Control strategy of lower-limb exoskeleton

With the growth of market demand, the global medical exoskeleton market is rapidly expanding. The continuous improvement of medical exoskeleton technology promotes the development of the market scale. In some countries, medical exoskeleton coverage has increased. The lower-limb medical exoskeleton industry occupies the largest share in the global medical exoskeleton market because it helps humans solve the most basic walking, squatting, and going up and downstairs. However, the strategy of exoskeleton control systems has always been a complex issue. This article focuses on the control system of the lower-limb exoskeleton. By investigating description product and control system details, the lower-limb exoskeleton is divided into multiple joints and single joints to discuss their control system from principle, service subjects, advantages, and disadvantages. This paper also summarizes some possible solutions to the shortcomings of the lower-limb exoskeleton in the future to estimate the future trends of technological development.