1.何为稳定性，线性控制系统的稳定性有何特征？
2.已知单位负反馈系统的开环传递函数为：，试应用劳斯判据确定欲使闭环系统稳定时开环放大倍数K的取值范围。答案拍照上传
3.设系统特征方程为；试用劳斯稳定判据判别系统稳定性，并确定在右半平面根的个数及纯虚根。答案拍照上传https://wkrtcs.bdimg.com/rtcs/image?w=141&md5sum=db445dc3cd2d12f3e6b2a8fa561fd96d&sign=aa808b2c19&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=22&ipr=%7B%22w%22%3A141%2C%22h%22%3A44%2C%22dataType%22%3A%22gif%22%2C%22c%22%3A%22word%2Fmedia%2Fimage1.png%22%2C%22t%22%3A%22img%22%7Dhttps://wkrtcs.bdimg.com/rtcs/image?w=244&md5sum=db445dc3cd2d12f3e6b2a8fa561fd96d&sign=aa808b2c19&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=22&ipr=%7B%22w%22%3A244%2C%22h%22%3A21%2C%22dataType%22%3A%22gif%22%2C%22c%22%3A%22word%2Fmedia%2Fimage6.png%22%2C%22t%22%3A%22img%22%7D
2.已知单位负反馈系统的开环传递函数为：，试应用劳斯判据确定欲使闭环系统稳定时开环放大倍数K的取值范围。答案拍照上传
3.设系统特征方程为；试用劳斯稳定判据判别系统稳定性，并确定在右半平面根的个数及纯虚根。答案拍照上传https://wkrtcs.bdimg.com/rtcs/image?w=141&md5sum=db445dc3cd2d12f3e6b2a8fa561fd96d&sign=aa808b2c19&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=22&ipr=%7B%22w%22%3A141%2C%22h%22%3A44%2C%22dataType%22%3A%22gif%22%2C%22c%22%3A%22word%2Fmedia%2Fimage1.png%22%2C%22t%22%3A%22img%22%7Dhttps://wkrtcs.bdimg.com/rtcs/image?w=244&md5sum=db445dc3cd2d12f3e6b2a8fa561fd96d&sign=aa808b2c19&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=22&ipr=%7B%22w%22%3A244%2C%22h%22%3A21%2C%22dataType%22%3A%22gif%22%2C%22c%22%3A%22word%2Fmedia%2Fimage6.png%22%2C%22t%22%3A%22img%22%7D
举一反三
- 1.简述绘制折线Bode图的步骤。 2.一节阶rc低通滤波电路传递函数为，绘制其Bode图拍照上传https://wkrtcs.bdimg.com/rtcs/image?w=88.133333333333&md5sum=fb27a300c88cde9953cb1ac7a7834ebc&sign=98549f8f70&rtcs_flag=1&rtcs_ver=3.2&l=webapp&bucketNum=53&ipr=%7B%22w%22%3A88.133333333333%2C%22h%22%3A37.266666666667%2C%22dataType%22%3A%22gif%22%2C%22c%22%3A%22word%2Fmedia%2Fimage10.png%22%2C%22t%22%3A%22img%22%7D
- 22 A: 1 B: 2 C: 3 D: 5
- 已知a＝（3，－2），b＝（－5，4），则a·b＝（） A: －23 B: 23 C: 22 D: －22
- 图示等直杆AC，杆长为4a，材料的抗拉刚度为EA，受力如图，则杆B截面的水平位移为： 。<img src="http://p.ananas.chaoxing.com/star3/origin/9d027834bb41632541d4482c401bf4a4.png" /> A: <img data="%7B%22formula%22%3A%22%5C%5Cfrac%7B4Fa%7D%7BEA%7D%22%2C%22id%22%3A183317%7D" src="https://mooc1-1.chaoxing.com/ananas/latex/p/183317" /> B: 0 C: <img data="%7B%22formula%22%3A%22%5C%5Cfrac%7BFa%7D%7BEA%7D%22%2C%22id%22%3A173376%7D" src="https://mooc1-1.chaoxing.com/ananas/latex/p/173376" /> D: <img data="%7B%22formula%22%3A%22%5C%5Cfrac%7B3Fa%7D%7BEA%7D%22%2C%22id%22%3A398230%7D" src="https://mooc1-1.chaoxing.com/ananas/latex/p/398230" />
- 成年人红细胞中的血红蛋白主要结构为（） A: 2ε2 B: 22 C: 22 D: 22 E: 2ε2