Application of servo motor in industrial robot

The growth of the robot industry is in full swing, and everywhere, a large number of machine tool manufacturers, servo manufacturers and other qualified companies have turned to the robot market. Why machine tool manufacturers and servo manufacturers are so active in transforming and developing robots? Industrial robots have four major components, namely, body, servo, reducer and controller.

The stepper motor is used to drive the joints of the robot. It is required to have a maximum power-to-mass ratio and torque inertia ratio, a high starting torque, a low inertia, and a wide and smooth speed range.

The growth of the robot industry requires breakthroughs in the fields of servo and integrated control. At present, China is still in a stage of breakthrough in servo and other fields, which has adversely affected the local robot industry.

The general structure of an industrial robotic electric servo system is three closed loop control, namely current loop, speed loop and position loop. In general, for the AC servo drive, various functions such as position control, speed control, and torque control can be realized by manually setting the internal function parameters.

The continuous advancement of the industrial automation process, the demand for automation software and hardware equipment is high, and the domestic industrial robot market has been growing steadily. It is expected that China will become the world's largest demand market in 2015.

At the same time, it directly drives the market demand of the servo system. The Mercedes stepping servo motor system supplied by Merak is perfectly integrated into the servo control technology in the integrated motor, featuring high precision, good stability and high speed.

At present, AC servo motors with high starting torque, high torque and low inertia are widely used in industrial robots. Other motors, such as AC servo motors and stepper motors, are also applied to industrial robots depending on the application requirements.

In particular, robot-end actuators (hands) should use motors with as small a volume and quality as possible. Especially when fast response is required, the servo motor must have high reliability and a large short-time overload capability. Specific use requirements:

Rapid.

The starting torque inertia ratio is large.

The continuity and linearity of the control characteristics, as the control signal changes, the rotational speed of the motor can continuously change, and sometimes the rotational speed is proportional to or proportional to the control signal.

Wide speed range.

Small size, small mass and short axial dimension.

Can withstand harsh operating conditions, can perform very frequent forward and reverse and acceleration and deceleration, and can withstand overload in a short time.

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