equation n. 1.平衡,均衡;平均,相等。 2.【数学】方程式,等式。 3.【天文学】(时)差;均分,等分。 4.【化学】反应式。 algebraic [linear, simple, quadratic, cubic, simultaneous] equation 代数(一次,一元一次,二次,三次,联立)方程式。 differential equation 微分方程。 an identical equation 恒等式。 equation of light 【天文学】光行时差。 equation of payments 平均分期付款。 equation of state 【物理学】物态方程式。 equation of time 【天文学】时差。 personal equation 【天文学】观测上的个人误差。
The acceptability our rejection and the depiction of some content in the course " mechanisms and machine theory " is discussed , ( e . g . , group dividing , solving steps of the graphical method for vector equation , versions and methods for analytical kinematic analysis , inversion design for linkage mechanisms , crank angle between the two limiting positions , design formulae for cam mechanisms , classification of combined mechanisms , formula of the radius of addendum circle of gear , , balancing of machinery , etc . ) and some new opinions are presented 摘要就《机械原理》课程的某些内容(如:拆杆组的方法、矢量方程图解法的解题步骤、运动分析解析法的版本和方法、连杆机构的反转法设计、极位夹角、凸轮机构设计公式、组合机构的分类、齿轮齿顶圆半径公式、机械的平衡等)的取舍和叙述进行探讨,提出一些新的看法。
The kalman filter theory is introduced and the dynamic error vector equation of the initial alignment is derived at the first . using velocity error as exterior value of observation , maneuverable characteristic that is influenced with system ' s observability and its degree is studied at length by do amount of simulations and experiences . choosing output error of accelerometers and angle error of attitude as observation respectively and system observation model is derived , which is based on analyzing kalman filter theory 首先介绍了卡尔曼滤波理论及相关技术,建立了系统卡尔曼滤波的状态方程和观测方程;首先采用速度误差作为观测值,详尽的研究了系统机动特性对可观测性和可观测度的影响,并做了大量仿真实验:通过对滤波原理的分析研究了影响的原因;分别选用加速度计输出误差和转台输出姿态角误差作为外部观测值,推导建立它们的观测模型,并通过仿真证明了分析结论的正确性。
Numerical simulations were done to show the distortion of the wavefront and the interference pattern under several kinds of typical plasma density distributions . the ray path in plasma was calculated by the numerical solution of the vector equation of light ray , when the plasma density was closing to the critical electron density of the laser frequency . through the simulations , the factors that influence the measurement were found out under different density distributions and shapes of plasma 在此基础上,采用数值模拟的方法,计算了在几种典型的等离子体密度分布下,激光波面的变化和产生的干涉图样;并用光线矢量微分方程的数值解法计算了当等离子体密度接近光频临界电子密度时,光线在等离子体中的传播路径,从中掌握了在不同的等离子体密度和形状下,进行干涉测量所应估计到的因素。
The hydraulic hitch is the common means that the operator be joined with the prime motor in farm machine . the paper made the hitch ? vector equation and found the solutions by newton iteration method through the strong numerical calculation function of computer . so the analytical solution insteaded the graphic method , the design accuracy and efficiency were acceptable 本研究推导了悬挂机构的矢量方程,并借助于计算机强大的数值计算功能,用牛顿迭代法解决了解矢量方程的问题,从而用解析法取代了图解法设计此类机构,提高了设计精度和效率。
Using matlab and its add - ons simulink , through establishing simulation maths model , the paper integrates open chain vector equation ( describing motion restriction ) , numerical value simulation ( computing velocity and displacement while given acceleration ) and matrix algebra , etc . to accomplish dynamic simulation for the robot and verifies the results for kinematics of the robot using analysis method , and it establishes foundation for following study for the robot such as kinetics , control , etc 利用matlab及其附加软件simulink ,通过建立仿真数学模型,综合开环矢量方程(描述运动约束) 、数值仿真(在加速度已知时计算速度和位移) 、以及矩阵代数等来完成机器人动态仿真,对所研究的机器人运动学分析结果进行验证,结果基本一致,为机器人的后续研究,如动力学,控制等奠定基础。
Applications of the state vector method into the analysis of lamina , the current research state of piezoelectric materials and smart materials for civil engineering applications are briefly reviewed based upon literature search . solutions for axisymmetric and non - axisymmetric layered space magneto - electro - elastic media via the state vector method are investigated . axisymmetric problem : the state vector equation of transversely isotropic axisymmetric space magneto - electro - elastic media is established in a cylindrical coordinate system 本文在文献调研的基础上,简介了状态变量法在层合结构分析巾的应用、压电材料的研究现状和智能材料与结构在土木工程中的应用;探讨了运用状态变量法求解层状压电压磁弹性材料的空间轴对称问题和非轴对称问题。