The excitation controller based on LPC11c14 completes the hardware and software design of frequency measurement, terminal voltage and synchronous shift trigger. The terminal voltage is obtained by AD sampling. The terminal voltage is compared with the given reference value as a control signal. The control voltage Uk is obtained by PID control processing, and the

In order to make the PLC controller conform to BACnet International Building Automation Control Standard, a PLC controller based on S TM32 control chip and MS/TP protocol is designed and developed. The controller can be programmed by ladder diagram and has complete control logic to meet the consistency requirement of BACnet. Experiments show that the

Aiming at the problems of large energy consumption and poor standby state control effect of automatic data debugging of electric automatic controller, an electric automatic energy-saving controller based on particle swarm optimization is proposed. 　　The SYU? 213 energy-saving controller is selected in the design. The automatic controller is optimized in hardware to ensure the effective

The demand for energy saving and noise reduction in the transmission system of electric bicycle is increasing day by day. Compared with the traditional brushless DC motor driven by 120 degree square wave with two or two conductors, the permanent magnet synchronous motor driven by vector control has the advantages of low noise and low

Three-terminal regulator is a common component of air-conditioning controller. Its main function is to convert and stabilize DC voltage. The crystal elements in the three-terminal voltage regulator are semiconductor materials. In the actual production process, electrostatic damage often occurs, which will affect the normal operation of the whole air conditioning controller. Therefore, it is particularly

With the comprehensive development of society and science and technology, programmable logic controller has been widely used in many fields. We will analyze it from the hardware circuit debugging of programmable logic controller, lower computer program debugging, upper computer program debugging and system on-line programmable logic controller debugging. This paper will discuss the debugging and

In the live broadcast of the first flight of the C919 airliner, the audience saw Captain Cai Jun flying steadily in the sky, only to see his arm move slightly, so that he could easily control the huge C919 airliner. Where’s the secret? The answer is the telex side bar controller. The telex side bar

Modican PLC controller is widely used in ETS system, and this type of PLC control system runs stably and has high reliability. However, with the development and upgrading of power process control system, the original Modican PLC control system has appeared many hidden dangers affecting the safe operation of equipment and system, such as hard

A temperature control system of intelligent household electric water heater is designed. STC89C52 MCU is used as the control core and C language is used to write the program. Using keyboard to set the temperature, the temperature can be accurate to 0.1 degrees Celsius, and using LED light display, can accurately provide users with the

Datang Sanmenxia Power Generation Co., Ltd. Phase II 600 MW units have increased significantly in recent years in the number of card and CPU failures, and the cost of CPU replacement is high, the risk of replacement process is high, increasing the workload of daily maintenance, seriously threatening the safe and economic operation of the