Currently, mainstream servers use digital signal processors (dsps) as the control core, allowing for more complex control algorithms, digitization, networking and intellectualization. Power units generally use drive circuits designed with the smart power module (ipm) at their core, ipm internalizing into drive circuits, with fault-protected circuits such as overpower, overflow, overheating, underpressure, etc., and soft-start circuits in the main circuit to reduce the impact of the start-up process on the drive。
The power-driving unit first recombines the input of three-phase or municipal electricity through a three-way complete current circuit and receives the corresponding direct current. The three-phased, three-phase or market-based power is then driven by the three-phase chord pwm transformer frequency to the three-phase magnetic synchronized communication server. The whole process of the power-driven module can simply be described as the ac-dc-ac process. The main condensed circuit of the condensation unit (ac-dc) is the uncontrollable current circuit。
With the large-scale application of the server system, the use of the server drive, the debugging of the server drive are more important technical topics for the server drive today, and a growing number of technical servers have conducted in-depth research on the server driver。
Server drives are an important part of modern motion control and are widely used in automation equipment such as industrial robots and digital processing centres. In particular, the server drive for the control of the communication ensp has become a national and international research hotspot. Current communication server design uses current, velocity, position 3 closed loop control algorithms based on vector control. The soundness of the design of the velocity closed ring in the algorithm plays a key role in the performance of the entire server control system, particularly the speed control performance。
Service for system requirements
1. Broader range
High positioning accuracy
Three, have a strong and high speed stability
4. Rapid response, no ultrasound
In order to ensure productivity and quality of processing, in addition to the requirement of high positioning accuracy, a good rapid response feature is required, i. E., the requirement to follow the command signal quickly, as the digital control system requires a sufficiently high and less acceleration on start-up and brake, shorter transition time into the system and less contours transition error。
Five, low-speed, high-speed overload
Generally, the server drive has an overload capacity of more than 1. 5 times in minutes or half an hour and can be overloaded four to six times within a short time without damage。
6. High reliability
Requires the entry of a numerically controlled machine bed to have a high reliability and work stability of the drive system, with a high degree of environmental adaptability, such as temperature, humidity and vibration, and a high resistance to interference
