In this paper we consider the problem of estimating the attitude of a rigid body equipped with a triad of rate gyros and a pan and tilt *** nonlinearattitude observer integrates angular velocity measurements from rat...
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In this paper we consider the problem of estimating the attitude of a rigid body equipped with a triad of rate gyros and a pan and tilt *** nonlinearattitude observer integrates angular velocity measurements from rate gyros,with images of a planar scene provided by the *** exploiting directly sensor information,i) a stabilizing feedback law is introduced and exponential convergence to the origin of the estimation errors is shown;ii) an activevision system is proposed that relies on an image-based exponentially input-tostate stable(ISS) control law for the camera pan and tilt angular rates to keep the features in the image *** discrete time implementation of the observer makes use of recent results in geometric numeric integration to preserve the rotation matrix *** and experimental results demonstrate the effectiveness and applicability of the proposed solution.
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