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Appendix A
A.1 Glossary
R
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Rectangular-Coordinate Robot
A robot whose manipulator arm moves in linear motions along a set of
Cartesian or rectangular axis in X, Y and Z directions. The shape of the
work envelope forms a rectangular figure. See
"Work Envelope"
.
Reliability
The probability or percentage of time that a device will function without
failure over a specified time period or amount of usage (R15.02). Also
called: the robot's uptime or the Mean Time Between Failure (MTBF).
Remanufacture
To upgrade or modify robots to the revised specifications of the
manufacturer. (R15.06)
Remote Mode
Remote Mode is a type of Play Mode where the automatic execution of
robot program is initiated from an external device (not the Programming
Pendant). During this mode, the use of the Programming Pendant is
disabled.
Repeatability
A measure of how close an arm can repeatedly obtain a taught position.
For instance: once a manipulator is manually placed in a particular
location and this location is resolved by the robot, the repeatability
specifies how accurately the manipulator can return to that exact location.
The degree of resolution within the robot control system determines the
repeatability. In general, an arm's repeatability can never be better than its
resolution. See
and
Resolution
The amount of robot joint motion required for the position sensing to
change by one count. Although the resolution of each joint feedback
sensor is normally constant, the resolution of the endpoint in world
coordinates is not constant for revolute arms, due to the non-linearity of
the arm's kinematics.
Revolute Joint
The joints of a robot, which are capable of rotary motion.
Risk Assessment
The process of evaluating the intended use of a machine or system for
foreseeable hazards and then determining the level of risk involved for the
tasks identified.
Risk Mitigation
A secondary step in the risk assessment process that involves reducing
the level of risk for the identified tasks, by applying risk reduction
measures in order to eliminate or mitigate the hazards.
Robot
A re-programmable, multi-functional manipulator designed to move
material, parts, tools or specified devices through variable programmed
motions for the performance of a variety of tasks. Common elements
which make up a robot are: YRC1000micro Controller, manipulator and
end-effector. See
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