本文提出了一种基于主轴转速的机床热误差状态方程模型。
This paper presents a state space model based on spindle rotation speed for thermal errors of machine tool.
由于系统方程是时变的,在测量过程中,系统噪声和观测噪声的统计特性等很难精确地估计或测定,事实上很多误差模型都不能简单的设为白噪声。
Because the system equation is changed with time, during the measurement, the statistic character of the system noise and the observation noise cannot be estimated or be determined accurately.
在误差为AR(1)时间序列的情形下,给出了半参数回归模型的拟极大似然估计方程,并研究了拟极大似然估计量的存在性。
When errors is a ar (1) time series, we studied the quasi-likelihood equation for the semiparametric model, and investigated the existence of quasi-maximum likelihood estimators.
通过计算比较发现,基于PR状态方程的粘度预测模型误差较大,而LBC经验关系能较准确地确定酸性气体的粘度。
Calculation shows that the viscosity model based on pr state equation has big error, while LBC empirical relationship can provide more accurate viscosity of acidic gas.
根据该差分方程的特征值表达式讨论了AGC模型设定序列的稳定区域和稳态误差与AGC模型参数之间的关系。
On the basis of the expression of characteristic value of the differential equation, the relationship between the stable domain, steady state, steady-state error and AGC model parameters is discussed.
分析了摆动从动件圆柱凸轮机构误差产生原因,建立了数学模型,并给出其实际运动规律的方程。
To analyze the cause of design error on Oscillating follower Cylinder Cam Mechanism, building the mathematics model, and affording the equation to conform to actual motion rule.
数学模型误差——主要由趋势面方程的逼近特性所引起。
The error of mathematical model is mostly resulted from near properties of the equations of trend surface.
利用物理摆原理导出了自动安平水准仪磁致误差的理论函数模型,建立了地磁场中的观测方程。
Based on the theory of horizontal pendulum, the theoretical function model of magnetic error of self adjusting level is deriveted, and observation equation in geomagnetic field is set up.
通过分析惯性测量组件的误差模型和旋转式捷联系统误差传播方程,解释了旋转误差补偿的机理。
By analyzing the error model of Inertial Measurement Unit (IMU) and the navigation error propagating function, the mechanism of error rotating compensation method was illustrated.
采用误差分析方法导出增量型自动厚度控制(agc)模型设定序列的差分方程。
A differential equation of giving series of incremental AGC (Automatic Gauge Control) model has been derived by the error analysis method.
利用距离误差模型构造出机器人本体的约束方程,并求解出机器人的实际几何参数,进而将该参数应用于修正系统的运动学模型。
Constraint equations were constructed by using distance error model, and the actual geometric parameters of the robot were solved, and then these parameters were used in the modified kinematics model.
利用抛物型偏微分方程的极值原理,得到了带跳扩散模型下美式期权价格及最佳实施边界的误差估计。
Using the critical estimates of parabolic type partial differential equation. we obtain the error estimates of price and optimal exercise boundary of American option in a jump-diffusion model.
微分模型没有模型误差,微分方程的求解存在舍入误差。
The differential model not has model error. Solving the differential equation has rounding error.
为此,本文以弧面分度凸轮的轮廓面方程为基础,建立了弧面分度凸轮的三维模型,提出了一种用三坐标测量机测量其轮廓面误差的方法。
Therefore the author built a 3-d model based on the surface equations of roller gear CAM, and presented a method of using coordinate measuring machine (CMM) to measure the surfaces of the CAM.
模型的不确定性(模型误差)是通过建立的虚拟观测方程来考虑的。
The model uncertainties or model errors also can be considered through some fictitious observation equations.
借助于移动目标的运动矢量模型以及GPS定位误差模型建立了滤波方程。
By means of kinetic vector model of mobile object and GPS location error model, the filtering equation are presented.
以圆矢量函数为工具,推出了误差条件下的渐开螺旋面方程,并以啮合线为媒介,建立了测量蜗杆误差补偿的数学模型。
With the tool of circle vector function, the involute helix profile with error is given, and with the media of engagement line, the error compensation mathematical model is established.
根据平台式惯性测量系统的实际情况,简化了惯性测量误差模型,推导了平台式惯性测量系统误差观测方程,并进行了车载试验的试验设计。
According to the practice of vehicle test of platform inertial measurement units, the error model of inertial measurement units was simplified, and the error measurement equations were deduced.
该模型是可识别且误差结构矩阵不是对角矩阵的联立方程组模型。
The simultaneous models were recognizable and their error structure matrices were not diagonal.
结论:结构方程模型用于职业紧张的研究,因考虑了测量误差,较传统线性模型,结果更可靠。
Conclusion: Structural equation model can be used to study occupational stress, the analysis results were more reliable than that of traditional liner model for measurement error was considerated.
以武器必须命中目标为约束条件,建立了构思模型、控制模型与瞄准误差、设计误差的关系方程。
With the constraint conditions that weapons must hit targets, the relation expressions between conception model and control model vs. pointing error and design error have been established.
通过任意两坐标系间的向后微分关系,利用运动学方程以及并联机构的环路特性,建立了微机器人的广义几何误差模型。
The method represents the effects of all possible error sources on robotic mechanisms as generalized geometric errors in a unified manner.
在本文中,我们将对系数剧烈振荡的线性弹性力学方程做模型误差估计。
In this paper, we provide a detailed estimate for the modeling error of linear elasticity problems with highly oscillatory coefficients.
本模型是过度可识别且误差结构矩阵不是对角矩阵的联立方程组模型。
The model was excessiveness identified and error structure matrix, not cross matrix.
本文在建立滚齿过程数学模型的基础上,求出实际方程,在计算机上对实际滚齿过程和齿形检测过程进行了仿真,并对齿形轮廓和齿形误差进行了分析。
The mathematical model in agreement with the practical generating process is established. The practical generating process and the testing process of gear shape are simulated by use of computer.
在此基础上,建立了误差状态空间方程与误差模型框图。
Based on the error mathematic model, state-space model and block diagram of error model are established.
本文从滴定误差直接定义出发,结合滴定曲线方程,建立滴定误差统一模型。
According to the original definition of titration error and titration curve equation, a general model for titration error has been built up.
根据冲量原理和小偏差理论给出了后效冲量误差引起导弹命中误差的一种计算方法和模型,提出了一种用关机分离方程控制射程的方法。
On the basis of impulse fundamentals and short offset theory, a calculation method and its model of missile hit error generated by after-working impulse are given.
结果显示理想溶液模型的误差较大,多项式经验方程的误差最小。
Correlation results showed that the polynomial empirical equation is the best to fit in the experimental results.
结果显示理想溶液模型的误差较大,多项式经验方程的误差最小。
Correlation results showed that the polynomial empirical equation is the best to fit in the experimental results.
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