Abstract:

The captive trajectory simulation system (CTS) is a multi-degree of freedom mechanism used in wind tunnel as a tool to simulate the separation trajectory of the store after it separates from the mother plane. The general concept of the continuous coordinated control of CTS along dynamically generated trajectory is illustrated at first. The two main technical problems in the dynamic continuous control of the CTS jig, which are the continuous dynamic coordinated control of the jig and the signal processing of the balance signals, are discussed in detail. By applying a real-time iterative nonlinear optimiztion method, an optimized coordinated control algorithm is designed. A real-time filtering algorithm with short-latency is also designed by deploying the zero phase shift digital filter which can extract the effective signal from the banlance signals. The wind tunnel test results show that, given the same initial test conditions, the resulting simulation trajectories generated by the continuous control method are overall identical to the trajectories generated by the move and stop control method. While the former control method has greatly improved the test efficiency of the CTS trajectory simulation in wind tunnel. About 60 percent of wind tunnel running time and gas consumption can be reduced.