The new design of stabilised platform for target seekers using two-dof spherical linkage
by W.Z. Guo, F. Gao, Y.C. Deng, Q.H. Liang
International Journal of Design Engineering (IJDE), Vol. 3, No. 4, 2010

Abstract: A target seeker is an important portion of the guidance system for the flying vehicles to track fixed/flying objects. In the target seeker, the stabilised platform is fundamental as it provides pointing capability to maintain the apparatus mounted on it a desired time-invariant or time-variant pose. In this paper, a new design of the stabilised platform is investigated using a two-degree-of-freedom (dof) spherical linkage driven by two fixed motors. The configuration, forward and inverse kinematics, singularity as well as linearity are discussed. Then, the driving torques are modelled and investigated that leads to balance design. Furthermore, the balance design is detailed considering the motion of the flying base. Simulations illustrate the new design and a prototype is developed in the laboratory.

Online publication date: Wed, 01-Jun-2011

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