Since I do not understand the subject matter very well, I may have missed a few things which need to be corrected, or made some mistakes, but it is likely the the below corrections are good - they at least indicate places where I tried to change something which seemed unnatural or incorrect,
by the way, there is a "notebook" feature on this site which is better for corrections, it allows people to add corrections and use rich text (like bold, underline, italic, and colors) which can help make the changes more clear. I added ****everywhere I made a change.
This paper, inspired by works [23-24], aims at designing two direct adaptive fuzzy sliding mode controllers, with and without universal*** adjustment mechanisms*** for a class of MIMO nonlinear systems with unknown dynamics***, including control gain matrix boundaries***. Firstly, fuzzy systems are employed to approximate *** equivalent control. (這句我不懂???) Secondly, chatter*** can be alleviated using a*** the fuzzy switching technique. The parameters this或the*** fuzzy system can be*** adjusted online based on the Lyapunov ***stability theory. Lastly***, the proposed controllers are applied to a*** trajectory tracking control of robotic manipulators （這句我也不懂）. Simulated*** results demonstrate the proposed control schemes are effective for nonlinear systems***, and the system's*** output can track the desired input asymptotically. Taking**** into account the available results, the main contributions of this paper are: