48905

Автор(ы): 

Автор(ов): 

1

Параметры публикации

Тип публикации: 

Доклад

Название: 

Cascade synthesis of external perturbations observers based on virtual models

ISBN/ISSN: 

978-5-7782-3615-8

Наименование конференции: 

  • 14th International conference on Actual Problems of Electronic Instrument Engineering (APEIE-2018, Novosibirsk)

Наименование источника: 

  • Proceedings of 14th International conference on actual problems of electronic instrument engineering (APEIE-2018,Novosibirsk)

Обозначение и номер тома: 

Vol. 1, Part 6

Город: 

  • Novosibirsk

Издательство: 

  • IEEE, Novosibirsk State Technical University

Год издания: 

2018

Страницы: 

241-246
Аннотация
The formation of a combined control based on estimates of external uncontrolled influences is one of the methods for the synthesis of invariant systems. The method of expanding the state space due to the dynamic model simulating the action of external disturbances and the construction on its basis of a dynamic compensator or perturbation observer is the most developed in the theory of automatic control. However, in practice it is difficult to construct an adequate dynamic model of external perturbations. An alternative method for estimating external influences that does not require the extension of the state space is to use state observers with discontinuous corrective actions functioning in the sliding mode or their continuous analogues. Within the framework of this approach, in thе paper, the original method for estimating the derivatives of external disturbances based on virtual dynamic models composed by sequential differentiation of a part of the derivative of state variables of the control plant, to which the estimated disturbances acting, is proposed. Note that real differentiation of signals is not performed. Virtual models are not introduced into the regulator, only dynamic observers of perturbations derivatives are present in the feedback loop. Observers are built as replicas of virtual models and in fact are differentiators. Procedure for cascade synthesis of observers of perturbations derivatives with piecewise linear correcting actions is developed. In this procedure, the method of separation of motions in virtual space of observation errors is realized. Not only the observer's variables, but also their corrective actions, serve as estimates of the derivatives of external perturbations.

Библиографическая ссылка: 

Краснова С.А. Cascade synthesis of external perturbations observers based on virtual models / Proceedings of 14th International conference on actual problems of electronic instrument engineering (APEIE-2018,Novosibirsk). Novosibirsk: IEEE, Novosibirsk State Technical University, 2018. Vol. 1, Part 6. С. 241-246.