Output feedback stabilization of nonlinear dual-rate sampled-data systems via an approximate discrete-time model

2012-08-01
Ustunturk, Ahmet
The problem of output feedback stabilization of nonlinear sampled-data control systems is considered under the low measurement rate constraint. A dual-rate control scheme is proposed that utilizes a numerical integration scheme to approximately predict the missing output values between measured output samples. It is shown that if an observer-based output feedback controller that semiglobally practically asymptotically (SPA) stabilizes the single-rate sampled-data plant model is given, then the SPA stability property will be preserved for the closed-loop dual-rate sampled-data system, on the basis of the proposed dual-rate control scheme under standard assumptions. A numerical example is given to illustrate the design method.

Suggestions

Output-feedback control of linear time-varying and nonlinear systems using the forward propagating Riccati equation
Prach, Anna; Tekinalp, Ozan; Bernstein, Dennis S. (2018-04-01)
For output-feedback control of linear time-varying (LTV) and nonlinear systems, this paper focuses on control based on the forward propagating Riccati equation (FPRE). FPRE control uses dual difference (or differential) Riccati equations that are solved forward in time. Unlike the standard regulator Riccati equation, which propagates backward in time, forward propagation facilitates output-feedback control of both LTV and nonlinear systems expressed in terms of a state-dependent coefficient (SDC). To invest...
Adaptive output feedback control with reduced sensitivity to sensor noise
Kutay, Ali Türker; Hovakimyan, N (2003-01-01)
We address adaptive output feedback control of uncertain nonlinear systems with noisy output measurements, in which both the dynamics and the dimension of the regulated system may be unknown, and only the relative degree of the regulated output is assumed to be known. Given a smooth reference trajectory, the problem is to design a controller that forces the system measurement to track it with bounded errors. A recently developed method proposes the use of a linear error observer that estimates the tracking ...
Non-local stabilization of nonlinear systems using switching manifolds
Banks, SP; Salamci, MU; McCaffrey, D (2000-02-01)
The stabilization of nonlinear systems is considered by reducing the problem to a lower dimensional switching manifold which is made globally attracting. The switching manifold is designed using the stable manifold of the unforced system. The technique is first developed in local case and then in the global situation of nonlinear vector fields on manifolds. The method generalizes the standard Lyapunov approach.
Output Ripple Performance Evaluation and Comparison of 2L-VSI and 3L-VSI Considering the Spectral Characteristics
Özkan, Ziya; Hava, Ahmet Masum (2015-06-05)
In this paper, two-level and three-level voltage source inverters (2/3L-VSIs) with popular pulse width modulation (PWM) methods are investigated in terms of their output (ac-side) voltage and current ripple spectral characteristics and waveform quality properties such as peak-to-peak ripple, rms ripple, and weighted total harmonic distortion. As the switching frequency and the filter size influence the output waveform quality, the inverter efficiency (loss) constraint on the switching frequency, and the siz...
Compensation of Nonlinear Effects in Three-level Neutral-Point-Clamped Inverters Based on Field Oriented Control
Mese, Huseyin; Ersak, Aydın (2012-09-06)
In this paper, the nonlinear effects in three-level neutral-point-clamped inverters will be studied and a compensation algorithm, based on field oriented control (FOC) technique, will be proposed. In voltage source inverters (VSIs), nonlinear effects such as voltage drops on power semiconductors, and their turn on/turn off times cause distortions at the output voltage. Also dead-time, inserted in order to avoid short-circuits, are another source of nonlinearity. The proposed compensation algorithm is develo...
Citation Formats
A. Ustunturk, “Output feedback stabilization of nonlinear dual-rate sampled-data systems via an approximate discrete-time model,” AUTOMATICA, pp. 1796–1802, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64347.