文章提出了一种基于空间矢量的PWM 算法的全数字化变频器,简要介绍了利用tms320lf2407进行空间矢量脉宽调制的理论。-article presents a space vector PWM algorithm for the all-digital converter, briefed the use tms320lf2407 space vector PWM theory.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001020s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.123770s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001461s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001969s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001756s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005573s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001319s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.007044s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015472s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001121s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 315058 [ RunTime:0.020064s ]