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.
This paper presents a new variable gain robust state observer for a class of uncertain linear systems. The robust state observer proposed in this paper is composed of fixed and variable gain matrices. In this paper, LMI-based sufficient conditions for the existence of the proposed robust state observer are given. Finally, a simple illustrative example is included.
This paper describes a design method of an output and/or error signal feedback controller for a single-input-single-output plant based on integral-type optimal servomechanism. The obtained closed-loop control system has as sufficient stability margins and good control performance as a state feedback one with an observer. Particularly the resultant controller for a second-order delay plant becomes...
Observer design and analysis for time-dependent switched systems when observer switching signal both matches and mismatches the original switched system switching signal is investigated in this paper. Firstly, an asymptotic observer design methodology is proposed based on average dwell time approach when observer matches the original systems precisely. When the observer signal mismatches the original...
Active disturbance rejection control (ADRC), which can overcome the influence of unmodeled dynamics and unknown disturbance, does not need precise model for its design. However, ADRC has several parameters, which make it difficult to config. To solve the problem above, this paper proposes a design method of ADRC for linear motor servo system. The relation between feedback gain and phase margin is...
A class of discrete-time nonlinear system and measurement equations involving incrementally conic nonlinearities with finite energy disturbances is considered. A linear matrix inequality based design approach is presented that guarantees the satisfaction of a variety of performance criteria ranging from simple estimation error boundedness to dissipativity. Simple simulation examples are included to...
The contribution of this paper is to formulate a design problem for Proportional Integral (PI) observer which facilitate their use in recovery design. It is shown that the PI-observes make it possible to obtain time recovery, i.e. exact recovery for t ?? ??. An Loop Transfer Recovery (LTR) design metiod based on LQG design is derived which make it possible to obtain both time recovery and frequency-domain...
This paper proposes a design method of controllers which ensure internal stability and attain asymptotically H∞ disturbance attenuation. The design procedure developed in this paper consists of two steps: 1) design an H∞ state feedback control via an algebraic Riccati equation approach; 2) under a certain minimum phase condition, recover the achievable performance asymptotically by applying high-gain...
A general theory of observer design to achieve LTR is given. The method developed decomposes a given multivariable system into several single input single output subsystems each of which can be designed separately. The design method is in the frame work of `asymptotic pole placement', or more completely, it is in the frame work of time-scale structure and eigenvalue assignment. Thus it does not suffer...
A new, simple, and general method is proposed in this paper to preserve the robustness of the LQ control system which involves state estimators. The method is to minimize the estimator gain to the system input by selecting the estimator poles, while the existing method is to maximize the estimator gain to the system output by introducing additional noise in the input noise description. An example...
New, computationally efficient design methods are reported for discrete time-varying deadbeat observers. The importance of an ongoing deadbeat property is shown and is incorporated in the design. These results are attractive even for time-invariant systems because of their simplicity.
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.