The purpose of work in this paper is to present an approach for lowering impact in the deployment of hoop truss deployable space antennas. An optimization method is used to reduce the peak value of deployment angular acceleration with trajectory planning of driving cable by Bezier curves. Design variables and constraints of the optimization problem are discussed, and then the problem is solved by SQP method. Comparing with researches before, there is a conclusion that the angular speed is not necessarily designed to be uniform in the middle-period of deployment, contrarily the uniform-speed period would augment impacts on antennas. Numerical simulations show the feasibility and validity of this work.
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