通过对数学模型的分析建
立了无刷直流电机仿真模型,用双闭环控制进行了仿真,验证了模型的可行性
-Through the analysis of mathematical models to establish simulation model of brushless DC motor, with double-loop control of the simulation to verify the feasibility of the model
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002344s ]
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:0.090507s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002407s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002167s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002379s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003766s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002049s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003385s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014889s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002880s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 146535 [ RunTime:0.001231s ]