Servo Motor High Performance
Servo Motor high performance
In order to improve efficiency, servo motors are generally used non-ferrous metals do worm gear, worm is used hard steel. As a result of sliding friction transmission, the operation will produce more heat, so that the servo motor parts and seals between the thermal expansion of the difference, so that the formation of gaps in the mating surface, lubricating oil due to the temperature rise and thinning, easy to cause leakage The Device, it is strictly prohibited with a hammer and other hitting, to prevent axial or radial force is too large damage to the bearing or gear. Be sure to tighten the device bolts and then tighten the tightening bolts. Before the device, the motor input shaft, positioning the boss and reducer connection parts of the anti-rust oil with gasoline or zinc sodium water wipe net. Its purpose is to ensure the tightness of the connection and the flexibility of operation and to prevent unwanted wear.
So far, high-performance electric servo system mostly use permanent magnet synchronous AC servo motor, control the drive to use fast, accurate positioning of all-digital position servo system. Since the 1980s, with the development of integrated circuits, power electronics technology and AC variable speed drive technology, permanent magnet AC servo drive technology has been outstanding development, the famous electrical manufacturers have introduced their own AC servo motor and servo drive series Products are not perfect and updated from time to time. AC servo system has become the contemporary high-performance servo system, the main direction of development, so that the original DC servo is facing out of the crisis.
With the rapid development of supporting technology such as modern power electronic technology, microelectronics technology and computer technology, the development of AC servo drive system with servo motor as the implementing agency has been greatly improved. However, servo control technology is one of the key technologies to determine the performance of AC servo system, the main part of foreign AC servo technology blockade.
Servo motor applications are too much, as long as there is a power source, and the accuracy of the requirements, generally may be related to the servo motor. As the DC servo motor mechanical structure is complex, maintenance workload, including brush, commutator, etc. has become the bottleneck of the development of DC servo drive technology. AC reactor. AC reactor is used to suppress the high-order harmonics generated by the inverter of the servo motor, to improve the power factor and to reduce the influence of the harmonics on the power grid. It also prevents the impact of the power grid on the inverter of the servo motor. When the servo motor inverter is used in a high-power environment where the harmonics of the electrical equipment are used, or when the feedback motor is selected for the servo motor inverter, the power factor compensation capacitor may be installed on the power supply line Larger inrush current occasions, should be equipped with AC reactor.
Line and motor side filter. In addition, to maintain the distance between the power line and the control line, the use of shielded cable, in accordance with the provisions of the requirements of grounding, reduce the servo motor inverter four M carrier Frequency is also an effective measure to eliminate electromagnetic interference.