Design Of General Control Development Platform Based On Simulation Object

With the development of science and technology, the control system which consists of controlling computer and PLC has been widely used in the process of industrial production. The characteristic of this control system is that the PLC collects industrial signals and then delivers them to the controlling computer. The signals will be sent to the PLC after being processed by the controlling computer according to the control algorithm. At last, the PLC controls the performed device so as to realize the industrial process control. However, the industrial field exists the question of needing to adjust control strategy online frequently, debugging inconvenient and the limited time when the control system is practically applied. If we can simulation test the control system offline in the laboratory before, we will shorten the debugging time in the control field and improve the pertinence and reliability of the system.In accordance with the questions existed in the industrial filed, we design the general control development platform based on simulation object. The hardware of the platform consists of controlling computer, PLC, data acquisition card and simulation computer. We use ABB AC500series PLC and Rockwell ControlLogix series PLC, both can be replacement. Rockwell PLC has three layers of network structure and can realize the integration of multi field bus. The communication between PLC and controlling computer is realized by OPC. Data exchange between PLC and simulation computer through data acquisition card. The configuration software WinCC and Matlab are installed in the controlling computer which is used to implement control algorithm and adjust control strategy. We also design the monitor screen so as to display control effect and observe the correctness of the control algorithm. The Matlab is installed in the simulation computer which is used to establish the model of the control object and then simulates the model. After the platform is established, we debug it. In order to verify the feasibility and generality of the platform, we have carried out the PID control simulation experiment, the dynamic matrix control simulation experiment and the active disturbance rejection control simulation experiment on the platform.Experiment results show that the simulation of PID control, dynamic matrix control and active disturbance rejection control have good effect on the platform. This platform achieves the expected design target and has good application value.