What is the difference between servo motor and general motors?
Servo motors belong to precision motors, and the smaller power, have their own Angle feedback signal, each round will produce more than 10000 Angle signal, extremely accurate, generally used in precision machining, special equipment, use to have a high precision requirement, general motors just a equipment of electrical energy into kinetic energy, there is no other auxiliary functions
The servo motor is called ac servo motor, ac synchronous motor. Common motors are commonly used to communicate asynchronous motors. The main difference is: 1, the distinction between closed-loop feedback and open-loop state principles; , this is also the biggest difference between ac synchronous motor through the backend sensor and encoder feedback speed, position, or torque reference value to form a complete set of drive, and real-time adjustment by the driver drive current value specified by the user to control motor rotation, dc stepper motor and asynchronous usually directly by the frequency converter or direct drive motor rotation, voltage regulator device will not external interference factors such as torque is too big, the heavy load to achieve the dynamic adjustment, so the former is more efficient than the latter, advanced, energy saving, accurate.
The difference between synchronous and asynchronous structures; Ac synchronous motor structure is the stator coil + magnetic rotor, it requires synchronization signals through feedback encoder know rotor magnetic field transformation, achieve the purpose of precise control, which is the stator three phase asynchronous motor structure + rotor core coil stellate or triangular structure, driving voltage alone set of rotating frequency values to achieve control, advanced vector inverter because just simple adjust the display value, no sync signal requirements, so it is not true sense of the closed loop feedback. So the former is more complicated than the latter, and cannot be easily disassembled. The distinction between special and generic; The former type, and due to the encoder manufacturer restrictions, usually form a complete set of drives not only by the inertia medium, power, also according to the communication protocol did plane is special, that is a only corresponds to a servo motor drives, not different series power corresponding connection, and form a complete set of ac asynchronous motor can usually be on different power converter, as long as the current shall not exceed the maximum speed. So, servo also brought challenges to the maintenance industry, usually ac synchronous motor maintenance technology content high, the maintenance cost is big, not only need to set up multiple different kinds and power servo test platform, and accumulated lots of experience.
Thus, ac synchronous motor belongs to precision adjustment, the encoder is not easy to hit, dust, vibration, in use process, if maintain undeserved can cause all kinds of fault, not general motor maintenance personnel can deal with it.
