Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
Ionic polymer-metal composites(IPMCs) is a class of new smart materials, which can generate large bending motions under a low driving voltage, and this property of IPMCs can be used as artificial muscle driving devices without the traditional components. However, one strong non-smooth nonlinearity, hysteresis, exists between its bending curvature and the applied input voltage. The hysteresis curve...
The nano-positioner driven by magnetostrictive actuator is composed of a magnetostrictive actuator and a positioning mechanism (PM). Due to the existence of hysteretic nonlinearity in the magnetostrictive actuator and the friction behavior in the PM, the accurate position control of the nano-stage is a challenging task. This paper discusses the high precision control for the magnetostrictive nano-positioner,...
Magnetostrictive actuators exhibit inherent asymmetric hysteresis nonlinearities. In this paper, an asymmetric shifted Prandtl-Ishlinskii (ASPI) model was first proposed, being composed by three components: a Prandtl-Ishlinskii (PI) operator, a shift operator and a Lipschitz-continuous function. The benefits for such a model are that it can represent the asymmetric hysteresis behavior and facilities...
This paper dicusses the output tracking control for a continuous-time linear plant containing uncertain hysteresis nonlinearities in actuator and sensor devices simultaneously, where the hysteresis is described by Prandtl-Ishlinskii model. A new adaptive control scheme is developed to compensate the plant, the actuator and the sensor uncertainties and to generate an adaptive estimate of the plant...
When the systems are preceded by the unknown hysteresis, the system performance will be degraded due to the existence of the unknown hysteresis. The unmeasurable output and the strong non-smooth properties of the hysteresis cause the difficulties to utilize the available control approaches to ensure the system performance. Therefore, for the systems with unknown hysteresis input, the main task for...
When the systems preceded by unknown hysteresis nonlinearities, the existence of the unknown hysteresis will degrade the system performance. The main task is to develop a control approach to mitigate effects caused by these unknown hysteresis nonlinearities. In this paper, a special case of the Duhem model, the Coleman-Hodgdon hysteresis model, is employed to describe the unknown hysteresis nonlinearities...
Based on the mathematical model of wet clutch engagement, a dynamic model of a tracked vehicle was developed by means of the software Matlab/Simulink. This model can be used to simulate the shift schedule, piston pressure and relative velocity. A two dimensional heat conduction model was also developed with reasonable selection of proper boundary conditions, contact pressure model and heat flux distribution...
Control of smart actuators is limited due to hysteresis effects which affect the accuracy of these actuators in micropositioning applications. In this paper, a generalized Prandtl-Ishlinskii hysteresis model is presented to characterize hysteresis effects in smart actuators, where a generalized play operator is adopted to formulate the generalized Prandtl-Ishlinskii model. The capability of the formulated...
When the systems are preceded by unknown hysteresis nonlinearities, the system performance will be degraded due to the existence of the unknown hysteresis. In order to mitigate the effects caused by the unknown hysteresis nonlinearities, it is generally required to describe these unknown hysteresis phenomena exactly, and it is one of fundamental tasks to address the hysteresis systems. To avoid the...
Control of smart actuators is limited due to strong hysteresis effects which affect the accuracy of these actuators in micropositioning applications. In this paper, generalized Prandtl-Ishlinskii hysteresis model and its inverse are presented to characterize and to compensate hysteresis effects in smart actuators, where a generalized symmetric play operator is adopted to form the generalized Prandtl-Ishlinskii...
For the systems preceded by smart actuators which exhibit hysteresis nonlinearities with saturation property, the main task is to develop a control approach to mitigate effects caused by these saturated hysteresis nonlinearities. As an illustration, by adopting a saturated-type Prandtl-Ishlinskii model combined by play operator to describe these saturated hysteresis phenomena, a model adaptive reference...
This paper deals with robust adaptive control of a class of perturbed strict-feedback nonlinear systems with unknown hysteresis. By using Prandtl-Ishlinskii model with play and stop operators and the properties of this model mathematically, a robust adaptive control scheme is proposed. The global stability of the adaptive system is achieved, and the effectiveness of the proposed control approach is...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.