Development trends of servo applications

The application of digital AC servo system is more and more widely, and the user’s requirement for servo drive technology is more and more high. In general, the development trend of servo system can be summarized as the following aspects:

01 integrated

At present, the output devices of the servo control system are more and more adopting the new power semiconductor devices with high switching frequency, which integrates the functions of input isolation, energy consumption braking, over-temperature, over-voltage, over-current protection and fault diagnosis into a small module.

 With the same control unit, as long as the system parameters are set by software, its performance can be changed. It can not only use the sensors configured by the motor itself to form a semi-closed-loop regulation system, but also can be connected with external sensors such as position, speed, torque sensors, etc., to form a high-precision full closed-loop regulation system.

 This high degree of integration significantly reduces the size of the overall control system.

 02 intelligent

 At present, the servo internal control core mostly adopts the new high speed microprocessor and special digital signal processor (DSP), so as to realize the completely digital servo system. The digitization of servo system is the prerequisite of its intellectualization。

The intelligent performance of servo system is shown in the following aspects

All operating parameters of the system can be set by the software through man-machine dialogue. Secondly, they all have the function of fault self-diagnosis and analysis.

 Secondly, they all have the function of fault self-diagnosis and analysis. And the function of parameter self-tuning.

As is known to all, parameter tuning of closed-loop regulating system is an important link to ensure the system performance index, and it also needs more time and energy.

 The servo unit with self-tuning function can set the parameters of the system automatically and realize the optimization automatically through several trial runs.

 03 networked

 The networked servo system is the inevitable trend of the development of comprehensive automation technology, and it is the product of the combination of control technology, computer technology and communication technology. Fieldbus is a kind of digital communication technology which is applied to the production site and implements the two-way, serial and multi-node digital communication technology between the field equipment and the field equipment and the control device.

 Fieldbus has been widely used in the information exchange transmission between servo systems, servo systems and other peripheral devices such as HMI, (with motion function) programmable controller PLC, etc.

 These communication protocols provide the possibility of multi-axis real-time synchronous control and are also integrated into some servo drives to achieve distributed, open, interconnected and high reliability of the servo system.

 04 facilitation

 Here “Jane” is not a simple but concise, is according to the user, the user USES the servo function to strengthen, designed and refined, and will give some of the function is not used to streamline, reducing the cost of servo system, for customers to create more profits, and by streamlining some components, reduce the waste of resources and environmentally friendly.

 “Easy” here means that the software programming and operation of the servo system is developed and designed from the user’s point of view, and strives to be simple and easy for users to debug.

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Post time: Apr-13-2021

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