The simulation results reveal that the method is effective . finally , in order to improve the precision , amplifying circuit and low pass filter are designed based on theoretical analysis 最后,本文从提高系统精度的角度出发,在理论分析的基础上,设计出放大电路和低通滤波电路,并利用pspice软件对电路进行了仿真。
Lastly , we establish the digital control system which includes signal process circuit , a / d . pwm circuit and amplify circuit , etc . the problem of unsuitable time order between dsp and counter 8254 - 2 is solved in this paper 第三，建立了以dsp为核心包括信号预处理、 a d转换、脉宽调制( pwm ) 、功放电路在内的数字控制系统。
The analysis of the weak signal circuit , amplifying circuit of the signal and power circuit in the thermal conductivity detector has been done , and the characteristic of the circuits with the rhenium tungsten filament is designed 针对气相色谱热导检测器的弱信号失真和电源不稳定问题，研究与设计热导检测器的弱信号测量电路、信号放大电路以及电源电路。
The mcml circuits output low swing signal , while it is necessary to amplify it so as to interfacing the binary signal . an low - swing - signal - amplifying circuit is proposed in this dissertation to realize the interface 由于mcml电路输出的是小摆幅信号，论文提出了一个三值放大电路，将三值mcml电路的输出进行放大，以便进一步转换，实现和二值信号的接口。
The amplitude discrimination circuit , the filter circuit and the amplifying circuit are designed to transform ac analog signal that the eddy current sensor output to dc analog signal , thus , the dc analog signal can be received by ad converter 传感器输出的测量信号是中频的交流模拟信号，在下位机系统设计了鉴幅、滤波、放大电路将测量信号转化为模数转换器可以接受的直流信号。
Two methods for acquiring signals out of the conductance - linearised seasor have been presented with comparison of the error analysis . the superlority of applying “ integrated operational amplified circuit ” has been concluded and the method could be broadly adopted in practice 出了电导线性化标定的传感器信号的两种采集方法，进行了误差分析比较，并得出了利用“集成运放方法”的优越性
Capacity variation of two capacitance of measuring membrance is also proportion to pressure . by amplified circuit the would be linearly converted to 420 ma dc two wire system current voltage or digital hart output signal high - speed addressable remote sender data road 测量膜片的两电容固定极板的被放大电路线性地转换成420ma dc的二线制电流电压或数字hart高速可寻址远程发送器数据公路输出信号。
In the course of exploiting the system hardware , we adopt the low frequency sine wave excitation technology whose frequency is alterable , and scheme out the new signal conversion & amplifying circuit , the new lcd circuit and the new system anti - interference circuit 在系统硬件电路的开发中，我们采用了频率可调的低频正弦波励磁技术，并设计出新颖的信号转换放大电路、液晶显示电路和系统抗干扰电路。
The thesis analyses the problems on the noise of apd photoelectric receiving system . author designs apd laser signal receiving system circuits , front amplify circuit , controlling time - series logic circuits , dc / dc transform circuits . and takes apd bias voltage fuzzy control 分析了apd光电接收系统的噪声问题，并对apd激光信号接收系统电路、前置放大电路、控制时序逻辑电路、 dc / dc变换电路进行了设计，采取了apd偏压模糊控制。
