Motor controller
US10288171B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2017 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Jul 10, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/326
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
When a butting control is performed at a low temperature at which an oil temperature of an automatic transmission is equal to or lower than a predetermined value, a driving condition changing process is performed. In the driving condition changing process, an execution period from a starting of the butting control to an ending of the butting control is divided into a plurality of sections on the basis of a rotation angle of a motor. By making a torque of the motor greater and a rotation speed higher in a starting-section than in an ending-section, the execution period of the butting control is made short. By making the torque of the motor smaller and the rotation speed lower in the ending-section than in the starting-section, an amount of deformation of a component is made smaller when a part of a component is butted against a limit position so that a reference position can be learned accurately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.