This invention relates to a flexible hip joint assistive
exoskeleton and its control method. The
exoskeleton includes a posterior drive unit, a right anterior drive unit, a left anterior drive unit, a left posterior Bowden line, a right posterior Bowden line, a left
knee joint flexible binding structure, a
right knee joint flexible binding structure, a flexible bionic
vest, a left anterior flexible band, and a right anterior flexible band. The left posterior Bowden line connects the posterior drive unit and the left
knee joint flexible binding structure, and the right posterior Bowden line connects the posterior drive unit and the
right knee joint flexible binding structure. The posterior drive unit controls the tightening and releasing of the two Bowden lines. The left anterior flexible band connects the left anterior drive unit and the left
knee joint flexible binding structure, and the right anterior flexible band connects the right anterior drive unit and the
right knee joint flexible binding structure. The two anterior drive units control the tightening and releasing of their respective flexible bands. Through the cooperation of the flexible bands and Bowden lines, the
exoskeleton assists in
hip joint flexion and extension. The method controls the exoskeleton through dual-layer sensing technology. The upper layer of sensing uses multi-sensor data to identify the timing of exoskeleton assistance, while the lower layer of control uses a dual-
modal switching control strategy to achieve coordinated control of the tightening and releasing of Bowden lines or flexible belts.