| Filter is an important component of the apparatus for observing solar magnetic field. Adjusting wave bend of filter provides the main reference for building electricity-control system, meanwhile, has great significance to simplify the observation and enhance the entirety performance.Flexible NIOSII process has been adopted in this thesis to design a control system which is used for adjusting the wave band in the filter. The system consists of four parts, the hardware platform, the program of driver and control, the user interface. There are two parts in the designing of hardware platform, the hardware of function block design and the FPGA design. Circuit design covers the chip selection, scheme, comparison and PCB production. A storage solution based on FRAM which is an important issue in dissertation has been proposed to avoid the motor position date lose caused by power-down, and this proposal would ensure the security of system in a certain extent.C language was employed for designing the program. The program achieved bottom circuit design by referring to the structures of intellectual property core register and applying HAL functions provided by Altera. This part mainly completes the design work of the driver of the communication and memory module, the compilation work of relative and absolute motion and so on 11 concrete functions. Finally realized all functions of wave motion control system, the number of motor control has been increased to 12.User interface designed with the MFC class library provided by the Microsoft. According to the use habits of the observers, the thesis designed an application based on WIN32, which is mainly used to display the current position of motor and send all kinds of control instructions.According to the result of the test, the design of the control system meet the basic filter waveband control system performance requirements. In addition, the related methods and results are applicable to engineering application of the stepper motor control. |
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