Robot Systems
Essentially, robots perform work that would otherwise have to be done by an operator.
However, they may create hazards themselves, and if they do, appropriate guards must be used.
Robots are used for replacing humans who were performing unsafe, hazardous, highly repetitive, and unpleasant tasks. They are best used in high-production processes requiring repeated routines where they prevent other hazards to employees. They are used to accomplish many different types of application functions such as material handling, assembly, arc welding, resistance welding, machine tool load/unload functions, painting/spraying, etc.
All industrial robots are either servo or non-servo controlled.
Servo Robots
Servo robots are controlled through the use of sensors which are employed to continually monitor the status of the robot's axes for positional and velocity feedback information. This feedback information is compared on an on-going basis to pre-taught information which has been programmed and stored in the robot's memory.
Non-servo Robots
Non-servo robots do not have the feedback capability of servo robots. Their axes are controlled through a system of mechanical stops and limit switches to control the robot's movement.
Knowledge Check Choose the best answer for the question.
4-4. Which type of robot system uses a pre-taught learning program to monitor its movement and velocity?
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