作动器参数对结构性能的影响和调整受力状态的实施策略模拟

基于规划法研究了作动器各参数对自适应超静定桁架性能的影响。该规划法能够使结构工作状态更合理化。这一方法能够改善自适应结构的工作状态因而提高承载能力。以此为基础，研究了具有作动器的组合杆的有关参数诸如变形上限、刚度和承载力上限对于控制效果的影响。从而为作动器的合理选择提供了理论根据。对于调整作动器变形以控制结构强度的实施策略进行了模拟和分析。该策略包括3部分：1．模拟和分析了“加载、调控、卸载”重复循环直至调控的完成；2．不同作动器按比例同时放大变形直到调控实现；3．多次加载、调控同一次加载、调控结构的等价性。研究表明本文提出的使结构工作状态合理化的调控过程是安全、可靠和灵活的。

Influence of parameters of actuators and simulatingof adjusting force-bearing state

Influences of parameters of actuators for structural properties of the adaptive statically indeterminate truss are investigated based on the programming method. The programming method can make the structural working status more reasonable. This method can improve the working status of adaptive structures and enhance their load capacity. On this basis, the influence on control effect of relative parameters, which are the upper bound of deformation, stiffness and upper bound of bearing force of the combined bar with actuator, is studied. This provides a theoretical base for reasonable selection of actuators. The implementation strategy for controlling structural strength to adjust actuator's deformations is then simulated and analyzed. The strategy includes three parts: 1. the simulation and analysis of repeated cycles of "loading, control and adjustment, unloading" until the completion of control and adjustment; 2. the simultaneous proportional magnification of the deformation of various actuators until the realization of the adjustment; 3. the equivalence of the results of multi\|time loading, adjustment and single time loading, adjustment. The study shows that the control and adjustment process of making reasonable structure working status proposed in this paper is safe, reliable and flexible.