Braking force control apparatus
US6464308B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2001 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Jul 31, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/741
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A braking force control apparatus is provided that controls the motor displacement to obtain a braking force that corresponds to the pedal depressing force. The braking force control apparatus detects the initial contact point between the pads and the rotor, which changes due to wear and heat deformation. The braking force control apparatus also adjusts a motor displacement command to enable an accurate braking force control. The braking force control apparatus detects the initial contacting point by detecting the electrical current value of the motor. When the motor is driven at a constant speed to contact the pads against the rotor, the electrical current value is stable. Thus, the initial contacting point is detected by using the motor displacement at the time when the electrical current value increases and becomes equal to or greater than the initial threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.