Industrial robot operation, servo motor application
The servo motor is an engine that controls the operation of the mechanical components in the servo system, and is an auxiliary motor indirect transmission. The servo motor can control the speed and position accuracy very accurately, and can convert the voltage signal into torque and speed to drive the control object.
The servo motor is an engine that controls the operation of the mechanical components in the servo system, and is an auxiliary motor indirect transmission. The servo motor can control the speed and position accuracy very accurately, and can convert the voltage signal into torque and speed to drive the control object.
The servo motor rotor speed is controlled by the input signal and can react quickly. It is used as an actuator in the automatic control system, and has the characteristics of small electromechanical time constant, high linearity, and starting voltage, which can receive the received electrical signal. Converted to an angular displacement or angular velocity output on the motor shaft. Divided into two major categories of DC and AC servo motor, its main feature is that when the signal voltage is zero, there is no rotation phenomenon, and the rotation speed decreases uniformly with the increase of torque.
Nowadays, the growth of the robot industry is in full swing, and everywhere, a large number of machine tool manufacturers, servo manufacturers and other qualified enterprises have turned to the robot market. Why are machine tool manufacturers and servo manufacturers so active in transforming R&D robots? Industrial robots have four major components, namely the 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:
Rapidity
Starting torque inertia ratio
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, short axial length
Can withstand harsh operating conditions, can perform very frequent forward and reverse and acceleration and deceleration, and can withstand overload in a short time.
