In view of current production technology of asphalt concrete mixing plant and technology, a distributed computer control system based on PLC and field bus is developed. The compensation iteration self-learning algorithm is adopted, the compensation amount of learning algorithm of the system is designed and the course program control algorithm is presented. Therefore the precision of the system’s measurement and control is improved and the transmission error is reduced.
The compositions, principles and features of infrared sensors, ultrasonic sensors, microwave sensors and combined sensors in intrusion detection system are discussed in this paper, then the applications and installation skills of several common intrusion detection system are introduced.
This paper proposes the conception of stepper motor controller’s design on the basis of the principle and algorithm of fuzzy BP network. It realizes the control function by identifying the consequent parameters. After taking some simulation experiments, the system control performance is good, the system operation is stable, and no runaway phenomenon has happened.
The frequency speed control system in flow control based on SENLAN SB60 frequency converter is made up of input set value and actual value which is the feedback voltage signal given by flow sensor, then adjusted by process PID automatic control, changes output frequency to regulate the speed of three-phase asynchronous motor to achieve the purpose of speed regulation, thus the tank's flow control can be obtained.
The measurement principle of furnace temperature field based on flame radiation image is analysed, nonlinear optimization mathematical model aiming at measurement objects is established, a temperature field measurement algorithm based on BP neural network is put forward. It can draw the furnace temperature field distribution by constructing the BP neural network, inputting image sample, outputting temperature sample and choosing appropriate sample training network. In the end, the measurement accuracy can be effectively improved and there is sure to be a good application prospect.
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