The circular inverted pendulum adopts an open architecture control solution with expandible experimental modules. With the circular motion base platform, it is easy to be configured to satisfying various needs for control teaching and research. Namely:
(i) Circular one-stage inverted pendulum
(ii) Circular two-stage serial inverted pendulum
(iii) Circular two-stage parallel inverted pendulum
(iv) Combined serial & parallel inverted pendulums of three- and four-stages