A Two Dimensional Of Precision Servo Tracking Mechanism Design And Analysis

As an important area of military applications, the development of missile technology plays an irreplaceable role. And the missile seeker, which is considered as the “eye” of a missile, is of prominent importance. The main role that the seeker plays is to intercept and track radiation sources(targets). And how to ensure that the seeker tracks targets reliably and accurately depends on the radar homing guidance system of the seeker, of which servo tracking mechanism is one of the core components. Therefore, the overall performance of seekers is directly affected by servo tracking mechanisms.Servo devices which require sound controllability, compact architecture, light weight, stability at low speed, sensitive dynamic responses, etc., are the basis to realize the process of radar homing guidance. In a practical operation, before a missile hits its target, the angle between it and the target is generally between 30 to 60 degrees, therefore, the rotational angle should be designed to meet the maximum. In the meantime, generally, the maximum motion angles of servo tracking mechanisms are around 40 degrees, limited by installation structures. Considering this kind of limitation, this dissertation aims to design a compact structure According to design a two-dimension servo tracking mechanism with compact structure and larger range of motion angles, which can meet various servo movement indicators.Widely referring to and comparing materials home and abroad during predesign stage, I have sorted servo tracking mechanisms and compared different structures in terms of advantages and disadvantages, and ranges and environment of application. As a result, servo tracking mechanisms with X-Y structures are adopted to unfold my design. Building 3D-modeling and introducing the method of structure optimization to optimize weight distribution, and transmission mode, this dissertation is to seek the minimum weight and space needed on condition of meeting the requirement of stiffness. The requirement of performance in the system design should be satisfied with a structure given. In the meantime, structure optimization will be adopted to enhance the servo tacking ability of the system. Servo motor model will be established, with the aim to quest for optimal overall performance, to find the given control parameters and structure parameters as well as optimal gains and variables of structure design. The designing of two-dimension servo tracking mechanisms requires weighing advancement over practicality and, meanwhile, lengthens the period of technical validity of the structure developed and enhances its cost-effectiveness.