查询词典 dsp

Firstly it introduces relevant technical developments and trends, the task background and significance of the study, then analyzes hardware circuit of using image sensor as images collected, and utilizes the SAA7113 chip to deal with video image beforehand, SAA7113 lets the output of standard digital video signals to storage in FIFO memory, and decodes clock signals, Highlighted microprocessor control external circuit design of false coin and counting, and DSP control external circuit design, such as memory expand ect;Finally analyses CPLD as logic controller to control the logic and scheduling of some part ,and gives the undee emluator of some logic circuit.

文章首先阐述人民币智能分捡器相关技术的发展状况、发展趋势以及课题背景与研究意义；然后设计了利用图像传感器采集人民币图像输出模拟视频信号的硬件电路，以及利用视频解码芯片(SAA7113)对模拟视频图像进行预处理，SAA7113输出的标准数字视频信号存入FIFO存储器，同时还解码输出场、行同步信号、像素时钟信号送入CPLD等部分电路；重点设计了单片机控制验钞、点钞等外围电路，以及DSP控制的外围电路，如存储器的扩展等部分；最后完成CPLD对部分器件的逻辑和时序控制设计，并对逻辑电路的功能进行仿真，仿真结果令人满意。

Secondly, the operating principle and the mathematical model and the control method about the three-level voltage source high power factor PWM converter are analysed .The generation of the PWM trigging pulse control signal are introduced emphatically. On the basis of this, the hardware experimentation circuits are built with DSP and CPLD, and the trigging pulse signal is generated exactly. The feasibility of the circuit is verified by the experiment result.

其次，分析了三相电压型变流器的原理、模型、控制方法并着重研究其PWM 触发脉冲控制信号发生技术，并以DSP、CPLD 等芯片搭接了硬件试验电路，产生了正确地触发脉冲信号，试验结果证明了设计的合理性。

In order to realize, the integrated testing of dynamic parameters, real-time and in-system inspection, and diagnoses of fault of engine, at the same time considering the universal and specific performance, a new-fashion real-time testing system design for the integrated parameters of engineer is proposed based on the technology of parallel procession of multi-DSP and virtual instrument.

为了实现发动机动态参数的综合测试、实时在线检测和故障诊断，综合考虑其通用性和专用性，提出了一种基于多DSP并行处理和虚拟仪器技术的新型发动机综合参数实时测试系统设计，重点阐述了系统的硬件结构和软件框架设计，并对系统实时、远程故障诊断进行了探讨。

Finally, this thesis also presents an integrated design of a dual core embedded system with a 32-bit RISC, Intel?? StrongARM SA-1110, and ADSP-2181 DSP.

最后，本篇论文还提出一个基於32位元RISC及DSP的双核心嵌入式系统整合设计。

The feed switch is designed with double-controller of single-chip microcomputer and DSP, so as to separate data collection with fault judgment, which improves running speed and intelligence level. And the feed switch has functions of overload protection、open-phase protection、short circuit protection、unbalance protections、leakage locking protection、leakage protection and selective leakage protection.

该馈电开关采用单片机和DSP双控制器设计，实现了数据采集处理和故障判断功能的分离，大大提高了运行速度和智能化水平，还具有过载、缺相保护、短路保护、不平衡保护、漏电闭锁保护、漏电保护和选择性漏电保护功能。

The Mixer core scales, sums and reroutes the data from the other processing cores, and the final DSP core is a SIMD programmable processor providing both time and frequency domain signal processing.

最后一个就是DSP核心，他是一个SIMD可编程处理器，提供了时域和频域信号处理。

In Chapter 2, the character and operating principle of the new topology are discussed. Design of a three phase five-level converter prototype and a digital control scheme with DSP and CPLD are proposed.

第二章详细分析了这种新型拓扑的结构特点及工作原理，给出了三相五电平样机设计方案，并针对新型拓扑样机给出了基于DSP和CPLD的全数字控制方案。

The paper investigates both block-type pilot linear minimum mean square error algorithm and IEEE802.16 OFDM channel estimation analysis. Simulation results confirm the block-type pilot structure is more suitable for IEEE802.16 system. An optimal pilot setting algorithm, based on space frequency domain, is explored and the pilot chart is presented. The proposed algorithm finds its application in MIMO-OFDM. Simulation results show the algorithm presents a good approximation to the perfect channel state information curve, with about 2dB difference in SNR. The simulation results also demonstrate the algorithm achieves fairly high stability in the environment of fast fading, performance of the proposed algorithm is better that of pilot training channel estimation.3. Taking into account the characteristics of IEEE802.16 OFDM system, OFDM system simulation platform is constructed in Matlab, exploiting simulink as a tool. OFDM modulation and demodulation simulation system are configured on LabVIEW platform. All the system signal processing is simulated, including defining system parameters, designing modulation model, and verifying all the proposed algorithms under different environments, such as white Gaussian noise, multi-path fading, with or without guard interval etc. Bit error performance is evaluated. The research provides valid theoretical basis for practical OFDM system performance evaluation.4. Taking advantage of software radio, the paper designs a hardware platform with both 256-IFFT/FFT and 512-IFFT/FFT OFDM schemes co-existing in one platform. You can predetermine one from the two schemes to carry out almost the same model function with different system performance and parameter setting.5. Referring to IEEE802.16 standard, the paper proposes a design method for generating signals and frames suitable for laboratory investigations implemented in laboratory environment.6. Based on 6701evm digital evaluation card, combined with analogy front-end, the paper designs a DSP software model to deal with baseband signal processing. An overall OFDM scheme, with modulation and demodulation function, is accomplished.

讨论分析了MIMO-OFDM中一种基于空频域的最优导频设置算法，给出了导频图案，通过仿真实验表明，该算法与理想的信道状态信息曲线非常接近，信噪比差距约在2dB左右，并且在快衰落条件下具有较好的稳定性，其性能要优于基于前导训练的信道估计方法。3、根据IEEE802.16OFDM系统特点，论文分别在Matlab中应用Simulink工具构建OFDM系统仿真平台、在LabVIEW平台上实现了OFDM调制解调仿真系统，模拟了整个系统的信号流程，进行了OFDM仿真系统参数的选择和调制模块的仿真设计、论证各算法性能，并根据各种不同的条件：例如高斯噪声、多径衰落、有无保护间隔等，对系统的误码特性进行了评估，为正确评价实际OFDM系统的性能提供了有效的理论依据。4、论文以软件无线电思想作为指导，提出了以256点IFFT／FFT为核心和以512点IFFT／FFT为核心的两种OFDM算法模式并存于同一个硬件平台、且可预选的方案，它们在参数选取和性能指标上有所差异，均实现了相似的模块和功能。5、论文参考IEEE 802.16无线网络标准的参数设置，针对本设计系统的应用环境和系统硬件的性能速率，提出了一种应用于实验室环境的信号结构、帧格式等参数设计。6、论文基于TI公司的6701evm数字评估板卡，结合模拟前端搭建数字中频平台，设计了基带处理的DSP软件模块并进行系统调试，基本实现了一套完整的OFDM调制解调方案。

the distributed power plant's power conditioner system adopts an on-grid inverter to convert dc to ac and putout. and its cpu is a fixed-point dsp.

分布式电站的功率调节系统采用并网逆变器进行直流/交流电转换输出，其核心处理器是定点型dsp器件。

The hardware includes four parts: preposed circuit, sampling circuit, DSP circuit and display circuit. The software includes four parts: main program, FFT program, power algorithm program.

硬件分为四个部分，前置电路、采样电路、DSP电路和显示电路；软件也分四部分，分为主程序、采样子程序、FFT子程序和功率电能计算子程序。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失