Method of using feedforward compensation based on pressure feedback for controlling swash plate angle in a hydrostatic power unit of a continuously variable transmission
US9550490B2 · kind B2 · utility
3Cited by
47References
8Claims
0Family size
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Key dates
| Filing date | Aug 27, 2012 |
| Grant date | Jan 24, 2017 |
| Priority date | — |
| Expiry date | Aug 27, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/6869
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A swash plate angle for a hydrostatic power unit of a continuously variable hydromechanical transmission is determined using a feedforward compensation term, to reduce reliance on closed loop control. The feedforward term is based on knowledge of the hydrostatic power unit determined as a function of knowledge of certain parameters, including, but not limited to, hydrostatic power unit pressure, swash plate angle, desired hydrostatic power unit ratio, and pump speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.