等效力

等效力控制方法通过反馈控制代替数值迭代过程求解运动方程。

Equivalent force control ( EFC ) method replaces the numerical iteration in implicit integration with a force feedback control loop for solving the equations of motion .

基于等效力系原理，建立了紧凑拉伸（CT）试样和双悬臂梁（DCB）试样KI的一般关系。

Based upon the equivalent force system principle , a general relation between , the K_I for compact tension ( CT ) specimens and that for doublc cantilever specimens is established .

根据等效力系原理，本工作得到的KⅡ结果可直接应用于文献〔1〕中所讨论的范围内单边裂纹梁承受平面内横向力的任意情况。

Based upon the principle of equivalent force system , the results of the KII obtained in present work can be directly used to any other loading cases of a single-edge cracked beam within the limitation discussed in [ 1 ] .

PID等效力控制器的比例增益较大时，作动器位移响应中的测量噪声会导致试验子结构反力中存在不可忽略的高频成分。

With a higher proportional gain of PID equivalent force ( EF ) controller , measured noise on actuator displacement response can introduce component with high frequency , which can not be disregarded , into the restoring force of physical substructure .

为了减小测量噪声的影响，本文采用Kalman滤波器对测量噪声进行滤波，从而提高PID控制器比例增益的取值，改善等效力控制方法的时滞补偿效果。

To reduce the influence of the measured noise , a Kalman filter was employed to filter the noise in this study . A higher proportional gain of PID controller can be obtained with the Kalman filter , which improves the effect of time delay compensation of EFC method .

将GMM棒作为粘弹性杆连续系统，将GMM棒在磁场驱动下产生的应变等效为磁-机械转换等效力，建立了执行器系统的一维波动方程，并采用有限元解法求解。

Regarding GMM rod as a viscoelastic rod continuous system and treating the induced strain by external magnetic field as equivalent force . It built a one dimension wave equation for the actuator . The solution of the equation by finite element method was given .

采用比例-积分控制的实时子结构试验等效力控制方法

Equivalent force control method with proportional-integral controller for real-time substructure testing

实时子结构试验等效力控制方法中的零点问题

Zeros Problem in Real-Time Substructure Testing with Equivalent Force Control Method

平面连杆机构等效力和等效质量数学模型

Models of equivalent force and equivalent mass about planar linkage

采用等效力控制方法的剪力墙拟动力试验

Pseudo-Dynamic Test of Shear Wall using Equivalent Force Control Method

提出并研究了基于试验系统模型的等效力控制方法。

The model-based EFC method was proposed and studied .

采用等效力法模拟高强螺栓的预拉力，使框架模型得到简化。

Using equivalent force method to simulate high strength bolts pretension , which simplifies frame models .

等效力控制方法利用控制理论和方法解决了该问题。

Equivalent Force Control Method ( EFCM ) settles the problem with the help of control theories and methods .

对于多自由度结构等效力响应的振荡现象进行了分析，并给出了消减振荡的方法。

The oscillation of response of equivalent force is analyzed for MDOF structures . The method to reduce oscillation is presented .

分析结果表明：基于试验系统模型的等效力控制方法的时滞补偿效果更好。

The results show that the time delay compensation effect of model-based EFC method is better than that of EFC method .

应用上述方法求等效力、等效质量及平衡力是非常容易的。

By applying the above-mentioned method it is very easy to determine the reduced forces , the reduced mass and the balancing forces .

不动产登记制度的价值在于保护交易安全，最终保护的是私权，因登记是不动产公示的方式，因此具有推定权利正确、处分效力、善意保护等效力；

The value of register system of real property is safeguarding business safety and safeguardes private right at last . It has two character .

数值模拟和试验研究结果表明，如果等效力控制器设计合理，等效力控制方法可以取得很好的试验结果。

The analysis and experimental studies show that RSTs with the EFC method will attain satisfactory test results if the controller is designed properly . 4 .

本文分别以弹簧和磁流变阻尼器为试验子结构研究了单自由度和多自由度结构基于试验系统模型的等效力控制方法的时滞补偿效果，并与等效力控制方法的时滞补偿效果进行了比较。

Time delay compensation effects of SDOF and MDOF model-based EFC methods were studied with spring and MR damper specimens and compared with that of EFC method , respectively .

物权是社会经济生活中最基本的财产权利，当它获得法律的强力保护后即具有了支配性、优先性、排他性、追及性等效力。

The property is the basic right of lives of economy . After forcefully protected by law , it has the efficacy of domination , priority , uniqueness and recourse .

数字人体多体系统的特殊力系与等效力系和数字人体多体系统的广义力等，为数字人体多体系统运动学研究提供了理论基础。

The broad sense force of multi body system of digital human body ; and so on . It provided a theoretical base for the study of multi body system kinematics of digital human body .

采用达郎贝尔原理和等效力法建立了运动系统上平台力平衡方程，采用凯恩方法建立了运动平台任务工作空间动力学方程。

Force equilibrium equations of motion system upper platform are built based on d ' Alembert Principle and reduction method , and a task-workspace dynamic equation of motion platform is established by using Kane method .

针对试验子结构为弹性试件的情况，利用数值分析的方法检验了该控制器的有效性，并比较了无超调控制系统与原等效力系统的性能。

The effectiveness of non-overshooting control system for EFC method is verified with numerical simulation in the case of spring specimen , and the comparison between non-overshooting control system and the original control system is conducted .

研究结果表明，无超调系统消除了原系统中的等效力反应超调。

The analysis results show that the non-overshooting system eliminates the equivalent force overshoot that exists in the original control system . 2 The non-overshoot control method for velocity response is presented for the case of damper specimen .

实时混合试验等效力控制方法以力反馈控制环代替隐式积分算法的迭代计算，该控制环还可以对实时混合试验系统中的时滞进行补偿。

The EFC method has been developed for RHT to replace the numerical iteration for implicit integration with a force-feedback control loop . With this control loop , the EFC method can also compensate the time delay in RHT .

研究表明：对于线弹性结构试验，反馈控制系统在单步阶跃等效力命令输入下的响应没有稳态误差；当系统中各参数均选正值时，控制系统的稳定条件总能满足。

It is shown that the equivalent force responses subjected to step equivalent force commands have zero steady-state error for linear elastic structures , and the feedback control loop is stable since all parameters in the system are positive .

对两类多自由度结构试验，推导等效力系统的传递函数，数值分析发现其零点值与极点非常接近，研究了此时出现的零点问题及反馈补偿效果。

The transfer functions of equivalent force control system are obtained for two types of structural tests . The numerical simulation shows that the zeros are rather close to poles of the system . The feedback compensation method is also proved effective .

本文使用澜沧&耿马地震的剩余形变记录、剪切位错源的S波辐射和格林函数，计算了产生大面积形变场的震源内等效力。

In this paper , the equivalent force in the source which produces a large area deformation field is calculated by using the records of residual deformation , S wave radiation of shear dislocation source and Green Function of the Lancang-Gengma earthquake .

为了避免实时子结构试验中数值积分的迭代过程，等效力控制方法将求解隐式微分方程的问题转化为具有明确输入和被控对象的信号跟踪反馈控制问题。

In order to avoid iterative numerical integration process in a real-time substructure test , equivalent force control method ( EFCM ) replaces the mathematical iteration with a force-feedback control loop which has explicit input and controlled plant to solve the nonlinear equations .

在强度为1.103×10~（13）牛顿的等效力作用下，地震断层东北盘的地壳表层物质在主震发生后，经20.46分钟的时间过程完成了向上抬升的永久性不回复形变。

Under the action of equivalent force which intensity is 1 . 103 × 1013N , the curst derm of north-east segment of seismic fault had finished the uprise permanent non-restoring deformation during 20 . 46 minutes time process , after the major earthquake occurred .