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0 [! {% c$ E/ s( y e3 q* U
错误使用 place (第 171 行)" y. L) Q9 N9 ~, _3 [
The "place" command could not place the poles at the specified locations. Probable causes include:3 a/ Q0 o' M+ `/ _
* (A,B) is nearly uncontrollable# u" w! x# ~; |1 N3 F; D
* The specified locations are too close to each other.. B- R \8 H# h1 \% f
这是为什么啊? * N/ [7 T3 b7 n