The long-span cable nets structures are being widely used in practical engineering,and the wind-induced coefficient is important for the design of the structures.

The pseudo-excitation method is applied in the random seismic response analysis of space cable structures.

An aerodynamic force model which is expressed by shape coefficients was adopted,applying Newmark′s β-method together with Newton Raphson to nonlinear dynamic increment equilibrium equation under wind-loading to obtain a time domain method which was used for aerodynamic instability of large-span cable and membrane structures.

Considering the special characteristics (long cable structure) of the new design project with the integration of mechanical, electronic and optic technologies for the next generation large radio telescope, a corresponding control strategy and methodology are described.