Development of a walking support machine with a lift device controlled by a servo brake

This paper presents a passive-type walking support machine equipped with a lift device which provides a patient with partial body weight support and prevents the patient from falling down. This walking support machine is intrinsically safe, because this machine consists of only passive components with no active actuators. The lift device has a constant force spring and a powder brake. The constant force spring is used in order to provide the patient with partial body weight support. The powder brake, which can control the torque, is used in order to prevent patient's falling. Furthermore, we propose a brake control method to prevent patient's falling. Finally, we discuss the effectiveness of the machine from experimental results.

[1]  Shizuko Hattori,et al.  System design and field-testing of the walk training system , 1996, Proceedings of IEEE/RSJ International Conference on Intelligent Robots and Systems. IROS '96.

[2]  Shizuko Hattori,et al.  Control Methods of Walk Training System. , 1996 .

[3]  Yoshio Inoue,et al.  A walking support/evaluation machine for patients with parkinsonism. , 2004, The journal of medical investigation : JMI.

[4]  Kazuhiro Kosuge,et al.  Passive-type intelligent walking support system "RT Walker" , 2004, 2004 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) (IEEE Cat. No.04CH37566).

[5]  Takehiro Iwami,et al.  Evaluation of the Gait of Elderly People Using an Assisting Cart. Gait on Flat Surface. , 2000 .

[6]  Kenji Ishida,et al.  W-1-4-4 Prevention of a patient's falling by using a sensor-controlled ambulation support machine : Analysis of leg muscle action based on the musculo-skeletal model , 2002 .

[7]  Yoshio Inoue,et al.  Real-time measurement of frozen gait in patient with parkinsonism using a sensor-controlled walker. , 2004, The journal of medical investigation : JMI.

[8]  Ju-Jang Lee,et al.  Develpment of Walking Assitance Robot System and Experiment with the Disabled , 2001 .

[9]  Kazuhiro Kosuge,et al.  Motion Control of Passive-type Walking Support System based on Environment Information , 2005, Proceedings of the 2005 IEEE International Conference on Robotics and Automation.

[10]  Masakatsu G. Fujie,et al.  Power-assisted walking support system for elderly , 1998, Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286).