Visual Feedback Balance Training System Combined with RFE in Stroke

The goal of this clinical trial is to learn if visual feedback balance training system combined with repetitive facilitative exercise (RFE) work to treat stroke in adults. The main questions it aims to answer are: Does visual feedback balance training system combined with RFE reduce the fall risk of participants? Can the combination of intelligent rehabilitation robot training system and RFE achieve better effects? Researchers will compare 3 groups (RFE, visual feedback balance training system under RFE, and conventional therapy) to see if visual feedback balance training system and RFE works to treat stroke. Participants will: Receive treatment for 4 weeks Receive scale and instrument testing before and after treatment