An automatic control system of chemical instrument based on single chip microcomputer(SCM)technology is de-signed to address the issues of large control errors and inflexible execution in chemical instruments.The data acquisition module is controlled by the single chip microcomputer.The operating signal of the chemical instrument is collected through the sensor and converted into a digital signal.The operating data of the chemical instrument are compared with the target control data.The deviation of the two is taken as the input of the PID controller.The particle swarm optimization is used to determine the optimal control parameters of the PID controller.The PID controller outputs the automatic control results of the chemical in-strument based on the optimal control parameters.The system testing results show that the designed system can achieve auto-matic control of chemical instruments such as temperature instruments and pressure instruments,and the control error is less than 0.5％.
维普
万方数据