Sponsored Links
This presentation is the property of its rightful owner.
1 / 70

第六章 其他控制系统 PowerPoint PPT Presentation


  • 63 Views
  • Uploaded on
  • Presentation posted in: General

第六章 其他控制系统. 第一节 选择性控制系统. 非正常工况时的控制系统安全保护性措施有两类: 一类是硬保护措施 一类是软保护措施. 硬保护措施就是联锁保护系统,当生产工况超出一定范围时,联锁保护系统采取一系列相应的措施,如有声和光警报产生、自动到手动、联锁等,使生产过程处于相对安全的状态。 缺点 : 这种硬保护措施经常使生产停车,造成较大的经济损失。. 软保护措施 :. 通过一个特定设计的自动选择性控制系统,当生产短期内处于不正常工况时,既不使设备停车又起到对生产进行自动保护的目的。.

Download Presentation

第六章 其他控制系统

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript



:


:


:


1

:

1




P2CaP1Cbb,

P2Caa,

P1Cb


2

:



2


1

:

1

2

3

4

5


:

1.

2.

3.


1

2


P1P2



A0.02MPa0.06MPaB0.06MPa0.1MPa




0.02MPa0.1MPa

  • 1R

Cmax

Cmin




2


AB

1

AB?

2


0.02 MPa0.06MPa

0.06 MPa0.1MPa


TC0.06MPaAB

TCB0.06MPaBA


3


AB

:




;

;


1


.


2




xy


1

MIMO


T1 T2Q2Q3

T1CP1T1

T2CP2Q2T2

T1T1oT2T2oT2CP2Q2T1T1T1oT2T2o


2



3

1

2

3

4


1



2

1

2

3



2

1

2

3


0.5

(IMC)


Smith



D (s)


(Safety Interlocking SystemSIS (Emergency Shut Down SystemESD)IPS


1

1)DIN V 19250 AK1AK818

2)IEC 61508 4SIL

3)ANSI/ISA S84.01-1996 IEC61508 DIN V 19250ANSI/SIA S84.01-1996SIL 4


2

1

Mean Time Between FailureMTBFti

MTBF


2)

Mean Time To RepairMTTR

MTTRMTBFMTBFMTTR


3)

MTTF

4)

A

5)

Rt


6)

(Fault Tolerance)

7)

Voting1 OO 21 OUT OF 2212 OO 22 OUT OF 2222 OO 32 OUT OF 332


8)

ESD

9)

Safety Integrity LevelSILESD



1


4

2

20047CSH/T3018-2003

1)


2)

3)


2OO32OO4D


1


2


1

2

3

4?

5


6

7

8

9

10



  • Login