查询词典 speed controller

The high speed advantage of FPGA's operation is made hard to demonstrate for the inconsequence in structural arrangement. The pipeline technology had well solved this problem. We presents a new pipeline optimization technology of inventer's control system based on FPGA,and completed the optimization design of the inventer controller. Analyzed the design process in detail and offered a kind of thought for the people who devoted to FPGA's application in power electronic field.

分析了"流水线操作"等设计优化问题，并针对逆变器控制系统中，控制系统算法呈多层结构，且层与层之间还有数据流联系，其执行顺序和数据流的走向较为复杂，不利于直接采用流水线技术进行设计的特点，提出一种全新的"分层多级流水线"设计技术，有效地解决了复杂控制系统的流水线优化设计问题。

The circuit speed and performance are improved due to the new structure. MPEG2 video decoder includes Inverse Discrete Cosine Transformer, Motion Compensation, Variable Length Decode, Inverse Quantization and System Controller etc.

研究了解码器各个功能块VLSI实现的新方法，从电路结构方面进行探索，有效地减小了电路实现规模，而且在速度、性能等方面比文献报道有所提高。

Experiment results show that the electrically controlled throttle developed has high response speed and good control stability, which can imp lement accurately the engine torque command from main controller.

台架联合调试结果表明，所开发的电控节气门系统具有较高的响应速度和控制稳定性，可准确执行主控制器的发动机转矩控制指令。

In this paper, the theory, algorithm, and experiment of automatic object detection and tracking are studied in depth. It is firstly pointed out that the essential of Mean Shift method is a special Newton-Gaussian method. A new method named Fast Mean Shift is established to stretch the conservative step of Mean Shift method. The convergence and validity of this new method are proved in theory. And it is also proved that the convergence speed of Fast Mean Shift is faster than that of Mean Shift. The contrast experiments of searching the maximum possibility density of random of data sets in plane and 3D space are done. The results show that this new method can reduce the iterations greatly. A new object tracking method based on Fast Mean Shift is built to improve the object tracking performance, which is shown in the face tracking experiment with the tennis sequence provided by the Ohio State University, and the car tracking experiment with the car sequence provided by Kalsruhe University. The face trcking experiment with highly noised images show that the object tracking method based on Fast Mean Shift has strong anti-jamming ability. A new fast color object detection technology based on characteristic color is established, which use characteristic color distribution to compute the characteristic color vector of any area in an image quickly. With the high performance search method, the fast object detection is achieved. At last, using object tracker based on Fast Mean Shift and color object detector based on characteristic color with the Kalman filter, PID controller, searial communication and other technologies, automatic object detection and tracking system with control system is built. The availability and anti-jamming ability of this system are verified by some object detection and tracking tests in different scenes.

本文对目标自动识别与跟踪进行了理论、计算、试验三方面的深入研究，主要包括：首次指出了目标跟踪技术中常用的均值迁移方法的本质为一种特殊的高斯-牛顿方法，改进了均值迁移方法步长取值保守的弱点，建立了快速均值迁移方法，证明了该方法的收敛性、有效性以及收敛速度优于均值迁移方法；进行了平面和3维随机分布数据集的最大概率密度搜索对比试验，试验结果表明，快速均值迁移方法大大减少了迭代次数；建立了基于快速均值迁移的目标跟踪方法，利用俄亥俄州立大学提供的乒乓球序列图像和卡斯鲁厄大学的汽车序列图像，对人脸和汽车目标跟踪性能分别进行了对比试验，并进行了高噪声人脸图像目标跟踪试验，结果表明，基于快速均值迁移的目标跟踪方法有效提高了目标跟踪性能，具有很强的抗干扰能力；建立了一种新型彩色目标自动识别方法，采用特征色彩分布函数实现了对任意图像区域特征色彩矢量的快速计算，建立了高效的搜索方法，实现了彩色目标的快速识别；将基于快速均值迁移方法的目标跟踪方法、基于特征色彩的目标识别方法与卡尔曼滤波、PID控制、串行通讯等技术结合，建立了带有控制系统的快速目标自动识别与跟踪系统，并在不同场景下进行了目标自动识别与跟踪试验，验证了快速目标自动识别与跟踪系统的有效性和抗干扰能力。

Problems that result from high-speed movement of the equipment in measurement unit, including image mistiness, repetition and skip, are deeply analyzed. And the processing time is tested. The result indicates that image processing algorithm is accurate, fast, and robust. The simulation result of fuzzy controller, which is gained through Matlab, indicates that the fuzzy control system can accurately determine cutter's number. The experiment of cutter indicates that the resistance thread can meet the demand.

分析了检测单元中装备高速作业带来的图像模糊和重复遗漏问题，测试了图像处理算法的时间，结果表明设计的算法准确、快速、适应性强；利用Matlab对模糊控制算法进行仿真，仿真结果表明控制算法能准确地确定刀具编号；切破刀具的试验表明设计的电阻丝刀具能满足要求。

Introduced the principle of this angel measuring system first. Then discussed the interface circuit between the AD2S82A and the DSP controller in detail.At last,gave a multi channel and high speed interface circuit which is composed of 3-state latches and monostable multivibratores.

介绍了这种测角系统的组成和工作原理，研究了它与DSP处理器的接口问题，并利用三态锁存器和单脉冲触发芯片，设计出了一种适用于多通道系统的高速接口电路，解决了DSP一次读取多片AD2S82A所造成的大量时间延迟问题。

The speed controller presented here is designed to drive a simple cheap starter motor from a car, which can be purchased from any scrap yard.

这里介绍的速度控制器的设计，使它们从一车，它可以从任何一个简单的废料场购买廉价起动电机。

TMS 320C30 can implement quick floating-point mathematic operation and can provide large on-chip RAM and ROM space,high speed instruction cache,DMA controller,multi-address generators and suporting high level language programming.

TMS320C30数字信号处理器能实现快速浮点数学运算，并提供了大的在片RAM和ROM空间、高速指令缓冲器、DMA控制器、多地址发生器和支持高级语言编程。

But it is difficult to get satisfied control characteristics by using normal linear proporition integral controller due to the high nonlinearity between speed and current or torque.

但它的转矩和转速之间具有强烈的非线性关系，采用常规线性PI控制器难以得到令人满意的控制特性。

Permanent Magnet Synchronous Motor has the feature of strong nonlinear, coupling and parameter time-varying. The Proportional and integral part of traditional PI controller is fixed and unable to meet high precision requirements of PMSM speed control.

永磁同步电机是具有强非线性、强耦合和参数时变特性的被控对象，传统PI 控制方法作为一种线性控制其比例、积分环节的参数固定不变，不能满足永磁同步电机对高精度的要求。

We were cousins—his grandfather was King of Scots,and his great-grandfather was Henry VII of England.

我们是堂姐弟——他的祖父曾是苏格兰国王，他的曾祖父是英格兰的亨利二世。

I do want to help you, but I am in a quandary now!

我是想帮你，但是我现在左右为难啊！