[例2]稳定性必要条件 如图液位控制系统，如何选取区，T以确保系统的稳定性。 0 用水开关 School of Mechanical Engineering ME369-lecture 6.2 Shanghal Jiao Tong University Fall 2015 劳斯判据(Routh's Stability Criterion)-劳斯阵列 D(s)=aos"+as"+..+an-is+a,=0 aa3a4… 4143a5. 5-2 a0a21 b1=- aa b2=- 5 GC2C3… a a 5 add2d,… 52 e 无 School of Mechanical Engineering ME369-lecture 6.2 Shanghai Jiao Tong University Fall 2015 77 ME369-lecture 6.2 Fall 2015 School of Mechanical Engineering Shanghai Jiao Tong University 如图液位控制系统，如何选取K,Tm 以确保系统的稳定性。 [例2]稳定性必要条件 ME369-lecture 6.2 Fall 2015 School of Mechanical Engineering Shanghai Jiao Tong University 1 0 1 1 ( ) ... 0 n n D s a s a s a s a n n         1 1 3 0 2 1 a | a a a a | b   1 1 5 0 4 2 a | a a a a | b    1 2 3 4 2 1 0 n n n n n s s s s s s s s     024 1 3 5 a a a a a a 1 2 3 b b b 1 2 3 1 2 3 1 2 1 1 c c c d d d e e f g 劳斯判据（Routh’s Stability Criterion）--劳斯阵列