The two approaches are: (1 ) the traditional theory of Fast Fourier Transform (FFT) and (2) the technique of cutting force vector locus variance which is determined by the data from a multi-axis force sensor.
针对立铣加工过程中影响加工精度、效率和刀具寿命的切削颤振现象提出切削力矢量轨迹分散值评价法，并与传统的快速富里叶变换法（ＦＦＴ）进行比较。
The strength g of the vector and the representative of the differential equation for vector track were obtained, with the vertical component gz and the horizontal component gx of gravitational anomalous vector generaed by studied objects in the profiles.
通过所研究地质体在剖面内产生的重力异常垂直分量gz和水平分量gx,求出了剖面内重力矢量强度g及矢量轨迹线微分方程的表达式,进而求出了矢量轨迹线方程。
The complex vector model for permanent magnet synchronous motors(PMSM) is presented and the performance of the equivalent complex current controller is investigated using complex vector root locus and complex frequency response functions.
建立了永磁同步电机复矢量模型,应用复矢量根轨迹法和复矢量频域分析法对复平面等价形式的永磁同步电机电流调节器性能进行了研究。
Real time closed-loop direct control for the stator flux vector loci is realizedand the control system is fully digitalized.
采用新一代单片微机８０Ｃ１９６ＫＣ，利用新颖的开关控制规则库，对定子磁通矢量轨迹进行直接的实时闭环控制。
