Control system for walking assist device
First Claim
1. A control system comprising:
- walking oscillator measuring means for measuring a walking oscillator of a walker whose walk is assisted by a walking assist device;
first oscillator generating means for generating a first oscillator that tugs and is tugged by a walking oscillator measured by the walking oscillator measuring means such that an intrinsic angular velocity is reflected;
determining means for determining a new intrinsic angular velocity on the basis of a difference between a first phase difference between the first oscillator and the walking oscillator and a desired phase difference;
second oscillator generating means for generating a second oscillator that tugs and is tugged by a walking oscillator measured by the walking oscillator measuring means such that the intrinsic angular velocity determined by the determining means is reflected, and has a second phase difference, which is closer to the desired phase difference than the first phase difference is, with respect to the walking oscillator; and
walking assist oscillator generating means for generating a walking assist oscillator of the walking assist device on the basis of the second oscillator and the walking oscillator measured by the walking oscillator measuring means.
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Abstract
A system capable of controlling an autonomous walking assist rhythm, while following changes in a walking rhythm of a walker at the same time. A control system 100 in accordance with the present invention generates a first oscillator x that tugs and is tugged by a walking oscillator (hip joint angular velocity) φH′ such that an intrinsic angular velocity is reflected. Then, a new intrinsic angular velocity ωm is determined on the basis of the difference between a first phase difference θHM between the first oscillator x and the walking oscillator φH′ and a desired phase difference θd. Furthermore, a second oscillator y is generated that tugs and is tugged by the walking oscillator φH′ such that the intrinsic angular velocity ωm is reflected, and has a second phase difference θhm, which is closer to the desired phase difference θd than the first phase difference θHM is, with respect to the walking oscillator φH′. Then, based on the second oscillator y and the walking oscillator (hip joint angle) φH, a walking assist oscillator (torque imparted to the walker by a walking assist unit 200) T is generated.
48 Citations
29 Claims
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1. A control system comprising:
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walking oscillator measuring means for measuring a walking oscillator of a walker whose walk is assisted by a walking assist device;
first oscillator generating means for generating a first oscillator that tugs and is tugged by a walking oscillator measured by the walking oscillator measuring means such that an intrinsic angular velocity is reflected;
determining means for determining a new intrinsic angular velocity on the basis of a difference between a first phase difference between the first oscillator and the walking oscillator and a desired phase difference;
second oscillator generating means for generating a second oscillator that tugs and is tugged by a walking oscillator measured by the walking oscillator measuring means such that the intrinsic angular velocity determined by the determining means is reflected, and has a second phase difference, which is closer to the desired phase difference than the first phase difference is, with respect to the walking oscillator; and
walking assist oscillator generating means for generating a walking assist oscillator of the walking assist device on the basis of the second oscillator and the walking oscillator measured by the walking oscillator measuring means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification