Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means
Reexamination Certificate
2007-01-30
2007-01-30
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Positional servo systems
With particular 'error-detecting' means
C318S132000, C318S254100, C318S434000, C318S286000, C318S474000, C318S453000
Reexamination Certificate
active
10940345
ABSTRACT:
Latch control methods and systems are disclosed, including a latch that receives power from a motor associated with a latch. A sensor can be provided for monitoring the current consumption of the motor. A microcontroller can control the latch and/or the motor, based on the current consumption data received from the sensor concerning the current consumption of the motor. Monitoring of the current waveform of the motor therefore provides speed and direction feedback data for control of the latch. Additionally, a microprocessor can process instructions for controlling the interaction of the motor, the latch, the sensor and/or the microcontroller. Such a current monitoring control system is made possible by variation in current consumption of the motor during rotation as a result of commutation, which can be interrogated by measuring the voltage drop across the motor or a shunt resistor, or through the use of other current sensors, such as, for example, a Hall-effect type current sensor.
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Bechtold Kenneth V.
Crawford Alex
Eaton William F.
Gibson Hugh D.
Hayes Richard T.
Donovan Lincoln
Honeywell International , Inc.
Lopez Kermit D.
Ortiz Luis M.
Smith Tyrone
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