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对于普遍存在的具有俯仰驱动小齿轮不对称约束的天线结构,能否利用结构的对称性只计算四分之一来求解其位移呢?关键在于小齿轮约束对于天线结构的作用如何。本文从理论上分析了这个问题,认为这种结构的位移是一刚体转动与无小齿轮约束时的弹性变形之和,因而这类天线可以只算四分之一,这给天线结构的计算带来了很大方便,计算费用仅为计算二分之一结构时的四分之一,并降低了对机器存储容量的要求,因而很有实用价值。本文还以实例证明了这种方法的正确性。
For the ubiquitous antenna structure with pitch-driven pinion asymmetric constraint, can we use the symmetry of the structure to calculate only one-fourth of the displacement of the antenna structure? The key is how the pinion constraint affects the antenna structure. This paper analyzes this problem theoretically, and considers that the displacement of this structure is the sum of the elastic deformation when a rigid body is rotated and no pinion is constrained. Therefore, this type of antenna can only account for a quarter, which gives the calculation of the antenna structure A great convenience, the calculation of the cost of only one-quarter of the structure of the calculation, and reduce the storage capacity requirements of the machine, which is of great practical value. This article also shows the correctness of this method by an example.