The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The conventional application of the active disturbance rejection control (ADRC) scheme leads to robust feedback-linearization of the original system dynamics which is followed next by a design of the outer-loop state-feedback with feedforward controller designed for the resultant chain of integrators. The latter design stage assumes perfect knowledge (availability) of the consecutive reference time-derivatives...
This paper proposes a new approach for detecting and isolating faults in a non-linear dynamic process using the multiple model approach. The necessary conditions for the assignability of eigenvalues to a region in the s-plane and the necessary conditions to guarantee the stability of fuzzy models for Takagi-Sugeno (T-S) fuzzy observers are derived. The paper is structured in two stages. The first...
In this paper, a robust fault detection observer is designed for a class of nonlinear systems described by T-S (Takagi-Sugeno) fuzzy model with sensor faults and unknown bounded disturbances. The method uses the technique of descriptor systems by considering sensor faults as an auxiliary state variables. The basic idea of our study is to formulate the robust fault detection observer design as a H-...
The microturbine is a complex thermal dynamic model. It is impossible to achieve accurate control because of its uncertainty and nonlinearity. In order to realize its steady control and fully exert its advantages among the distributed generation, the auto disturbance rejection control is introduced. Based on the feedback of rotational speed, extended-state observer is established. Also the controller...
In this paper, a novel robust nonlinear motion controller with disturbance observer (DOB) for positioning control of a nonlinear single-input-single-output (SISO) mechanical system is proposed. The controller is designed in a backstepping manner. At the first step, a PI controller is designed to stabilize the position error. Then at the second step, a novel robust nonlinear velocity controller with...
This paper presents a complete model of four radial DOF self-sensing magnetic bearing systems which includes all interactions between the different degrees of freedom. A method for controlling self-sensing magnetic bearings with unbalance compensation is also presented. The method uses the Q-parameterisation theory. The Q-parameterization controller is an observer-based stabilizing controller with...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.