Quantitative Feedback Theory
E785142
Quantitative Feedback Theory is a robust control design methodology that uses frequency-domain techniques and quantitative bounds to ensure system performance and stability under uncertainty.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| Quantitative Feedback Theory design methodology | 1 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
control theory method
ⓘ
robust control design methodology ⓘ |
| addresses |
modeling errors
ⓘ
plant parameter variations ⓘ unmodeled dynamics ⓘ |
| advantage |
explicit handling of plant uncertainty in frequency domain
ⓘ
transparent trade-off between performance and robustness ⓘ |
| alsoKnownAs | QFT NERFINISHED ⓘ |
| appliedTo |
multi-input multi-output systems
ⓘ
single-input single-output systems ⓘ |
| assumes | bounded parametric uncertainty ⓘ |
| comparedWith |
H-infinity control
NERFINISHED
ⓘ
mu-synthesis ⓘ |
| designs | feedback controllers ⓘ |
| designStep |
construction of plant templates
ⓘ
loop shaping to satisfy bounds ⓘ specification of performance and robustness bounds ⓘ verification of closed-loop performance ⓘ |
| developedBy | Isaac Horowitz NERFINISHED ⓘ |
| ensures |
closed-loop stability under uncertainty
ⓘ
disturbance rejection within specified limits ⓘ robustness to model uncertainty ⓘ tracking performance under plant variations ⓘ |
| field | control theory ⓘ |
| focusesOn | robust control design ⓘ |
| formalizedIn | 1970s ⓘ |
| goal | quantitative guarantee of performance over uncertainty set ⓘ |
| keyConcept |
bounds
ⓘ
performance specifications ⓘ plant uncertainty ⓘ robust performance ⓘ robust stability ⓘ template ⓘ |
| mathematicalBasis |
feedback control theory
ⓘ
frequency response analysis ⓘ |
| originatedIn | 1960s ⓘ |
| representsUncertaintyAs | plant templates in the Nichols chart ⓘ |
| requires | frequency response data of plant family ⓘ |
| specifies | frequency-domain bounds on loop transmission ⓘ |
| usedIn |
aerospace control systems
ⓘ
mechatronic systems ⓘ process control ⓘ servo systems ⓘ |
| uses |
closed-loop transfer function
ⓘ
loop transmission function ⓘ |
| usesDomain | frequency domain ⓘ |
| usesTechnique |
Nichols chart design
NERFINISHED
ⓘ
frequency response methods ⓘ loop shaping ⓘ |
Referenced by (2)
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this entity surface form:
Quantitative Feedback Theory design methodology