Software Defined Networking (SDN) constructs a network framework, which separates control plane and data plane, and provides a new solution for developing new network protocols and applications and future network technologies. In the framework of SDN network, the controller is in the central position, which has an important impact on the performance of SDN network.

In this paper, the problem of electromagnetic interference in windshield heating controller of a certain type of aircraft is analyzed, and a simple and effective solution to electromagnetic interference is proposed. Aircraft uses a large number of electronic and electrical equipment. Electromagnetic compatibility directly affects the function and performance of the aircraft and its systems.

In this paper, aiming at the problems of screw inserting machine based on Siemens S7-200 programmable controller, such as bumping suction head and inserting product, which often occur in the production process, under the condition of protecting the existing investment, the most economical and feasible solution to the existing problems can be provided for reference.

The access of distributed power supply (DG) has changed the single power supply structure of distribution network, making the original relay protection device no longer applicable. According to the directional comparison longitudinal protection scheme, the protection slave controller is designed with LPC1768 as the main chip. Software system is designed according to protection logic. With

Aiming at the control problem of the automatic guided vehicle, the kinematics model of the two-wheel differential automatic guided vehicle is established firstly. According to the kinematics model, a fuzzy controller suitable for the model is designed by using the theory of fuzzy control. The digital simulation results show that the designed fuzzy controller has

This paper introduces the automatic control equipment in the control system of grain dryer by using the upper computer and programmable logic controller (PLC). The technological process of the dryer and the software and hardware of the control system are analyzed in detail. Grain dryer is a kind of artificial grain drying equipment. It uses

At present, PLC control system is widely used in industrial production automation control. 　　Compared with traditional relay control system, it has many advantages, but it will not completely replace the traditional relay control system. They complement each other and sometimes need to be used together to complete the control task. Relay is widely used in

An integrated front-end data acquisition controller based on DSP for measuring environmental parameters such as temperature, pressure and vibration at high temperature, high pressure and high speed is introduced. The hardware and software design schemes are given. The hardware design mainly focuses on two aspects: high-speed data acquisition and large-capacity data storage. The collector has

This paper combines adaptive backstepping method with L2 gain interference suppression and Terminal sliding mode control. Firstly, the whole process of reasoning and design of the controller is given. Secondly, the four-machine system in two regions is simulated and its simulation results are analyzed. The results show that the Terminal sliding mode excitation controller has

A multi-mode display and control system of infrared remote control color lamp based on field programmable logic device (FPGA) is designed. It has the advantages of low cost, reliable performance and good expansibility. The circuit structure of the system is introduced in detail, and a construction method of infrared remote control system is proposed, which