Considering combined nonlinearity of material, geometry and contact, the systemic analyses is performed on the parameters, which influence the rigidity and load-carrying capacity of joint, such as the diameter and pretension of bolts, thickness of end-plate, material, friction factor and so on.
在考虑材料、几何非线性和接触的基础上，采用ANSYS系统分析了高强螺栓的直径、预拉力，端板的厚度、构件材料，连接抗滑移系数等参数对连接节点的刚度及承载能力的影响。
Considering combined nonlinearity of material, geometry and contact, the systemic analyses is performed on the parameters, which influence the rigidity and loadcarrying capacity of joint, such as the diameter and pretension of bolts, thickness of end-plate, material, friction factor and so on.
在考虑材料、几何非线性和接触的基础上，采用ANSYS系统分析了高强螺栓的直径、预拉力，端板的厚度、构件材料，连接抗滑移系数等参数对连接节点的刚度及承载能力的影响。
The structural speciality make AMB system have advantages of no contact, no friction, no lubrication, longevity of service, and so on, but also make AMB system have the characteristic of nonlinearity, instability and parameter uncertainty which brings difficulty to the design of controller.
这种结构特殊性，使得该系统具有无接触、无摩擦、无需润滑及寿命长等优点，同时也使得该系统具有本质非线性、不稳定性和参数不确定性，给控制器的设计带来了很大的难度。
Based on the theory and nonlinear model of the CNC system, a simple adaptive robust controller and a general adaptive robust controller for CNC system are proposed to compensate the friction nonlinearity, parameter variation and unmodeled dynamics.
在应用方面，提出了数控系统的非线性模型，在此基础上分别提出了设计简单自适应鲁棒控制器和综合自适应鲁棒控制器的方法用来补偿摩擦非线性，参数不确定性以及模型不确定性的影响。
The results show that the stiffness of environmental bodies, force feedback matrix, coulomb friction and backlash nonlinearity exert a considerable influence on the force control system of robot and the force differential feedback can improve the stability of the system.
结果表明，接触物体综合刚度、力反馈矩阵、库仑摩擦和间隙非线性对力控系统影响很大；引入力微分反馈能改善系统性能。
The nonlinearity of active simulation system is induced by friction force, compressible air, and the proportional valve.
其中，主动式模拟系统主要表现为比例阀口气体流动非线性、气体压缩性而引起的非线性以及系统摩擦力所引起的非线性。