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US 12,473,016 B2Granted
Rear wheel steering system
AssigneesHyundai Motor Company, Kia Corporation
InventorsSang Woo Hwang, Jai Hak Kim, Hyeong Seop Park
Life of this patent
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Abstract
A rear wheel steering motor generates rotational force. A movement converter has a converting portion coupled to the wheel steering motor and configured to convert the rotational force transmitted from the rear wheel steering motor into a linear movement. An MR fluid is applied on the converting portion. An inverter controls driving of the rear wheel steering motor. A magnet switch works in concert with the inverter to change a magnetic field to selectively provide the magnetic field to the MR fluid of the movement converter.
Claims7
A wheel steering apparatus comprising:
- a wheel steering motor configured for generating rotational force;
- a movement converter having a converting portion coupled to the wheel steering motor and configured to convert the rotational force transmitted from the wheel steering motor into a linear movement, with a magnetorheological (MR) fluid being applied on the converting portion;
- an inverter connected to the wheel steering motor and configured to control driving of the wheel steering motor;
- and
- a magnet switch connected to the inverter and configured to work in concert with the inverter to change a magnetic field to selectively provide the magnetic field to the MR fluid of the movement converter,
- wherein the magnet switch includes:
- an electromagnet connected to the inverter and magnetizing to generate the magnetic field in a response to a current received from the inverter;
- and
- a permanent magnet connected to first and second end portions of a core of the electromagnet through conductive connectors.
6 more elements
Dependencies are inferred from the claim text.