Robot system and method for predicting life of regenerative resistor
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsYoshiki Santo, Yasunori Oyama, Jun Kanzaki
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Abstract
A robot system includes a motor provided at a joint, a regenerative resistor that consumes a back electromotive force generated by rotation of the motor as heat, and a controller configured or programmed to predict a life of the regenerative resistor based on a period of time during which the regenerative resistor is consuming heat.
Claims8
A robot system comprising:
- a robot including a joint;
- a motor provided at the joint;
- a regenerative resistor that consumes a back electromotive force generated by rotation of the motor as heat;
- a memory storing a database in which life values representing a remaining life of the regenerative resistor are associated with respective proportion values representing a proportion of time during which the regenerative resistor has consumed heat, the values having been stored in advance;
- and
- a controller configured or programmed to:
- acquire a period of time during which the regenerative resistor is consuming heat within one operational cycle of the robot;
- based on the acquired period of time, determine a proportion of the time of the one operational cycle that the regenerative resistor is consuming heat;
- compare the determined proportion to the proportion values in the database to determine the remaining life of the regenerative resistor;
- and
- output the determined remaining life of the regenerative resistor.
A method for predicting a life of a regenerative resistor of a robot system including a robot including a joint, a motor provided at the joint, the regenerative resistor that consumes a back electromotive force generated by rotation of the motor as heat, and a memory storing a database in which life values representing a remaining life of the regenerative resistor are associated with respective proportion values representing a proportion of time during which the regenerative resistor has consumed heat, the values having been stored in advance the method comprising:
- acquiring a period of time during which the regenerative resistor is consuming heat within one operational cycle of the robot;
- and
- based on the acquired period of time, determining a proportion of the time of the one operational cycle that the regenerative resistor is consuming heat;
- comparing the determined proportion to the proportion values in the database to determine the remaining life of the regenerative resistor;
- and
- outputting the determined remaining life of the regenerative resistor.
Dependencies are inferred from the claim text.