未知误差 meaning in Chinese

unknown error

So the disturbance observer and adaptive control based on neural network are devoted to solve this problem . the principle of disturbance observer is to take all unknown disturbances like modeling error as systematic disturbance to approach , then use the output to compensate the systematic inversion error
干扰观测器的原理就是采用非线性干扰观测器将外部干扰、非线性系统内部的求逆误差和建模误差等一系列未知误差统一看成系统的干扰进行逼近,在通过系统输出对逆误差进行补偿。