数字信号

With the high speed development of Information and Computer Technology, Digital Signal Process technology has been a very key science gradually.

随着信息技术和计算机技术的飞速发展，数字信号处理技术已经逐渐发展成为一门关键的科学技术。

With the development of computer and high speed large integrated circuit, the applications of DSP become more and more important and it intends to be more perfect and effective.

而随着计算机、高速超大规模集成电路的发展，数字信号处理的应用也越来越重要，并趋于更加完善和有效。

The research of the Integrated Navigation System based on the microprocessors is a hotspot because of the highspeed development of the microprocessors technology.

随着计算机技术和数字信号处理技术的迅猛发展，基于微处理器的捷联惯性导航和全球定位系统的组合导航系统的设计成为目前研究的热点。

From the view of torque controlling strategy, the relation between the torque controlling strategy such as the electric current feedback method、 PWM open loop method etc and the vehicle driving way is analyzed firstly, then the conclusion could be drawn that the PWM open loop method has more advantages than the electric current feedback method when they are both used in the same vehicle which is direct driving by hubcap motor. Secondly, based on the electric motor mathematic model and its experiment, a new permanent brushless dc motor phase electric current detector method in which a digital signal processor and single current sensor are used is introduced.

从转矩控制策略角度来看，分析了电流反馈法以及开环PWM电压调速控制方法与车辆的驱动方式关系，得出了电机驱动电压受限的情况下，无论是从对车辆的动力性能影响还是从对车辆的驱动要求来讲，开环PWM电压调速控制方法较电流反馈法更适用于以轮毂电机直接驱动方式的两轮电动车中；其次，根据电机的数学模型以及电机试验波形，提出了一种利用数字信号处理器以及单个电流传感器检测三相永磁无刷电机电枢电流的新方法，这种方法具有较强的适应性、实时性，它可以根据控制系统的要求，适时地提供所需电流数据，是目前许多文章关于无刷电机相电流平波的重要技术基础。

Digital signal processor ; image processing ; video capture

数字信号处理器；图像处理；视频采集

A part of work in the digital image processor can be dealed with afterwards , which is using universal computer system.

还有一类数字信号处理必须在规定的时间内完成，很难想象用一个通用的计算机系统来完成这项工作。

Machine vision ; image acquisition ; image processing ; digital signal processor

机器视觉；图像采集；图像处理；数字信号处理器

Using the digital signal processor DSP image processing system as the main control unit, and uses two 1394 chips, respectively link layer and physical layer implementation.

采用了数字信号处理器DSP 作为图像处理系统的主控单元，并采用了两片1394 芯片分别实现链路层和物理层。

Experimental results show the algorithm is robust to common operations on digital audio signal,such as add noise,lossy compression,re-quantify etc,and inaudibility is satisfaction.

实验表明该水印算法对于叠加噪声，有损压缩，重量化等常见的数字信号处理具有较好的鲁棒性，同时，水印系统具有很好的不可听性。

For this reason, an optimal automatic timing control algorithm is proposed, that can restrain the switching frequency in a certain range to achieve the purpose of high efficiency and energy conservation. Taking such factors as inductive reactance at AC side, switching frequency, harmonic distortion rate and switching loss as well as the interaction among them into consideration, the formulas for inductive reactance and switching frequency are given; then by use of digital signal processor TMS320F2812, a prototype based on the proposed algorithm is implemented, and using this prototype the effectiveness and practicality of the proposed method are verified by experimental research and simulation.

文章提出了自动定时控制的优化算法，将开关频率限定在一定范围内，以达到高效节能的目的；综合考虑交流侧感抗、开关频率、谐波畸变率和开关损耗等指标，提出了主电路电感参数和开关频率的选择公式，并采用TMS320F2812数字信号处理器构造了试验样机，进行仿真和试验研究，其结果证明了该方法的有效性和实用性。

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。