混凝土搅拌站自动控制系统论文.pdf

中南大学硕士学位论文 A B S T R A C T
A B S T R A C T
T h e re qu irem e nt s o f c o n stru e tio n P ro e e ss sta n d ard ar e in c re a sin g ly
rigid w ith the national key Projeets of sp eeial railw 盯 line and som e
m uniciPal infrastructure eonstruetions im P lem ented gradu ally. H igh
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e o m P u ter,·n etw o rk an d fie ld b u s,th e au to m atio n u P g rad e s fo r c o n stru etiv e
e qu iP m en ts are u n d er a g e n d a .
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c o n e rete m ix in g statio n s o n th e b a sis o f fie ld b u s an d P L C 15 P re sent e d ,in
te rm s o f th e facts th at th e c u rrent ap P lie d c o n crete m ix in g statio n s w ith
sin g le ch iP e o re co n tro l sy ste m in S in o Ra il B ure a 1 1 h av e th e o e cu rren e e
o f h ig h m a lfu n ctio n rate ,th e c o m P lic ate d o P e ratio n int erfac e an d P ro e e du re ,
th e la e k o f frie n d ly h u m a n in terfae e ,an d th e in su ffi e ient au x ilia ry m an a g in g
九 n ctio n s. T h e M u ltiP le lev e l qo m P u ter c o n tro l sy stem 15 fo rm e d ,w h ere th e
b o tto m l/0 su b sy stem P e rfo rm s th e fu n c tio n s o f d ata a e q u isitio n s an d
m e ch a n ism e o n tro ls. In th e b o tto m l/0 su b sy ste m ,th e im P ro v e d P ID a n d
a g g re g ate d o o r sw iteh c o nt ro l o P tim iz atio n a lg o rlth m s g re atly im P ro v e d th e
a c c u ra cy o f a g g re g ate e o n fig u ratio n sy stem an d ‘th e an to m atio n lev e l fo r
P ro d u ctio n P ro eess,an d th e eon erete q u ality 15 also enh an ced . T h e uP P er
m o n ito rin g su b sy ste m ,o n th e b a sis o f d atab a se ,e ffe ctiv e ly su P P o rt th e
e n te rp rise P ro d u e tio n int e g ratio n m a n a g e m e nt th