Walking and sit-to-stand support system, the smart mobile walker, is being developed to help elderly and disabled to live an independent daily life. It comprises almost omnidirectional driving mechanism, sit-to-stand support mechanism, and motion compliance module to control the system. The development and evaluation of basic motion compliance algorithm shows that the algorithm for extraction of user intention from the interaction of the operator and the system determines performance of the system. The required parameters and performance index for improving sit-to-stand function are evaluated by the analysis of force reflection between the operator and the system. Finally, future research topics to improve the performance are addressed.
This paper introduces a robotic walking and sit-to-stand support system, Smart Mobile Walker(SMW), and presents kinematic analysis of the system. For supporting person's sit-to-stand movement, the motion of SMW is modeled by the analysis of kinematics. The results of analysis are used for simulations and its feasibility is investigated by simulations. The feasibility shows our analysis of kinematics can be applied as a base of making optimal motion trajectory for helping sit-to-stand.
Recording characteristics of guided-layer media consisting of planar recording layer and land/groove patterned guided-layer were investigated. Guided-media can be operated with a focusing servo and a tracking servo on the planar recording layer and the guided-layer, respectively. Recording properties using not only two blue lasers but also one blue and one red laser were measured. The jitter of about 8% was obtained from the planar recording layer on the guided-layer using two blue lasers system. Even though the jitter was not obtained, a similar performance to the previous result was observed with the blue laser and the red laser system. Though these experimental results, the possibility of high recording density with increasing data transfer rate could be confirmed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.