuning parameter comprising a control system bandwidth of the controller,the two or more gains are represented by respective two or more mathematically related functions whose only variable is the single control tuning parameter, andthe control system bandwidth defines a common location of N poles of an Nth order closed-loop system comprising the controller and the anti-lock brake system, where N is an integer. 3. A system, comprising: a controller embodied on at least one of an integrated circuit, a microprocessor, or a programmable logic device, wherein the controller is configured to control a speed of a manufacturing assembly line, whereinthe controller comprises two or more gains that are functions of a single control tuning parameter comprising a control system bandwidth of the controller,the two or more gains are represented by respective two or more mathematically related functions whose only variable is the single control tuning parameter, andthe control system bandwidth defines a common location of N poles of an Nth order closed-loop system comprising the controller and the manufacturing assembly line, where N is an integer. 4. A system, comprising: an aircraft control system; anda controller embodied on at least one of an integrated circuit, a microprocessor, or a programmable logic device, wherein the controller is configured to control at least one of an altitude, a heading, or a velocity of an aircraft via the aircraft control system, and whereinthe controller comprises two or more gains that are functions of a single control tuning parameter comprising a control system bandwidth of the controller,the two or more gains are represented by respective two or more mathematically related functions whose only variable is the single control tuning parameter, andthe control system bandwidth defines a common location of N poles of an Nth order closed-loop system comprising the controller and the aircraft control system, where N is an integer. 5. A system, comprising: a reactor vessel of a chemical process plant; anda controller embodied on at least one of an integrated circuit, a microprocessor, or a programmable logic device, wherein the controller is configured to control at least one of a temperature or a pressure of the reactor vessel, and whereinthe controller comprises two or more gains that are functions of a single control tuning parameter comprising a control system bandwidth of the controller,the two or more gains are represented by respective two or more mathematically related functions whose only variable is the single control tuning parameter, andthe control system bandwidth defines a common location of N poles of an Nth order closed-loop system comprising the controller and the reactor vessel, where N is an integer. 6. The system of claim 1, wherein the controller is at least one of a proportional/integral/derivative controller, a state feedback controller, a linear active disturbance rejection controller, or a transfer function based controller. 7. The system of claim 1, wherein the Nth order closed-loop system further comprises a linear extended state observer. 8. The system of claim 2, wherein the controller is at least one of a proportional/integral/derivative controller, a state feedback controller, a linear active disturbance rejection controller, or a transfer function based controller. 9. The system of claim 2, wherein the Nth order closed-loop system further comprises a linear extended state observer. 10. The system of claim 3, wherein the controller is at least one of a proportional/integral/derivative controller, a state feedback controller, a linear active disturbance rejection controller, or a transfer function based controller. 11. The system of claim 3, wherein the Nth order closed-loop system further comprises a linear extended state observer. 12. The system of claim 4, wherein the controller is at least one of a proportional/integral/derivative controller, a state feedback controller, a linear active disturbance rejection controller, or a transfer function based controller. 13. The system of claim 4, wherein the Nth order closed-loop system further comprises a linear extended state observer. 14. The system of claim 5, wherein the controller is at least one of a proportional/integral/derivative controller, a state feedback controller, a linear active disturbance rejection controller, or a transfer function based controller. 15. The system of claim 5, wherein the Nth order closed-loop system further comprises a linear extended state observer.
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