US 8,478,550 B2Granted

Generator set calibration controller

AssigneeCaterpillar Inc.

InventorsKeith Ronald Folken, Michael Allen Dvorsky, Matthew Joseph Meinhart

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Abstract

A calibration system for a generator set controller is disclosed. The calibration system may have a source of electric power, a controller in communication with the source and configured to monitor a parameter of the electric power and produce at least one output corresponding to the monitored parameter, and a power meter configured to measure the parameter of the electric power. The calibration system may also have a processor in communication with the source of electric power, the controller, and the power meter. The processor may be configured to direct electric power having a first test voltage from the source to the controller, and directly relate a value of the at least one output corresponding to the first test voltage and a value of the measured parameter to an offset error.

Claims8

Dependent claims

A method of calibrating a genset controller, comprising:

generating electric power;
monitoring the electric power at a first location;
measuring the electric power at a second location;
making a first comparison of a value of the electric power monitored at the first location with a value of the electric power measured at a second location when the electric power has desired values;
determining a monitoring offset error based on the first comparison;
calculating a first calibration factor that accounts for the monitoring offset error;
affecting future monitoring based on the first calibration factor;
generating electric power having a known low voltage level and a known high voltage level;
making a second comparison of a value of the electric power monitored at the first location with a value of the electric power measured at a second location when the electric power has the low and high voltage levels;
and
determining a monitoring scale error based on the second comparison;
wherein making a first comparison and determining a monitoring offset error are done by one or more processors.

9 more elements

Dependencies are inferred from the claim text.