Passive control is the most popular methodology for flexible spacecraft while it remains an open problem whether the closed-loop performance can be achieved only with passive control subject to the coupling modes of r...
详细信息
Passive control is the most popular methodology for flexible spacecraft while it remains an open problem whether the closed-loop performance can be achieved only with passive control subject to the coupling modes of rigid and ***,the closed-loop performance of passive PD control based on the dynamics of the Euler angle parameterization of spacecraft,which has been widely used in practice,is yet to be *** these challenges,by introducing the input-output exact linearization theory and Lyapunov theory,the authors show that the closed-loop performance for flexible spacecraft with rigid and flexible modes can be achieved by adjusting the parameters of the passive controllers sufficiently *** is done by firstly transforming the flexible spacecraft dynamics into an exact feedback linearization standard form,and then analyzing the closed-loop performance of flexible spacecraft.
input-output exact linearization (IOEL) is one of the exact Feedback linearization (EFL) techniques in which nonlinear dynamics (between inputs and outputs of interest) of a plant are exactly linearized. In these, an ...
详细信息
ISBN:
(纸本)0780386620
input-output exact linearization (IOEL) is one of the exact Feedback linearization (EFL) techniques in which nonlinear dynamics (between inputs and outputs of interest) of a plant are exactly linearized. In these, an outer linear control loop is employed to achieve the desired performance. However, EFL linearizes all the nonlinearities, including those which favor the desired performance, thus making the design loop inefficient. In this presentation a new and more efficient control technique (input-output Selective linearization IOSL) is presented which selectively linearizes the nonlinear parameters of a plant. The useful nonlinearities which favor the performance indexes are left unchanged. A PID controller is being proposed for the outer control loop in the design to achieve robustness and disturbances rejection properties in the overall design.
暂无评论