Aiming at the serious safety accidents happened in escalators in recent years, according to the functional safety standard IEC6150 of electrical/electronic/programmable electronic safety related systems, this paper studies the hardware redundancy technology and method of dual-computer redundancy system, puts forward a dual-CPU system scheme of high reliability escalator safety controller based on dual-computer hot backup,

Through the characteristics of programmable controllers and application courses and students, this paper leads to the introduction of teachers in the teaching of programmable controllers and application courses. Programmable Controller and Application Course is a compulsory course of Electrical Engineering Specialty in our university, which has the characteristics of strong practicality and wide application. The

The control performance of fractional order PDU controller and conventional PD controller in inverted pendulum system is compared and analyzed. Taking the linear inverted pendulum as the controlled object, the state space equation of the whole system is established by Newton-Euler method. A dual-loop PD control scheme is proposed. The two controlled variables of the

Software Defined Network, referred to as SND, is the latest network architecture design concept proposed in recent years. 　　Its basic attributes include the separation of forwarding and control planes, and the centralization of network control and open flexible programming interfaces. This paper introduces the SND technology in detail, then expounds the networking logic and network

Under the condition of guaranteeing the inverted pendulum rod not to fall, the position of the car can be controlled. 　　The cascade control design method is applied to deduce the corresponding model. The design method of generalized general model controller is applied to design the inner and outer rings. The model of the controlled object

Aiming at some problems existing in the roll-bag workshop, this paper upgrades the main control, programming, HMI and communication of the injection controller, and adds new and effective functions, so as to achieve the best dust removal effect, visual monitoring and operation pictures, and effectively guarantee the normal production of the workshop. Dust-laden air enters

Programmable controller technology has become the main professional course of electrical specialty in Vocational colleges. Combining with the actual situation of Vocational College students, this paper expounds how to improve the teaching quality of this subject through modern integrated teaching mode. Programmable Logic Controller (PLC) is an electronic system device with microprocessor as the core

The application of Microcontrollers in life is becoming more and more common, and it also makes life more convenient and better. Many intelligent hardware are applied to microcontrollers. 　　This paper takes STM32 as an example to analyze the classification, background, characteristics, structure and characteristics of development board, application scenarios and future prospects of STM32 microcontrollers.

PLC has a wide range of applications in automation equipment, in which motion control is widely used in manufacturing industry, but the general PLC has no interpolation instructions, which limits the use of oblique or arc where two axes need to move together. Using formula deduction, simple interpolation program is developed on PLC, which enlarges

Content abstract: By using programmable controller to design and transform heating and drying furnace, this system replaces the application of traditional thyristor intelligent module, phase shifting regulator and other components, and realizes the whole process of automatic, safe and accurate drying temperature control of electrical equipment by using program control, sampling, feedback and other links.