Multifunctional electric recirculating ball steering system for commercial vehicles and control method thereof
US11753066B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2021 |
| Grant date | Sep 12, 2023 |
| Priority date | — |
| Expiry date | Dec 15, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K16/02
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A multifunctional electric recirculating ball steering system for commercial vehicles and its control method are described. The system comprises three modules: an electric power module, a mechanical transmission module, and a control module. The system introduces a dual-rotor motor and a common power motor, working together to act on the input end of a recirculating ball steering gear. The dual-rotor motor offers high redundancy, increased output torque, and improved reliability for control-by-wire operations. A fork assembly enables synchronous and asynchronous rotation of the dual rotors, achieving both steer-by-wire and electric power steering functions. Leveraging the high reduction ratio capability of the recirculating ball steering gear maximizes power torque and simplifies the system architecture while ensuring reliability in both traditional control and control-by-wire functionalities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.