直接转矩控制，仅供参考，外加参考文献！！！！！！！！！！！！！！！直接转矩控制，仅供参考，外加参考文献！直接转矩控制，仅供参考，外加参考文献！(torqueThe　main　problem　of　the　direct　torque　control
(DTC) for permanent magnet synchronous motor (PMSM) was
analyzed,　i.e.　the　contradiction　of　fast　dynamic　response　and
the　serious　torque　and　flux　linkage　ripples.　 In　the　paper,　a
space　vector　modulation　(SVM)　technique　was　introduced　to
the　conventional　PMSM　DTC　system,　and　was　analyzed
throughly,　in order　to　obtain　a　optimal　resultant voltage　vector
for　accurate　torque　and　flux　linkage　control　and,　furthermore,)