摘要
正余弦函数在任意次谐波电流的无锁相环ip-iq检测法中有着重要应用。本文在基于传统的CORDIC算法的理论分析和实验的基础上,提出了一些优化措施。采用VHDL语言完成了正弦函数、余弦函数的运算系统设计,给出了具体计算公式,通过了仿真与适配;利用三角函数的对称性,将输入角度的范围扩大到一个完整的周期。成功地实现了正弦函数、余弦函数的运算,仿真结果表明所设计的算法提高了运算速度、降低了系统所占用的硬件资源。
Sine 、cosine algorithm has important application in method for random harmonic current detection of ip-iq transformation without phase lock loop. This thesis proposes series optimized measures on the base of theoretical and experimental analysis of traditional CORDIC .Realizes sine 、cosine algorithm with VHSIC Hardware Description Language （VHDL） , and the equation and the RTL frame are given,and pass simulation and adaption. Using the symmetry of trigonometric function , the scope of the input angle is extended to a intact circle. Realizes sine、cosine algorithm,The simulation results indicate that the algorithms improves computing speed and reduces the system hardware resources occupied.
出处
《电子测试》
2011年第3期60-62,共3页
Electronic Test
