Exploitation Of Oscillation Control Device For Continuous Casting Mould Based On Can Bus

Mould is the most important production facility in casting technology. The form of the mould, as well as how to control the vibration of it is the prerequisite to obtain high-quality slab, which promotes the continuous casting technology progress and upgrade.The traditional vibration of the mould is in a mechanical way which was applied in a cycle, buy it wais replaced by hydraulic vibration gradually which has the advantages of high precision, fast response, high output power, flexible processing signals and the feedback of various parameters that is esay to realize.The vibration control device of continuous casting mould based on CAN bus in this paper, uses hydraulic vibration. It has obvious advantages compared with the previous conventional mechanical vibration. It can set vibration waveform online and modify the amplitude and frequency, through improving the lubrication of the mould power, it also can reduce the friction between the mould shell and the wall, reduce the slab vibration marks, improve the quality of the slab and the metal recovery rate. Using the SOPC technology based on FPGA,the control device completed the hardware programming of the following function models: the waveform generator, four A/D controller, two D/A controller, seven-segment LED display and drive, VGA drive controller. In the Nios II which is a soft-core processor, uses PID control arithmetic based on single netrul cell, through changing weight coefficient of itself to carry out self-learning, self-organization, to adapt the vibration situation of the mould in continous casting and attain a higher precision to the vibration of the mould. As an intelligent node of CAN bus, the control device can upload the following signals: amplitude, frequency and casting peed. Also it can receive instructions to amend vibration parameters and accept the monitor from PC.The design compiled and simuluated the HDL hardware description in the Quartus II software. The exploit tool-SOPC Builder is used to accomplish an entire system which was joined into the top design file of the system to complete the hardware part. The main system procedure was compied via C language in the Nios II IDE environment and realized feedback control of the vibration positon l of the mould. Finally, it extened part related module in the CT-SOPC exploit kit of Altera company and debugged by running on it, also, it validated all functions of the controller.