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So can you use just a regular motor for the 50 dollar robot?
just to clarify, a servo is a motor, a circuit board (decodes the PWM code into motor actions) and a gearbox.
Hi,Quote from: dellagd on March 11, 2010, 09:11:59 PMjust to clarify, a servo is a motor, a circuit board (decodes the PWM code into motor actions) and a gearbox.And the very important positional feedback device (usually just a potentiometer), that tells the internal controller when the servo has reached the commanded position or how far from it it is.For the (cybernetic) function of the servo, the motor, feedback device and circuit is crucial, while the gearbox can be considered an added convenience which isn't really part of defining what a servo is.
We were talking about modified servo where the feedback mechanism is removed...
ServomechanismA servomechanism, or servo is an automatic device that uses error-sensing feedback to correct the performance of a mechanism. The term correctly applies only to systems where the feedback or error-correction signals help control mechanical position or other parameters. For example, an automotive power window control is not a servomechanism, as there is no automatic feedback that controls position—the operator does this by observation. By contrast the car's cruise control uses closed loop feedback, which classifies it as a servomechanism.
An electromechanical device that uses feedback to provide precise starts and stops for such functions as the motors on a tape drive or the moving of an access arm on a disk.
servomechanism definition an automatic control system in which the output is constantly or intermittently compared with the input through feedback so that the error or difference between the two quantities can be used to bring about the desired amount of control