Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means
Reexamination Certificate
2007-02-28
2009-11-24
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Positional servo systems
With particular 'error-detecting' means
C318S460000, C318S638000
Reexamination Certificate
active
07622881
ABSTRACT:
A method and apparatus for estimating inertia wherein a load has a limited range of load travel, the method comprising the steps of identifying an intermediate position along the range of load travel that is separated from a first end of the range of load travel, with the load separated from a first end of the range of load travel, increasing a velocity of the electric motor from a first velocity, identifying when the load has reached the intermediate position, identifying the motor velocity at the intermediate position as a second velocity, detecting a first rate of velocity change from the first velocity to the second velocity and deriving an inertia value as a function of the first rate of velocity change.
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De Lange Robert J.
Golownia John J.
Rehm Thomas J.
Kuszewski Alexander R.
Luo David S
Quarles & Brady LLP
Ro Bentsu
Rockwell Automation Technologies Inc.
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