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

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