Feedforward controller synthesis for linear time variant systems

Tărniceriu, Daniela; Munteanu, Valeriu

doi:10.1002/asjc.59

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…All of the factors shown above can be considered as disturbances or modeling uncertainties when controlling linear motors and dealt with control schemes, such as adaptive control . Also, internal model control (IMC) or its similar method, disturbance observer (DOB), are used quite often.…”

Section: Introductionmentioning

confidence: 99%

Linear Model‐based Feedforward Control for Improving Tracking‐performance of Linear Motors

Li¹,

Tien²

2014

Asian Journal of Control

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The main purpose of this article is to propose a linear model-based approach for improving the tracking performance of linear motors. In particular, P-and PI-controllers, augmented with a linear-model-based feedforward controller and disturbance observer (DOB), were utilized in this research. Experimental results show that the feedforward controller can substantially reduce the phase-delay problem resulting from the limitation of closed-loop bandwidth. In addition, the DOB can reject nonlinear behaviors to keep a motor-system close to our nominal linear model. Compared with the results of using P-and PI-controllers only, tracking errors were reduced from 4.44% to 0.67% of the desired trajectory. Therefore, the proposed method provides a solution for improving the tracking performance of linear motors.

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Section: Introductionmentioning

confidence: 99%

Linear Model‐based Feedforward Control for Improving Tracking‐performance of Linear Motors

Li¹,

Tien²

2014

Asian Journal of Control

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“…In both cases, no classical method can be used to get their transfer function. Problems concerning time varying systems as transfer functions attached to them are studied in references as [4,5,6,7]. For discrete systems, the generalized transfer function (GTF) can be obtain by frozen time approximation [8], but unfortunately, it is available only at a frozen time instant.…”

Section: Introductionmentioning

confidence: 99%

Transfer functions attached to linear systems with time varying parameters

Munteanu

Tărniceriu

2006

Ann. Telecommun.

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To obtain transfer functions attached to linear time varying (LTV) systems, a new method for getting the poles and residia of linear time invariant (LTI) continuous or discrete systems is proposed. The explored method is superior to others known, because it can be extended to systems with time varying parameters. With the poles and residia so obtained, the transfer function attached to the LTV systems, both continuous and discrete, results easily. FONCTIONS DE TRANSFERT DES SYSTEMES LINI~AIRES PARAMI~TRES VARIABLES DANS LE TEMPS R6sum6Pour obtenir les fonctions de transfert des systkmes lin~aires variables clans le temps, une nouvelle mdthode pour obtenir les p&les et les rdsidus des systbmes lindraires invariables, continus ou discrets, est propos~e. La m~thode explorde est supdrieure it d'autres connues parce qu'elle peut ~tre prolongde aux systbmes ~ paramktres variables clans le temps. Avec les p&les et les r~sidus ainsi obtenus, la fonction de transfert des systkmes lindaires variables, continus ou discrets, peut ~tre facilement ddterminde.

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Feedforward controller synthesis for linear time variant systems

Cited by 2 publications

References 7 publications

Linear Model‐based Feedforward Control for Improving Tracking‐performance of Linear Motors

Linear Model‐based Feedforward Control for Improving Tracking‐performance of Linear Motors

Transfer functions attached to linear systems with time varying parameters

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