What is the difference between a servo motor and a direct drive motor?
These two are not a concept Servo motor means that this motor is driven by high frequency pulse driven by servo actuator, which can achieve fixed Angle, fixed speed and fixed torque output. He's talking about the type of motor. A direct drive motor is a direct and rigid connection between the motor and load, without any transmission or coupling in the middle. He's talking about how the motor is used. The servo motor can be connected directly to the load or through the transmission device load. The dc motor can be a servo motor or other motor.
Obvious distinction The direct drive motor is powered by the power supply, which is not controllable. The servo motor is driven by the actuator, which is controlled at speed, torque and position.
Servo motor is only converts electrical energy into mechanical energy, but it's lower also needs to connect all kinds of transmission device (such as belts, screw, wheel, etc.) to achieve your requirement; And straight don't need other gear drive motor, a direct connection device, such as the drum of the washing machine motor connected directly, and reduced the mechanical transmission part of the connecting parts