| 摘要 |
An electric brake system for an aircraft includes an electric brake actuator overdrive feature that preserves full braking performance even with a failed or intentionally-deactivated electric brake actuator. The electric brake actuator (EBA) overdrive feature monitors EBA parameters, detects a failed or deactivated EBA, deactivates the failed EBA if needed, and proportionally overdrives the remaining functional EBAs by an amount equivalent to the lost clamping force of the failed EBA. This technique effectively provides a clamping force for the wheel-brake that is fully or partially equivalent to the clamping force of a complement of functional EBAs on any wheel-brake of the electric brake system. Use of the overdrive technique provides airplane braking performance that is equivalent to a normal braking condition; therefore, the airplane can be dispatched with a failed or deactivated EBA without the standard operational-performance restriction. |
