Industrial Control Systems Chapter 5 Industrial Control Systems
- Slides: 34
Industrial Control Systems Chapter 5 Industrial Control Systems 1
Process industries and Discrete Manufacturing industries n ����������� 2 ������ q q Process industries ������������� ���� liquid, gases, powders ������ Discrete manufacturing industries ������������� discrete part Industrial Control Systems 2
Level of Automation in the two industries n ���� 2 ����������� device ��� machine q Device level: ���������� Actuator ��� Sensor ������ n n q Process industries: device �������� , ��������������� Discrete industries: device �������������� Machine level: Industrial Control Systems 3
Variables and Parameter in the two industries n Variables and Parameter q q Process industries: ������� Continuous ���������� Analog ������������� Discrete industries: ������� Discrete ������ n n ��� binary ��� On, Off ���� Open, Closed ������ binary ���������������� Industrial Control Systems 4
Continuous ��� Discrete control Industrial Control Systems 5
Continuous ��� Discrete control n �������������� continuous ��� discrete Industrial Control Systems 6
Regulatory Control n n ���������������������� “Index of performance ” ��������� output variable ���������� feedback control Industrial Control Systems 8
Regulatory Control Industrial Control Systems 9
Feed forward control n n ������� disturbance ������� regulatory ����������� output Error ������� output ����������� feed forward control ������������� disturbance ������ parameter ������ Industrial Control Systems 10
Feed forward control n n ����������� sensor ����������� q q n ������������ feedback Actuator Algorithm (���������� ) ������� regulatory ��� feed forward control ����� process industries ������� discrete Industrial Control Systems 11
Feed forward control Industrial Control Systems 12
Steady-state optimization n ������ optimization techniques ����������� q q q ������� Index of performance ������������������� process variable ��� index of performance ������ parameter ��� process ��������� optimize ������ index of performance ������������� Industrial Control Systems 13
Steady-state optimization n Algorithm ����������������� parameter ������� optimal ������ open loop �������������� optimal Industrial Control Systems 14
Steady-state optimization Industrial Control Systems 15
Adaptive Control n n ������� steady-state ������� open loop ����������� disturbance ��������������� optimal ��� “Adaptive control” ���������� feedback control ��� optimal control ����������� process variable ������ algorithm Industrial Control Systems 16
Adaptive Control n n �� process ������� “time varying environment” �������� raw material, tooling, atmospheric ��������������� 3 ���� q q q Identification function Decision function Modification function Industrial Control Systems 17
Adaptive Control Industrial Control Systems 18
Discrete control systems n n ������� discrete ���� parameter ��� variable ��������� binary ������ 2 ������� q q Event-driven changes Time-driven changes Industrial Control Systems 19
Event-driven changes n n n �������� controller ���������������������� process ����������� event-driven q q q Robot load part to fixture ����������� plastic ���� part ��������� conveyor ���� optical sensor Industrial Control Systems 20
Computer Process Control n Control Requirements q q ������������� process ��� real-time Real-time controller �������������� process ��������� process ������� Real-time control ������� controller ���� “Multitasking” Multitasking ���������������� 22 Industrial Control Systems
Control Requirements Process-initiated interrupts 1. 1. 2. 3. Controller ������������ process ���� interrupt ������������ service ���� priority ������������������������ Industrial Control Systems 23
Control Requirements Timer-initiated action 2. 1. 2. ������������ console ������������������������ Run ���� optimal ��� parameter ����������������� Industrial Control Systems 25
Control Requirements Computer commands to process 3. 1. ������������ process ��������������������� hardware ������� System and program initiated events 4. 1. 2. System initiated ������������������������ �network Program initiated 26 Industrial Control Systems ������������
Capabilities of computer control n n ��������� computer ����������� controller ����������� real-time ��� process ������ real-time ������������� q q Polling Interlock Interrupt systems Exception handling Industrial Control Systems 28
Interlock n n Controller ��������� work cell ��������������������� Interlock ����������� -������� controller �������� q q Input interlock Output interlock Industrial Control Systems 30
Interrupt system Industrial Control Systems 32
Ex 5. 1 Single-level versus Multilevel Interrupt systems Industrial Control Systems 33
- Part 5 preparing a check stub and check
- Cash control system
- A computerized cash payments system that transfers funds
- Cash control systems
- Approaches of industrial relations
- Industrial braking systems
- Lg industrial systems
- Industrial ventilation design
- Electrical engineering
- Industrial automation systems
- "industrial systems"
- Experimental physics and industrial control system
- L
- Experimental physics and industrial control system
- Decision support systems and intelligent systems
- Engineering elegant systems: theory of systems engineering
- Embedded systems vs cyber physical systems
- Engineering elegant systems: theory of systems engineering
- Reforming the industrial world chapter 9 section 4
- Chapter 25 section 4 reforming the industrial world
- Chapter 14 lesson 1
- Lesson 1 the industrial revolution
- Industrialization and nationalism lesson 1
- Industrial engineering tools
- Reforming the industrial world chapter 9 section 4
- Chapter 17 business and labor in the industrial era
- Industrialization and nationalism lesson 1
- Chapter 6 a new industrial age answer key
- Chapter 9 section 1 the beginnings of industrialization
- Chapter 30 the making of industrial society
- Chapter 29 the making of industrial society
- Chapter 25 the industrial revolution
- The rise of industrial america chapter 16
- Chapter 9 section 4 reforming the industrial world
- Chapter 8 section 1 religion sparks reform