激励信号

数字调频多波形可编程激励信号发生器

A digit modify frequency programmable stimulus signals generator with multi wave shapes

研究了瞬态测试故障诊断的激励信号的优化。

Studied how to optimum the transient testing stimulus .

在Visualc++6.0环境下，研究了结构健康监测中高速数据采集与激励信号输出。

High-speed data acquisition and actuating signal output under the environment of Visual C + + 6.0 are studied .

基于FPGA的电阻抗成像系统激励信号源

FPGA Based Signal Generator in EIT System

介绍一种产生窄脉冲调制激励信号，并通过它激励声表面波器件（SAW）产生所需线性调频信号的方法。

This paper introduces a method for generating narrow pulse modulated exciting signal , which drives SAW device to generate the chirp signal .

针对人体电阻抗成像系统的要求，设计并实现了一种基于FPGA的激励信号源，输出频率范围为0~1.5MHz。

A FPGA based signal generator is designed and implemented . The frequency covers from 0 to 1.5 MHz .

基于DDS技术的涡流检测激励信号源

Eddy current excitation signal source based on DDS technology

在输入一定激励信号的情况下，把模糊控制半主动悬架与被动悬架及PID控制半主动悬架的工作情况进行了比较。

Under the input of certain actuating signals , FFC semi-active suspension is compared with non-active suspension and PID control semi-active suspension .

设计了一种应用DDS技术的多路超声相控阵列激发电路，该电路可以产生任意波形的激励信号。

A multi-route emission circuit of ultrasonic phased array is designed in this paper .

DSP主要负责激励信号的产生，模拟信号的采集、处理等任务。

DSP was mainly responsible for the generation of signals , the acquisition of analog signals , the processing of the acquisition and so on .

本设计结合课题需要，采用了1比特数字功放的实现方案，利用DSP实现了1比特激励信号的输出。

In this thesis , how to design the 1-bit amplifier is introduced , and the main task is to achieve the pumping signal using DSP .

本文将讨论Sigma-Delta技术用于产生校准激励信号源。

Sigma-Delta technology will be used to generate stimuli signals .

采用直接数字合成（DDS）技术产生高精度激励信号源，用相敏解调方法实现数据获取。

Based on the DDS technique , the exciting signal source has high accuracy , and the data can be acquired by phase-sensibility demodulation .

在激励信号为有意调制变化的窄带信号时，提出一种多通道相关指纹识别（Multi-ChannelCorrelationFingerprinting；MCCF）方法。

When the driven signal is narrow band with changeable intentional modulation , a Multi-Channel Correlation Fingerprinting ( MCCF ) method is proposed .

该RLC数字电桥，利用DDS（直接数字频率合成）方法，产生波形好，幅值稳定的正弦波，作为测试激励信号；

In this system , DDS ( direct digital synthesis ) is applied to produce good wave and stable amplitude sine wave as test signal .

选择了合适的涡流传感器，设计了激励信号源、放大电路、传感器电势补偿电路、正交参考源、相敏检波器、滤波以及隔离等外围电路，最后制作了PCB电路板。

We select the appropriate eddy current sensors , and designed the signal source , amplifier , sensor voltage compensation circuit , orthogonal reference source , phase-sensitive detector , filtering and isolation peripheral circuits .

在磁感应成像（MIT）系统中，组织电导率和激励信号与检测信号之间的相位差成正比。

In the magnetic induction tomography ( MIT ) system , the electrical conductivity of biological tissue is direct proportion to the phase difference between the excitation signal and the detection signal .

详细论述了高频医学电阻抗断层成像（EIT）系统设计的关键技术，其中包括激励信号源、电压控制电流源、模拟开关阵列以及信号解调等环节。

The key technology of high-frequency medical EIT system is presented in detail , i.e. the signal generator , voltage controlled current source , analog switch array and signal demodulation .

该控制器以系统动态误差和给定信号量作为CMAC的激励信号，并与自适应线性神经元网络相结合构成系统的复合控制。

Combining it with the adaptive linear neuron network , the multiplex control strategy takes the dynamic errors and given signals of the system as input signals to the CMAC neural network .

将脉冲激励信号应用于EMT系统，选取不同物场模型进行实际测量，对8个检测线圈中响应信号的特征参数进行测量及定性分析。

Experiment on EMT system with impulse excitation has been done . At different object fields , the response curves of 8 coils are measured and the qualitative analysis was made .

本文在文献[1]基础上，以非零主导极点模型代替开关电容（sc）电路中的非理想运放，得到连续和分段恒定激励信号且sc网络拓扑无限制条件下的精确分析方法。

We consider the nonideal Op-Amp in sc circuit as a dominating model , the precise analytical ways are given for no restriction sc circuit in topological construction and with arbitrary input signals based on reference [ 1 ] .

由于IPMC和PVDF位置接近，激励信号和感知信号产生了馈通耦合问题，提出了一个在实时操作上的巨大的挑战。

The problem of feed-through coupling from the actuation signal to the sensing signal , arising from the proximity of IPMC and PVDF , presents a significant challenge in real-time implementation .

该控制器采用动态误差作为CMAC的激励信号，从而使基于CMAC的控制器跟踪连续变化的信号成为可能。

The proposed controller adopts the dynamic and desired errors of the system as input vectors to the CMAC . This feature qualifies the CMAC-based controller to track continuous variable signals such as sinusoidal wave .

本文首先利用Volterra级数分析非线性模拟电路的频率响应，然后研究了如何从频率响应提取故障特征。频率响应法诊断故障的关键是激励信号的频率设计。

This dissertation researched the character of the frequency response of nonlinear analog circuits with Volterra series , and presented a method of how to extract the fault signatures from frequency response of the nonlinear analog circuit .

在硬件电路中，设计并实现了各个电路模块，包括基于DDS的高频率稳定性激励信号源模块、功率放大电路、前置差分放大电路、高频鉴相电路以及主控电路。

In hardware part , every circuit components has been fabricated , such as high frequency stability signal source based on DDS , power amplification circuit , differential amplifier circuit , high frequency phase detection circuit and main control circuit .

LF微分声门波模型是分析嗓音源的一个重要的参考模型，它与实际的声门波形通过时域参数相对应，其分析所得的模型参数可用来合成声门激励信号。

LF derivative glottal flow model is an important reference model in analyzing voice source , which is related to actual glottal waveforms via the timing parameters . Analysed parameters of the model can be used to synthesize glottal excitation signal .

因此，本文针对非线性电路的特点，利用Volterra级数和神经网络等理论系统的研究了非线性模拟电路自动故障诊断系统结构，故障特征的提取方法和测试激励信号参数优化方法。

Therefore , this dissertation studied the structure of nonlinear analog circuits fault diagnosis system and the methods of how to extract the fault signatures from the respose of the circuit based on Volterra series and neural networks .

实验结果表明，优化后的激励信号在结构中能激发出单一模式的Lamb波（S0模式），有效地抑制了多模式现象的出现。

Research results show that the single mode Lamb wave ( S_0 ) can only be generated in the structure with the optimal excitation signal to realize the suppression on the multiple Lamb wave modes .

介绍了相控线阵声波测井辐射器的工作原理，根据辐射器各个阵元的性能参数设计了两种供实验使用的激励信号源，即5通道Burst信号源和4通道脉冲信号源。

The operating mechanism of the phased array acoustic logging transmitter was discussed . Based on the performance parameter of the element of the phased array transmitter , two kinds of exciting signal sources were designed which were 5-channel Burst signal source and 4-channel impulse signal source .

专用信号发生器为UUT提供模拟激励信号，矩阵开关和适配器完成不同信号间切换。

The analog prompting signal is provided to UUT by its special waveform generator . The switch during different signals is completed with matrix switches and adapters .