主动 1.(能够造成有利局面) initiative 主动作某事 do sth. on one's own initiative; do sth. of one's own accord; 争取主动 try to gain the initiative; contend for the initiative; 主动为人们做好事 be active in doing good to men; 主动求婚[爱尔兰] take the initiative in courtship; 她不愿意主动这么做。 she does not like to do so from her own initiative. 他工作很主动。 he displays great initiative in his work.2.[机械工程] driving; 主动报价 unsolicited offers; 主动导航 active homing; 主动舵 active rudder; main rudder; 主动滑轮 driving pulley; feed pulley; 主动皮带轮 drive pulley; 主动注意 [心] active attention
Optimal placement of active rods in active vibration control of smart truss structures with random parameters 随机参数智能桁架结构振动控制中主动杆的优化配置
Optimal design of number and locations of actuators when adopting the adaptive fuzzy control in active control 桁架结构振动的主动模糊控制中主动杆数目与位置优化
In this paper , the research of structural dynamic analysis , the optimization of active bars placement and the active vibration control for piezoelectric structure are studied 本文针对随机参数压电智能桁架结构开展了结构动力分析、主动杆优化配置和结构振动主动控制研究。
Firstly , for the intelligent structure ' s active bars , a constant output velocity feedback control law is dissipation energy due to control action and the optimal mathematical model with the reliability constraints on dynamic stress and displacement was built 以直接输出速度反馈作为闭环控制律,基于最大耗散能准则,建立了以主动杆配置位置和控制系统增益为设计变量,具有动力响应(应力响应和位移响应)可靠性约束的压电智能桁架结构主动杆优化配置的数学模型。
Several numerical examples are present to illustrate the correctness and practicability of model of dynamic characteristic analysis , dynamic response analysis and optimization of active bars " location built in this paper . the validity of active vibration control for piezoelectric structure with random parameters is demonstrated by means of the computer simulation 最后,通过数值算例验证了文中建立的动力特性分析模型、动力响应分析模型和主动杆优化配置模型的正确性及可行性;通过计算机仿真,表明了对结构振动主动控制的有效性。
The main research works can be described as follows : 1 . considering the randomness of physics parameters of structural material , geometric dimensions of active bars and passive bars of the piezoelectric intelligent truss structure simultaneously , the analytic model of the structural dynamic characteristics are built based on the random factor method ( rfm ) 主要内容如下: 1 、考虑压电智能桁架结构主动杆单元及被动杆单元物理参数、几何参数同时具有随机性,基于随机因子法,构建了结构动力特性分析模型,提出求解方法,推导出结构动力特性随机变量的数字特征计算表达式。