Simulating a cable driven system by simulating the effect of cable portions on objects of the system
US11068626B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2018 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Oct 29, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F30/17
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A cable driving a large system such as cable driven machines, cable cars or tendons in a human or robot is typically modeled as a large number of small segments that are connected via joints. The two main difficulties with this approach are satisfying the inextensibility constraint and handling the typically large mass ratio between the small segments and the larger objects they connect. This disclosure introduces a more effective approach to solving these problems. The introduced approach simulates the effect of a cable instead of the cable itself using a new type of distance constraint called ‘cable joint’ that changes both its attachment points and its rest length dynamically. The introduced approach models a cable connecting a series of objects as a sequence of cable joints, reducing the complexity of the simulation from the order of the number of segments in the cable to the number of connected objects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.