Control System Design Of Stable Platform For Optical-guided Precision-guided

In this paper, an overview of the development of LOS stabilization technology and the photoelectric stable platform in the world are summarized at first, which shows the significance of analyzing the control system design of infrared imaging-guided seeker gyro stabilized platform under the background of nowadays'guidance technology, and determine the specific studies which needs to be completed during the research subject, after analyzing the principle of gyro stabilized platform and LOS stabilization system, a whole-platform-type stabilizing method using flexible gyro as feedback element has been proposed.Afterwards, Specific to the overall research methodology, this paper emphasizes on the designation of the whole LOS stabilization control system and part of the hardware structure. During the design of the control system,a control system of two-axis gyro stabilized platform which could isolate the angular motion of missile body is proposed, and the basic structure of the whole control system and the mathematical model of each tache are established and analyzed. Based on the analysis, the performance requirement that the servo system should achieve, which stands for a velocity stabilized loop with a high open-loop gain and appropriate bandwidth, has been put forward. According to the requirements, the LOS stabilization control mode under missile body perturbation of different frequencies has become a subject that needs to be focused on. After researching on simulation experiment, a feed forward compensation control scheme is proposed. Besides, in order to carry out pre-experimental test, this topic has also completed parts of the system hardware architecture design, including the servo controller and its interface with the test modules, and the power amplify and drive modules which are devoted to driving the torque motor. In addition, a corresponding Square-wave output circuit is also designed to replace the output of optical encoder, for the simulation test.Finally, according to the design program produced the corresponding hardware design and debugging. Through the system-wide simulation to test the performance of the system work. And achieved predestinate target.