【天津科技大学822】22年考研真题及解析
<div class="article-content uc-nf-fontsize-change-dom simple-ui"> <p class="imgbox"><span class="image-box"><img data-original="http://image.uc.cn/s/wemedia/s/upload/2022/c067635a0516b03027f451070601dcd4.png" src="http://image.uc.cn/o/wemedia/s/upload/2022/c067635a0516b03027f451070601dcd4.png;,4,png;3,700x.png" uploaded="1" data-infoed="1" data-width="1146" data-height="717" data-format="png" data-size="210608000" data-index="0" class="image-loaded" style="width: 700px !important; height: 437.958px !important;" heavypress="http://image.uc.cn/o/wemedia/s/upload/2022/c067635a0516b03027f451070601dcd4.png;,4,png;3,700x.png"><span class="share-import-title"></span></span></p><p data-track="1">已经到了考研强化的阶段,接下来这个专题会为大家整理名校信号与系统考研真题。每一套真题我都会给出他们的参考教材、课时对照,供大家查缺补漏!</p><p data-track="2"><strong><span><span>那么如何使用这个系列?</span></span></strong></p><p data-track="3">1. 大家在强化阶段,在这里找到和你报考院校对应的参考教材为同一本的考研真题,拿来优先练手,专题强化。</p><p data-track="4">2. 所有真题务必先做完,再去看解析。真题很宝贵,无论是题目质量还是考察方式都会优于市面上的模拟题,请务必珍惜。</p><p data-track="5"><span>本套试题考察的内容较为基础,只是需要在一些细节上多加留意,需把基础打牢相信即可获得不错的分数。</span></p><p data-track="6"><strong><span><span>第一大题</span></span></strong><span>是填空题,包括十道小题。其中第1-3和5小题考察冲激函数的相关性质,4小题考察系统性质的判断,6、7小题考察傅里叶变换和逆z变换的内容,8、9小题考察信号的直流分量计算以及周期性,第10小题涉及s域的终值定理。这十道题内容相对基础,重点要将各部分的公式和定理内容记牢,并理解到位</span></p><p data-track="7"><strong><span><span>第二大题</span></span></strong><span>计算题,包含5个小题。第1小题是s域求逆变换的题目,重点是掌握分式的因式分解,将原本的式子转换为常见信号的s变换,特别需要注意此题目需要讨论收敛域的范围;第2小题是抽样定理内容的考察,需要注意的细节是题目问的信号是经过尺度变换之后的;第3题是根据图像提示进行两个信号的卷积计算,利用卷积的微分和积分性质可以更方便的解答;第4题是根据收敛域求解逆z变换,需要注意不同的收敛域对应的时域序列的形式;第5题是求解连续周期信号的傅里叶级数,要首先计算出这个信号的周期,之后再进行转换。</span></p><p data-track="8"><strong><span><span>第三大题</span></span></strong><span>是综合题,包括6个题;</span></p><p data-track="9"><strong><span><span>第1题</span></span></strong><span>是时域根据微分方程以及相关输入信号和初始参数求解零状态、零输入和全响应,以及求解相应的系统函数和单位冲激响应。这类题型出错的重点往往更在于计算上,所以要注意计算的细节;</span></p><p data-track="10"><strong><span><span>第三大题的第2题</span></span></strong><span>是根据所给微分方程求系统的冲激响应,此题需要首先将所给等式中的卷积的形式提取出来,之后按常规套路做题即可。</span></p><p data-track="11"><strong><span><span>第三大题的第3题</span></span></strong><span>是求采样过程的输出信号,要掌握输入信号乘以冲激串采样之后的结果以及经过滤波器后的信号变化,通常可以画图来解答;</span></p><p data-track="12"><strong><span><span>第三大题的第4题</span></span></strong><span>是判断是否为无失真系统,需要根据幅度响应和频率响应来判断,无失真系统的幅度响应是一个与频率无关的函数,频率响应应该关于频率是一条倾斜的直线;</span></p><p data-track="13"><strong><span><span>第三大题的第5题</span></span></strong><span>是s域的系统函数相关题目,需掌握通过系统函数求解零极点的方法,以及通过系统函数写出系统的微分方程,并且求解系统的全响应;</span></p><p data-track="14"><strong><span><span>第三大题的第6题</span></span></strong><span>同样是关于s域的系统函数的相关题目,此题考察了s域系统稳定性的判断以及判断系统是否线性无失真。</span></p><p class="imgbox"><span class="image-box"><img data-original="http://image.uc.cn/s/wemedia/s/upload/2022/1dee5321c767a26920c3cb10e407107a.png" data-src="http://image.uc.cn/o/wemedia/s/upload/2022/1dee5321c767a26920c3cb10e407107a.png;,4,png;3,700x.png" src="//image.uc.cn/s/uae/g/1v/images/image-lazyload.png" uploaded="1" data-infoed="1" data-width="1280" data-height="1810" data-format="png" data-size="873449000" data-index="1" class="image-default-bg b-lazy" heavypress="http://image.uc.cn/o/wemedia/s/upload/2022/1dee5321c767a26920c3cb10e407107a.png;,4,png;3,700x.png" style="width: 700px !important; height: 989.844px !important;"><span class="share-import-title"></span></span></p><p class="imgbox"><span class="image-box"><img data-original="http://image.uc.cn/s/wemedia/s/upload/2022/8b4e6e0b5cfbc837aef11ef5b0d6f9a5.png" data-src="http://image.uc.cn/o/wemedia/s/upload/2022/8b4e6e0b5cfbc837aef11ef5b0d6f9a5.png;,4,png;3,700x.png" src="//image.uc.cn/s/uae/g/1v/images/image-lazyload.png" uploaded="1" data-infoed="1" data-width="1280" data-height="1809" data-format="png" data-size="864005000" data-index="2" class="image-default-bg b-lazy" heavypress="http://image.uc.cn/o/wemedia/s/upload/2022/8b4e6e0b5cfbc837aef11ef5b0d6f9a5.png;,4,png;3,700x.png" style="width: 700px !important; height: 989.297px !important;"><span class="share-import-title"></span></span></p><p class="imgbox"><span class="image-box"><img data-original="http://image.uc.cn/s/wemedia/s/upload/2022/7fd8999e57c30fddd7be0f0212782760.png" data-src="http://image.uc.cn/o/wemedia/s/upload/2022/7fd8999e57c30fddd7be0f0212782760.png;,4,png;3,700x.png" src="//image.uc.cn/s/uae/g/1v/images/image-lazyload.png" uploaded="1" data-infoed="1" data-width="1280" data-height="1810" data-format="png" data-size="616137000" data-index="3" class="image-default-bg b-lazy" heavypress="http://image.uc.cn/o/wemedia/s/upload/2022/7fd8999e57c30fddd7be0f0212782760.png;,4,png;3,700x.png" style="width: 700px !important; height: 989.844px !important;"><span class="share-import-title"></span></span></p><p class="imgbox"><span class="image-box"><img data-original="http://image.uc.cn/s/wemedia/s/upload/2022/7e646c45c21f9f7bee215f0127d67549.png" data-src="http://image.uc.cn/o/wemedia/s/upload/2022/7e646c45c21f9f7bee215f0127d67549.png;,4,png;3,700x.png" src="//image.uc.cn/s/uae/g/1v/images/image-lazyload.png" uploaded="1" data-infoed="1" data-width="1280" data-height="1809" data-format="png" data-size="542665000" data-index="4" class="image-default-bg b-lazy" heavypress="http://image.uc.cn/o/wemedia/s/upload/2022/7e646c45c21f9f7bee215f0127d67549.png;,4,png;3,700x.png" style="width: 700px !important; height: 989.297px !important;"><span class="share-import-title"></span></span></p><p class="imgbox"><span class="image-box"><img data-original="http://image.uc.cn/s/wemedia/s/upload/2022/05eea330116cb309f0e10b6cd25f91c8.png" data-src="http://image.uc.cn/o/wemedia/s/upload/2022/05eea330116cb309f0e10b6cd25f91c8.png;,4,png;3,700x.png" src="//image.uc.cn/s/uae/g/1v/images/image-lazyload.png" uploaded="1" data-infoed="1" data-width="1280" data-height="1810" data-format="png" data-size="616508000" data-index="5" class="image-default-bg b-lazy" heavypress="http://image.uc.cn/o/wemedia/s/upload/2022/05eea330116cb309f0e10b6cd25f91c8.png;,4,png;3,700x.png" style="width: 700px !important; height: 989.844px !important;"><span class="share-import-title"></span></span></p><p class="imgbox"><span class="image-box"><img data-original="http://image.uc.cn/s/wemedia/s/upload/2022/9ec4354bbff561fdce6dc2e492b7d67e.png" data-src="http://image.uc.cn/o/wemedia/s/upload/2022/9ec4354bbff561fdce6dc2e492b7d67e.png;,4,png;3,700x.png" src="//image.uc.cn/s/uae/g/1v/images/image-lazyload.png" uploaded="1" data-infoed="1" data-width="1280" data-height="1810" data-format="png" data-size="522549000" data-index="6" class="image-default-bg b-lazy" heavypress="http://image.uc.cn/o/wemedia/s/upload/2022/9ec4354bbff561fdce6dc2e492b7d67e.png;,4,png;3,700x.png" style="width: 700px !important; height: 989.844px !important;"><span class="share-import-title"></span></span></p><p class="imgbox"><span class="image-box"><img data-original="http://image.uc.cn/s/wemedia/s/upload/2022/bb1ab426b4ba89f8b4f666c62c331984.png" data-src="http://image.uc.cn/o/wemedia/s/upload/2022/bb1ab426b4ba89f8b4f666c62c331984.png;,4,png;3,700x.png" src="//image.uc.cn/s/uae/g/1v/images/image-lazyload.png" uploaded="1" data-infoed="1" data-width="1280" data-height="1809" data-format="png" data-size="678425000" data-index="7" class="image-default-bg b-lazy" heavypress="http://image.uc.cn/o/wemedia/s/upload/2022/bb1ab426b4ba89f8b4f666c62c331984.png;,4,png;3,700x.png" style="width: 700px !important; height: 989.297px !important;"><span class="share-import-title"></span></span></p><p class="imgbox"><span class="image-box"><img data-original="http://image.uc.cn/s/wemedia/s/upload/2022/08235fd7a84709daa29f04f038aafe02.png" data-src="http://image.uc.cn/o/wemedia/s/upload/2022/08235fd7a84709daa29f04f038aafe02.png;,4,png;3,700x.png" src="//image.uc.cn/s/uae/g/1v/images/image-lazyload.png" uploaded="1" data-infoed="1" data-width="1280" data-height="1810" data-format="png" data-size="837681000" data-index="8" class="image-default-bg b-lazy" heavypress="http://image.uc.cn/o/wemedia/s/upload/2022/08235fd7a84709daa29f04f038aafe02.png;,4,png;3,700x.png" style="width: 700px !important; height: 989.844px !important;"><span class="share-import-title"></span></span></p><p data-track="16"><strong>留个点赞和在看再走呀~</strong></p><p data-track="17"><strong>你们是我更新的唯一动力!</strong></p><p data-track="18"><strong>请做完再看解析哦</strong></p></div><br>最后别忘了到沪学网下载免费课程!
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