VIDEOTELE M2-E422-E2 CP-ENC ADVANCED ENCODER CARD, 1 CHANNEL MPEG-2 4:2:0按照屯機過渡過程的可論及假定。不考慮,軸電流,用下標(biāo)8,分別定子轉(zhuǎn)子分量,下標(biāo)下,分別及小祜止坐標(biāo)系上由口軸分敲,令沉,扣,為定子電流=機廣和轉(zhuǎn)子MM Jxr7組成的狀態(tài)變量,定子電壓,8機的數(shù)學(xué)模型寫為狀態(tài)方程的形式56!考慮到狀態(tài)中的扣就是系統(tǒng)的輸出,因此可以構(gòu)造出降階觀測器來估計也觀測誤差士也的主要來源是定轉(zhuǎn)子電阻誤差電壓的誤差廣也k k基可,當(dāng)7=時,降階觀測器退化為電壓型磁通觀測器,當(dāng)0時,降階觀測器變?yōu)殡娏餍痛磐ㄓ^測器。式2中的誤差來源主要有項轉(zhuǎn)子電阻誤差應(yīng)4幻的;定子電阻誤差應(yīng)穩(wěn)態(tài)時為正弦波,其頻率與電機定子電壓電流頻率相同,可看作位于頻帶上之的信是矢量控制系統(tǒng)中可能出現(xiàn)的大滑差。

可用個定子頻率的正弦波加個功率受限的信號來建模。為簡化設(shè)計,上述與定子電流同頻率的信號用個帶通環(huán)節(jié)丑中玳替。從而,為了使觀測器誤差小,需要小化2仿真結(jié)果為驗證所設(shè)計的降階磁鏈觀測器的性能。作者用河以吐作了仿真研充仿真所用參數(shù)與實際系統(tǒng)完全,只是不考慮,波形的影響作為比較,時用隨山按照文3中提出的改進的電壓型77法迸廳磁鏈觀測,異步電機運行在=0.7標(biāo)幺值轉(zhuǎn)速上,在,差2和3是輸入電壓上疊加了方差為2的白噪聲時的觀測誤差可以沂出,降階觀測器抑制噪聲的能力要比電壓模型強得多。推桿同定板推板8.動模座板9.澆口20.滑塊塊2.動模套板22.動校小鑲件23.塊鑲件24.定模套板25.熱塊26.橫澆道27.溢流槽模劑,油缸將各滑塊鑲塊插入型腔,然后合模,這便完成個工作過程。
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