Robotics is the branch of mechanical engineering, electrical engineering, and computer science that deals with the design, construction, operation, and application of robots, as well as computer systems for their control, sensory feedback, and information processing. These technologies deal with automated machines that can take the place of humans in dangerous environments or manufacturing processes, or resemble humans in appearance, behavior, and/or cognition.
Many of today's robots are inspired by nature contributing to the field of bio-inspired robotics. To view robotics as an application of the principles of motions together with motors to provide motion and sensors to provide location and velocity may miss the inherent complexity of the discipline. A real robot does face the potential for errors due to a number of reasons, including incorrect parameter (for example mass, direction, distance) values, frictional forces and terrain estimations, play at the link joints, calibration errors in sensors, errors in the values read from the sensors.
The resulting errors in robot actions need corrections; preferably, without any explicit human help. These corrections cannot be recomputed by using the laws of physics and must be generated, as they are detected, by the robot as it executes the operation to enhance their ability to avoid immobilization, accommodate degraded performance, and even self-recover. The needed correction differs from one repetition of an operation to the next due to the unpredictability of many of the influences.
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