Using Barbalat's lemma: V ¨ = − 4 e ( − e + g ⋅ w ) {\displaystyle {\ddot {V}}=-4e(-e+g\cdot w)} .
Sử dụng bổ đề Barbalat: V ¨ = − 4 e ( − e + g ⋅ w ) {\displaystyle {\ddot {V}}=-4e(-e+g\cdot w)} .