有静差的转速单闭环直流调速系统的仿真模型，转速调节器采用比例控制器。-Have poor speed static single-Loop DC Motor Control System Simulation Model, speed regulator proportional controller.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002074s ]
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:0.090726s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002428s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001903s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002183s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003641s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002034s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003304s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014539s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002526s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 128358 [ RunTime:0.001221s ]
