Designing And Realizing Control System Of AC Motor Drivers Based On DSP

Along with fast development of semiconductor, such as the DSP, the accuratea synchronous motor model and all kinds of advanced theories that have resulted in the development of a highly reliable AC motor controller highly accurate and variable speed controls. In order that motor model is more accurate, Amount of acquiring data is very large and request of data acquisition speed and data's accretion are higher. Because of adopting DSP, implementing control function when realization of data acquisition, it could simplize the system and enhance the system trustiness.DSP chip is a kind of microprocessor that has special architecture. Interiorly, DSP chip takes use of Pipeline Operation and Havard Bus Structure-program bus apart from data bus, and have an exclusive multiplier. These merits of hardware resource make DSP complete an addition operation and a multiplication operation in a clock cycle. Because of special architecture, DSP can implement many digital signal proceesing Algorithm. TMS320LF2407 that producted by TI has many adventages in motor applications, it will make permances of data acquisition system better. Because TMS320LF2407 has many pins and low voltage supply, the designing is more complex. Acquiring data precision, anti-jamming ability of sampling data channels, communications speed, ADC precision and so on should take account to meet the system.Software designing is according to hardware. The software is divided into the tasks depend on data acquisition system functions. In order to organize the tasks of the system and reduce wastage of resource, this paper use mesure of designing software - a kind of schedulers organizes the tasks to meet their time limit. The scheduler organizes the tasks to protect that the system safely and reliably runs.