开环系统可观性和可控性矩阵满秩,配置极点时尝试多组极点,总是出现: g' ]: F, R) d4 u( m7 D/ Z* A$ Q
错误使用 place (第 171 行) 4 K+ w! M; q% k- J( K- O+ w: i& O6 {The "place" command could not place the poles at the specified locations. Probable causes include:# U5 F' X; `$ @) v
* (A,B) is nearly uncontrollable 3 ]7 \' X, |4 p( S& O% T) R* The specified locations are too close to each other.# ?; @: W+ n) R* f' `& p0 O
这是为什么啊? 0 D! Q) j1 C x5 x$ r0 T0 @6 B