Servo technology
The term servo is derived from the Latin "servus", which means something like slave, servant or helper. This expression was correct in the times when servo drives were only used as auxiliary drives for subordinate tasks, e.g. B. as actuators in machine tools . This limited use was due to the poor efficiency of the so-called linear amplifiers with power transistors and the limited lamellar voltage of the commutators on DC machines of approx. 200 V. The drives were controlled analogously, which severely restricted the scope of functions and every function expansion meant a great deal of effort .
Applications of servo technology
The rapid development in the field of semiconductor technology and modern microcontrollers was decisive for the success of today's servo technology . Highly integrated and powerful computer systems and the associated memory modules now enable the use of digital controls. This enabled the range of functions for the drive systems to be increased significantly. Because of this development, modern servo systems are used more and more frequently as main drives and less and less for subordinate auxiliary tasks.
The increasing automation in all areas of machine and plant construction requires ever shorter cycle times and greater flexibility when changing products. It is becoming increasingly difficult to meet these requirements with conventional asynchronous technology or with hydraulic or pneumatic components. This development has led to a major change in drive technology .
The servo technology sector in particular has developed into a strong growth branch with a high rate of innovation in recent years. The following servo drives are used today:
- Synchronous servomotors ,
- Asynchronous servomotors ,
- Synchronous linear motors .
They are mainly used in the following industries :
- Packaging technology ,
- Robotics ,
- Machine tools ,
- Handling systems,
- Sheet metal processing,
- Paper processing,
- Conveyor technology .
Web links
- Servo technology Link to the microsite of SEW-EURODRIVE