查询词典 frequency response

Measurement system of ultra wide band frequency response based on optical heterodyne technique.

基于光外差技术的超宽带频率响应测量系统。

This invention relates to a DC linear motor digital controller including a central processor circuit, a data memory, a program memory, an A/D conversion circuit, a D/A conversion circuit, a linear shift orthogonal code pulse signal circuit, a signal isolation circuit, among which, the center processor circuit is composed of a special DSP chip controlled by the motor, a complicated programmable logic device CPLD combining with a peripheral expanding circuit, said digital controller fully utilizes the motor to control the special DSP chip to integral DSP kernel CZXLP and the rich external circuit in a single chip to make up of a digital controller for controlling high frequency response DC linear motor with small volume, low dissipation and high reliability.

高频响直流直线电机数字控制器，属于电机自动控制技术领域，目的在于获得快速、高精度往返运动的控制效果，实现高频响直流直线电机的精密位置跟踪控制功能。本发明包括中央处理器电路，数据存储器，程序存储器，A/D转换电路，D/A转换电路，直线位移正交编码脉冲信号电路，信号隔离电路；中央处理器电路由一个电机控制专用DSP芯片，复杂可编程逻辑器件CPLD，结合外围扩展电路组成。该数字控制器充分利用电机控制专用DSP芯片将高性能DSP核C2xLP和丰富的功能外设电路集成在单个芯片上这一特点，构成了一个体积小、功耗低、可靠性高和功能比较齐全的高频响直流直线电机控制用的数字控制器，使系统的整体成本大大降低。

By using transmission line matrix method, the simulation and analysis for frequency response of interdigital capacitors in metal semiconductor metal photodetector is described.

介绍了利用传输线矩阵方法模拟和分析金属-半导体-金属光电探测器指栅电容的频率响应。

RESULTS The trend of dynamic frequency response of piezoelectric coagulation corresponded with the inverse S curve F =（f0-△f）＋△f/1＋e^（t-t0）/dtderived from theory according to the change regularity of the viscosity and density in the reaction system.

结果 根据反应体系黏度密度变化规律，理论推导出体外凝血反应过程，中压电频率动态响应规律符合F=（f0-△f）＋△f/1＋e^（t-t0）/dt等‰模型；根据该模型建立了新的反S拟合曲线法；与既有的最大拟合曲率法相比，前者检测速度更快（P〈0.01），重复性更好（P〈0.01）。

This allows frequency response peaking elements to be added, multiple input inverting summing circuits to have greater bandwidth, and low-power line drivers to meet the demanding require- ments of studio cameras and broadcast video.

这使得频率响应峰值要添加，多输入反相总结电路元件有更大的带宽，低功耗的线路驱动器，以满足要求需要，对演播室摄像机和广播视频目。

The high overload and wide frequency response will be produced in the process of irruption of penetrator weapon,so a micromachined capacitance accelerometer is brought forward to measure its overloading parameters.

针对侵彻武器测试过程中冲击过载大和频率范围宽的特点，提出了一种微机械电容式加速度计结构，结构中采用分布在整个芯片上的小电容阵列来代替位于中间的单个大电容器。

Aiming at this problem, we studied the seismic low-frequency response of reservoir.

为此，开展了储层的地震低频响应研究。

The 256 product sound low, the low-frequency response of the solid products.

256个产品的声音很低，低固体产品的频率响应。

The power spectrum density and mean square value of acceleration at every output position including the driver's seat are computed by means of solving the frequency response function, so as to show the changes of vibration magnitude through parameter-transformation.

在计算中除考虑了多点输入的自谱及前后轮之间的互谱外，还根据有关路面资料考虑了左右轮之间的互谱。结合乘坐舒适性研究，绘出了座椅振动量随各参数变化的一些规律，可为今后设计工作参考。

Subsets of frequency response are physical microphonics, electronic ringing and oscillation, and acoustic ringing.

频率响应可分为物理微音效应、电子装置鸣响和摆动、声鸣响三组。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐