Electricity: motive power systems – Positional servo systems – Adaptive or optimizing systems including 'bang-bang' servos
Reexamination Certificate
2008-11-18
2011-12-27
Masih, Karen (Department: 2837)
Electricity: motive power systems
Positional servo systems
Adaptive or optimizing systems including 'bang-bang' servos
C318S558000, C318S634000
Reexamination Certificate
active
08084982
ABSTRACT:
An HVAC actuator, such as a spring return actuator, may adjust the maximum output torque of the motor with the varying spring return force of the HVAC actuator as the HVAC actuator moves through its range of motion. In some cases, this may provide a more constant force at the output of the HVAC actuator and reduce the force that is applied through the motor, drive train and/or the HVAC component when an end stop is reached. Also, an HVAC actuator is disclosed that can be configured to discover and store the location of one or more end stop(s), and to slow the speed of the motor down before the end stop(s) is reached. This may reduce the force that is applied through the motor, drive train and/or the HVAC component when an end stop is reached.
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Carlson Nathan
Cermak David
Chromy Ivo
Grabinger Cory
Honeywell International , Inc.
Masih Karen
Seager Tufte & Wickhem LLC
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