نتایج جستجو برای: recursive least squares
تعداد نتایج: 420528 فیلتر نتایج به سال:
The aim is to develop vibration control of flexible spacecraft by adaptive controller. A case study will be carried out which simulates planar motion of flexible spacecraft as a coupled hybrid dynamics of rigid body motion and the flexible arm vibration. The notch filter and adaptive vibration controller, which updates filter and controller parameters continuously from the sensor measurement, a...
In this paper we obtain upper and lower bounds for the H 1 norm of the Kalman lter and RLS algorithm, with respect to prediction and ltered errors. These bounds can be used to study the robustness properties of such estimators. One main conclusion is that, unlike H 1-optimal estimators which do not allow for any ampliication of the disturbances, the least-squares estimators do allow for such am...
We consider the problem of identifying switched linear state space models from a finite set of input-output data. This is a challenging problem, which requires inferring both the discrete state and the parameter matrices associated with each discrete state. An important contribution of our work is that we do not make the restrictive assumption of minimum dwell time between the switches, as it i...
This paper addresses both dynamic modelling and dynamic parameter identification of a permanent magnet spherical actuator, which is capable of performing three-degree-of-freedom (DOF) motion in one single joint. The dynamic model of the spherical actuator is derived from Lagrange’s equations, but the parameters, called dynamic parameters, in the model are usually uncertain. Then the dynamic mod...
Abstract In this paper, a 2-D iteratively reweighted least squares lattice algorithm, which is robust to the outliers, is introduced and is applied to defect detection problem in textured images. First, the philosophy of using different optimization functions that results in weighted least squares solution in the theory of 1-D robust regression is extended to 2-D. Then a new algorithm is derive...
We develop an efficient adaptive receiver for joint equalization and interfercnce cancellation for multi-user space-time blockbcoded transmissions. The receiver exploits the rich code suucture and allows multiple user transmissions over frequency-selective fading channels with reduced compleiity and lower system overhead. The adaptation scheme is based on a recursive least-squares implementatio...
In this work, a recursive procedure is derived for the identification of switched affine models from input-output data. Starting from some initial values of the parameter vectors that represent the different submodels, the proposed algorithm alternates between data assignment to submodels and parameter update. At each time instant, the discrete state is determined as the index of the submodel t...
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