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研究了现场可编程门阵列(field-programmable gate array,FPGA)Nios II多核实现方法,讨论了电池RC模型和加权PID算法。通过运用多核控制算法和FPGA实现提高了实时处理速度。根据电池的外特性搭建了锂离子电池RC模型,依据电池模型的系统特性设计了加权PID算法,用Nios II多核对加权PID控制器进行实现,进行了基于FPGA和dSPACE实时仿真系统的电池充电实时仿真实验。实验结果表明,基于Nios II多核的加权PID控制器可以很好地控制电池在设定条件下快速充电。
The realization method of field-programmable gate array (FPGA) Nios II multi-core is studied. The battery RC model and weighted PID algorithm are discussed. Real-time processing speed is increased by using multicore control algorithms and FPGAs. Based on the external characteristics of the battery, the RC model of lithium-ion battery was built. The weighted PID algorithm was designed according to the system characteristics of the battery model. The Nios II multi-core weighted PID controller was used to realize the battery charging real-time simulation system based on FPGA and dSPACE. Simulation. The experimental results show that the weighted PID controller based on Nios II multi-core can control the battery fast charging under the set conditions.