In the past few years, we have covered plenty of self balancing robot here. Researchers are always working on perfecting algorithms for them. This upper body vertical control framework enables robot to keep moving in the right direction when given a nudge. It also enables them to walk on slopes.
Must see robots & drones:
二足歩行ロボットのバランス制御と応用例（Balance control of a biped robot and application examples）
The above video from DrGuero2001 shows how a bipedal robot can be enhanced to walk naturally with this approach.
*Our articles may contain aff links. As an Amazon Associate we earn from qualifying purchases. Please read our disclaimer on how we fund this site.