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as a fairly popular motor within the mechanics industry, the servo motor serves a variety of purposes. used in everything from cars and airplanes to robots, puppets, and more, they are convenient in that they can be relatively small, great for use in model size applications. on the other hand, they can also be used in more heavy-duty situations, such as for powerful sailboats. the following article is an attempt to discuss what the servo motor actually is and how exactly it works.
the basic servomotor is made up of five parts. these parts are some type of position sensing device, a dc motor, a control circuit, a gear reduction unit, and an output shaft bearing.
the first part is commonly a potentiometer or some type of position-sensing device. this device allows for the monitoring of the current angle of the motor itself. the signals produced then allow the dc motor to turn so that its shaft is in the appropriate position. the next two parts, a control circuit and a gear reduction unit can then combine to work together with the sensing device and the dc motor so that the servo motor receives control signals, allowing for the desired output into the fifth part: the servo shaft.
the other thing we need to know about the this type of motor relates to its wire connections. the servo motor has three wire connections, each connecting to a different source and ultimately combining to allow the motor to work properly. the first wire connects to a power source, the second wire connects to the ground, and the third wire connects to the control.
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