转角

Nextly, the relationship model between the PID parameters and joint's angle position has been set up by least square algorithm.

应用最小二乘法建立PID参数与关节转角位置的关系模型。

The classical ISAR imaging method based on FFT cannot statisfy the imaging requirements in the case of large rotating angle and nonuniformly rotating targt.

一、引言 ISAR成像的横向距离分辨是由相干处理期间目标的等效转角和波长所决定。

Through Hilbert transform, a signal's plane trace can be get. There are two frequencies in the tested signal, so the signal's plane trace may be looked as the track of the out pole's end when two poles rotate around parallel axles. Using the knowledge of motion synthesis in theory mechanics, a formula to describing the change of plane trace's step length and angle for two-frequency be get. So we may prolongate the tested signal's plane trace from the echo's initial arriving moment, and get a certain length of the signal's prolongation.

通过Hilbert变换可得到测试信号的平面迹线，测试信号中只含有两个频率成分，视为双频信号，双频信号的平面迹线相当于两连杆绕平行轴转动时外杆杆端迹线，利用理论力学中运动合成和瞬心知识，推导出双频信号平面迹线步长平方满足余弦线性复合函数，而迹线转角可视为线性变化，据此可对回波到来之前的测试信号平面迹线作延长，得到一定长度的信号延展段，信号延展段与实测段作差可得到一次、二次回波的第一个波峰值。

quadrifilar helix antenna ; circular-polarization ; axial ratio

它有四根旋臂和顶部的两根直臂，每根旋臂的旋转角

The slant conical shell of fixed tube-sheet reboiler is simplified for stress analysis with finite element method.

对固定管束釜式重沸器的斜锥壳元件建立了简化力学模型，并进行了有限元分析计算，结果表明大端转角过渡区存在较大的弯曲应力。

Based on the above, the author built the vehicle virtual prototyping simulating model including the front and rear suspensions, the powertrain, the steering system, the front and rear tires, wrote the driver control files(abbreviation. dcf) and driver control data files(abbreviation. dcd) for vehicle handling stability simulation analyzing according to the requirements of the current standards GB/T6323.1-94-GB/T6323.6-94 of our nation"s for vehicle controllability and stability test, carried out simulation and analyses for vehicle handling stability such as steering wheel angle step input test, returnability test, steady static circular test, pylon course slalom test and steering efforts test, and evaluated the car"s handling stability performance by scoring according to GB/T 13047-91 ?Criterion thresholds and evaluation of controllability and stability for automobiles?.

在上述基础上建立了包括前后悬架、发动机、转向系、前后轮胎等在内的整车虚拟样机仿真模型，并根据我国现行整车操纵稳定性试验标准GB/T6323.1-94～GB/T6323.6-94的要求，编写了用于整车操纵稳定性仿真分析的驱动控制文件(Driver Control Files，缩写为DCF)和驱动控制数据文件(Driver Control Data Files，缩写为DCD)，进行了转向盘转角阶跃输入试验、转向回正试验、稳态回转试验、蛇行试验和转向轻便性试验等整车操纵稳定性试验仿真分析，并参照GB/T13047-91《汽车操纵稳定性指标限值与评价方法》对该轿车的操纵稳定性进行了评价计分。

In this paper the author introduces a new laser rotative angle sensor developed by the author himself,mainly discusses the usage of this kind of sensor in mechanical manufacturing: online measuring the geometrical and physical parameters, and suggests the method to improve the sensor.

段晓刚 ，解晓松，隋新对作者研制的一种新型激光转角传感器进行了介绍，重点论述这种传感器在机械制造业中可以开发的多种用途棗几何参数及物理参数的在线测量，同时也提出了改进传感器的途径。

The trajectory of the center point of cornea and the angle of eyeball was recorded by smear photography during the normal human eye saccadic movements. It was noticed that in the eye saccadic movement, the eye was not only rotating around vertical axis, but also performing a little rotation around coranal axis.

用高速摄影记录了正常人眼水平扫描运动时角膜中点的运动轨迹、眼球的转角等随时间的变化，发现眼球水平扫描运动时，不仅有绕垂直轴的转动，而且还有稍量绕横轴的转动。

The change of motor thrust ,deflection angle of thrust line with scarfed angle was investigated.

应用有限体积法建立了三维守恒型N-S方程组的数值求解器，对某非轴对称斜切喷管内流场开展了数值模拟计算，研究了斜切角度变化时引起的发动机推力及推力线偏转角变化。

The thesis illustrates the principle of the and its application in the system, establishes the simulation model of the vector control system of PMSM based on the EKF and successfully realizes the application of the speedless sensor in motor control. Firstly, based on the mathematic model of permanent-magnet synchronous motor, the PMSM vector control system is built. Secondly, the Extended Kalman Filter is designed for the on-line estimation of the speed and rotor position by only using measurements of the motor voltages and currents.

首先，基于PMSM的数学模型，建立了电机的矢量控制仿真模型；其次，设计了扩展卡尔曼滤波器，通过检测电机端电压、相电流对电机转速和转子位置进行在线实时估计，实现了PMSM的无传感器矢量控制；最后，在Matlab7.0环境下进行的系统仿真试验表明，该方法具有优良的转角跟踪特性和较好的转速跟踪特性，同时系统具有较强的抗负载扰动性能和较佳的控制性能。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。