機(jī)載多框架穩(wěn)定平臺(tái)控制技術(shù)研究
[Abstract]:The multi-frame stabilized platform is a kind of equipment which is installed on the motion carrier. The equipment can ensure that the orientation of the object installed on the platform remains relatively unchanged in a certain space range. When the stabilized object is subjected to a certain moment and external disturbance, the orientation of the stabilized object is adjusted to meet the preset requirements. Multi-frame stabilization platforms are used to track ground or air targets. When the attitude angle of the carrier changes, the stable tracking platform can isolate the interference motion of the carrier and ensure that the tracking and detecting equipment can track the target accurately and quickly. With the development of light, machine, electricity and other technologies, multi-frame stabilization platform has been developed rapidly, and it is more and more widely used in military and civilian fields. Military is mainly used in UAV, weapon system platform, missile guidance and so on. Civil aspects are mainly used in environmental monitoring, space telemetry, public security fire protection and other fields. In this paper, a two-axis and four-frame stabilized platform is taken as the research object. The principle, model, control strategy and the realization of the platform control system are analyzed and studied by the method from theory to practice. Firstly, the principle of two-axis and four-frame stabilized platform is analyzed, and the factors that affect the stability of multi-frame stabilized platform are analyzed. Then, according to the corresponding factors, several methods of stabilizing the view axis are proposed, such as global stability method. Optical stability method, electronic stability method, momentum stability method, etc. Then, the working principle of multi-frame stabilized platform is analyzed, and the kinematics equation of two-axis and four-frame platform is deduced according to the coordinate stability relation. At the same time, the principle of isolating carrier disturbance is analyzed. Secondly, the functional requirements of two-axis four-frame stabilized platform are analyzed, and the corresponding servo control loop is designed. The control system loop of two-axis four-frame stabilized platform is studied: rate stabilization loop, automatic tracking loop and position tracking loop, and the multi-frame automatic tracking loop is analyzed emphatically. At the same time, the mathematical modeling of the components in the control loop is carried out. Thirdly, the factors affecting the stability accuracy of the two-axis four-frame stabilized platform system are analyzed, the structure of the rate stabilization loop is analyzed, and the FAKPID control method is proposed to further improve the steady-state performance and anti-interference performance of the system. At the same time, the correction links of automatic tracking loop and position servo loop are studied, and the corresponding controller is designed. Finally, a prototype is developed for the two-axis four-frame stabilization platform, and the hardware composition of the prototype is introduced. At the same time, the correctness of the research is verified by the control system experiment of the four-frame stabilized platform.
【學(xué)位授予單位】:長(zhǎng)春理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2016
【分類號(hào)】:V241
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