In order to solve the problem of signal jump after incremental downloading and master-slave switching of a DCS controller for a nuclear power unit, the hot standby redundancy, incremental downloading, master-slave switching mechanism and the internal logic configuration of DCS are studied in depth. It is found that the non-standard logic configuration under the incremental

This paper proposes a new IP (integral-proportional) controller as STATCOM controller, and this IP controller uses particle swarm optimization (PSO) to tune parameters. 　　According to ITAE performance index, thermostatic element this IP controller is compared with the traditional PI controller. The simulation results also verify that the new IP controller has better performance than the

The structure, principle and timing of SDRAM are introduced. On this basis, the design of SDRAM controller is realized based on FPGA, and the code structure of the design is given. The simulation of the design is completed on MODELSIM platform. The results show that the design is successful. SDRAM is a synchronous dynamic random

Twenty-eight series chips of TI company are commonly used in traditional servo controllers. They belong to ASIC chips. The manufacturer has provided some common and fixed peripheral modules for users. Users can not add, delete or modify their functions at will. However, with the emergence of more and more dedicated servo systems, these fixed peripheral

Modern society has gradually realized digitalization, and China’s aviation industry has been struggling on the road of digitalization. This paper mainly studies the design technology of digital electronic controller for small aeroengine, hoping to help improve the control system. With the continuous development of science and technology, aeroengine control system, as an important control system

When the speed of an aircraft engine exceeds the set value, it needs oil cutting control, which is of high importance on the aircraft. 　　This paper provides a design scheme to improve the reliability of the controller. Under the condition that the basic reliability changes little, the anti-interference ability of the product can be improved

Combining with the integrated teaching reform, this paper integrates the basic instruction programming of PLC longitudinal arrangement, step-by-step sequence control instruction, SFC programming and functional instruction programming in the typical tasks, and achieves good teaching effect in teaching practice. Integrative teaching embodies the characteristics of competency-based. It integrates teaching resources according to the training objectives

For fractional order PID controller, a parameter tuning method based on particle swarm optimization is presented. 　　Firstly, the initial three parameters Kp, Ki and Kd are roughly determined by the engineering tuning method (critical scale method); secondly, the optimal parameters of PID controller are obtained by using particle swarm optimization algorithm; finally, the response curve

Combining with the process characteristics of flue gas desulfurization system in thermal power plant, the specific scheme and communication mode of control system using AB_ControlLogix 5000 Series PLC are put forward. The controller of the control system adopts redundant configuration, and the network configuration adopts its typical ControlNet and EtherNet modes. The signal transmission between

On October 14, 2001, Ruckus announced the launch of the virtual controller Ruckus Unleashed AP. Unleashed AP is based on the new virtual controller Wi-Fi architecture, which can reduce the cost of ownership and provide up to 50% performance improvement for small enterprise environments. Unleashed AP can meet the requirements of small enterprises for wireless