Speed ratio controller and control method of continuously variable transmission
US6142908A · kind A · utility
6Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Jul 1, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/6648
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gyration angle .phi. of a power roller (3) of a toroidal continuously variable transmission (10) is made to vary via a step motor (4) and control valve (5). A controller (61) calculates a feedback control amount v of a step motor (4) so that a real speed ratio i of the transmission (10) coincides with a target speed ratio i*. The controller (61) calculates a command value u by correcting a control value v based on a non-linear relation between the gyration angle .phi. and the real speed ratio i, and controls the actuator (4) based on the command value u.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.