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        "电路模型探究装置（G题）",
        "【本科组】",
        "一、任务",
        "（4）基本要求（3）中，探究装置可设置并输出100Hz~3kHz频率范围内的正弦信号，依",
        "设计并制作RC有源滤波电路（简称已知模型电路）和电路模型探究装置（简称探究装置）。",
        "据基本要求（1）中的H（s）确定输出信号幅度，使得“已知模型电路”输出电压峰峰值为设定",
        "基本要求中，探究装置可自动调节本身的输出信号并加给“已知模型电路”，使该电路按要求",
        "值（藏围1-2V、步长01V），要求该电路输出电压与设定值的相对误差绝对值不大于5%",
        "输出信号：发挥部分中，探究装置可对测评现场提供的“未知模型电路进行自主学习、建模",
        "并根据该电路输入端的信号推理生成与该电路相同的输出信号",
        "2.发挥部分",
        "（1）测评现场提供由RLC元件（各1个）组成的“未知模型电路”。",
        "",
        "二、要求",
        "按照图3所示，探究装置连接该电路的输入和输出端口，对该电路进行",
        "1.基本要求",
        "自主学习、建模（不可借助外部测试设备），2分钟内完成学习建模，显",
        "探究装置",
        "（1)在单独的电路板上搭建电压传递函数为H（s)=",
        "10-*x²+3×10\"*s+1",
        "的“已知模型电路”。",
        "示“未知模型电路”的滤波类型。",
        "由信号发生器输入频率100Hz-3kHz、峰峰值1V的正强信号，使用示波器测量该电路输出中",
        "图3学习、建模",
        "压幅度，如图1所示，要求该电路输出电压幅度与传递函数Hs）表征的输出电压幅度的相对误",
        "（2）学习建模完成后，断开探究装置和“未知模型电路”的端口连接，将信号发生器接",
        "差绝对值不大于10%.",
        "入探究装置和“未知模型电路”的输入端口（探究装置输入",
        "信号发生器",
        "已知电话",
        "示波器",
        "电阻不小于100kQ），如图4所示，探究装置能根据信号发",
        "示波器1",
        "2",
        "图1用器测试“已知模型电路",
        "生器的输出信号推理生成与“未知模型电路”相同的输出信",
        "未知模型电路",
        "（2）探究装置能产生正弦信号，要求频率可设置（步长100Hz），最高频率不小于1MHz",
        "号，要求探究装置和“未知模型电路”的输出信号相比波形",
        "频率相对误差绝对值不大于5%：各频点输出电压峰峰值的最大值不小于3V",
        "无失真、在示波器上能连续同频稳定显示（相位无要求），",
        "发生器",
        "信号",
        "探究装置",
        "（3）将探究装置的输出端连接“已知模型电路”的输入端，如图2所示，设置探究装置",
        "两者峰峰值相对误差绝对值不大于10%",
        "输出1kHz的正弦信号，并依据基本要求（1）中的H（s）确定输出信号幅度，使得“已知模型电",
        "信号发生器的输出为频率1kHz~50kHz（步长200Hz）",
        "图4装置与未知模型电路输出比对",
        "路输出电压峰峰值为2V.要求该电路输出电压与设定值（2V）的相对误差绝对值不大于5%",
        "峰峰值2V的周期信号，类型分别为：正弦波、矩形波（占空比10%~50%、步长5%）和其他",
        "保置",
        "CoR",
        "波器",
        "周期信号。",
        "图2探究装置控制“已知模型电路”",
        "（3）其他。",
        "AD-DC供电",
        "跟随器",
        "偏置电路",
        "串口屏",
        "加法器",
        "STM32",
        "AD9959",
        "信号源",
        "调理电路",
        "跟随器",
        "示波器",
        "放大器",
        "维电器",
        "已（未）知模型电路",
        "示波器",
        "偏置电路",
        "跟随器",
        "加法器",
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