All uncertainties and disturbances are not required to be constants. They may be bounded by some known functions of states and external measurable variables.

这里并不要求不确定性和干扰具有常数界，只要其界为状态变量或可测外部变量的已知函数即可。

youdao

All uncertainties and disturbances are not required to be constants. They may be bounded by some known functions of states and external measurable variables.

这里并不要求不确定性和干扰具有常数界，只要其界为状态变量或可测外部变量的已知函数即可。

youdao