Conceptual Design of Customized Lower Limb Exoskeleton Rehabilitation Robot Based on Axiomatic Design

Abstract

In order to standardize the design process of complex products and improve customer satisfaction and intelligence of specific design scheme, a design case of Lower Limb Exoskeleton Rehabilitation Robot (LLERR) is presented in this paper. Under the precondition that walk assistance and rehabilitation training functions are achieved, higher demands for LLERR from psychological and physiological needs of users are proposed. Based on the research status and market demands of rehabilitation robots, a conceptual design of LLERR with the character of customized gait and customized exoskeleton is presented. The mapping process from functional requirement (FR) domain to design parameter (DP) domain of customized design scheme is analyzed according to Axiomatic Design (AD) theory. Then, an overall design matrix of 11×11, a triangular matrix, is obtained, revealing that the customized design scheme of LLERR is a decoupled design with great reliability. Lastly, the design scheme is optimized through constrains analysis. The correctness and practicality of this design scheme are verified. The paper's work can provide guidance for the design of the same type products.