Method for detecting electric-mechanical-brake pad drag and/or calculating actuator efficiency

Electric-mechanical-brake (EMB) pad drag is determined from measurements (which can include estimations) of EMB voltage, EMB actuator temperature, and either EMB current or EMB motor speed during an open-loop apply of the EMB pad and during an open-loop release of the EMB pad. An open-loop EMB actua...

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Bibliographic Details
Main Authors SIMPSON MELINDA D, LITTLEJOHN DERON C, ZUMBERGE JON T
Format Patent
LanguageEnglish
Published 29.09.2005
Edition7
Subjects
BLASTING
BRAKES
CALCULATING
CLUTCHES
COMPUTING
CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROLLING
COUNTING
COUPLINGS FOR TRANSMITTING ROTATION
ELECTRIC DIGITAL DATA PROCESSING
ENGINEERING ELEMENTS AND UNITS
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
REGULATING
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:Electric-mechanical-brake (EMB) pad drag is determined from measurements (which can include estimations) of EMB voltage, EMB actuator temperature, and either EMB current or EMB motor speed during an open-loop apply of the EMB pad and during an open-loop release of the EMB pad. An open-loop EMB actuator efficiency is calculated when certain conditions of the same measurements apply, whereupon the EMB actuator efficiency is calculated using at least the apply or release EMB current and a corresponding apply or release preselected (such as a nominal) EMB current or is calculated using at least the apply or release EMB motor speed and a corresponding apply or release preselected (such as a nominal) EMB motor speed.
Bibliography:Application Number: US20040013867