casestudy1boilercontrol锅炉控制

casestudy1boilercontrol锅炉控制内容摘要：

oint out the kind of control methods ? (2) Obtain control diagram of the scheme. (3) Select the controller action, the symbol and the value of C2, if the valve is a failopen valve and C1=1. S t e a mD r u mL T1 1L C1 1Hs pHmu = C0+ C1IL+ C2IVF ( t )D ( t )H ( t )F e e d w a t e rF T0 2∑IVILThreeelement (三冲量 ) Control 0 50 100 150 200 250 300 350 4004849505152D r u m L e v e l%0 50 100 150 200 250 300 350 40045505560F e e d w a t e r F l o w%T i m e , m i nT h r e e e l e m e n t c o n t r o lS e t p o i n tO n e e l e m e n t c o n t r o lS t e a m F l o w i n c r e a s e s f r o m 1 0 T / h r t o 1 1 T / h r Control Diagram ? S t e a mD r u mL T1 1L C1 1Hs pHmF ( t )D ( t )H ( t )F e e d w a t e rF T0 2∑IVILF T0 1F C0 1Fs pFmuTwo Simplified Connections of Threeelement Systems L CC1PC + C2PS + C3PF+ C0F e e d w a t e r F l o wS t e a m F l o wD r u m L e v e lPCPF∑C1C2C3PSF e e d w a t e r V a l v eC1PC + C2PS + C3PF+ C0F e e d w a t e r F l o wS t e a m F l o wD r u m L e v e lPCPF∑C1C2C3PSF e e d。