Logical and sequential control is preferred for system design. These systems are more stable, and often lower cost. Most continuous systems can be controlled logically. But, some times we will encounter a system that must be controlled continuously. When this occurs the control system design becomes more demanding. When improperly controlled, continuous systems may be unstable and become dangerous.
When a system is well behaved we say it is self regulating. These systems don’t need to be closely monitored, and we use open loop control. An open loop controller will set a desired position for a system, but no sensors are used to verify the position. When a system must be constantly monitored and the control output adjusted we say it is closed loop. A cruise control in a car is an excellent example. This will monitor the actual speed of a car, and adjust the speed to meet a set target speed.
Many control technologies are available for control. Early control systems relied upon mechanisms and electronics to build controlled. Most modern controllers use a computer to achieve control. The most flexible of these controllers is the PLC (Programmable Logic Controller).
- Ebook is divided into 30 categories included:
+ 1 INTRODUCTION
+ 2 PROGRAMMABLE LOGIC CONTROLLERS
+ 3 PLC HARDWARE
+ 4 LOGICAL SENSORS
+ 5 LOGICAL ACTUATORS
+ 6 BOOLEAN LOGIC DESIGN
+ 7 KARNAUGH MAPS
+ 8 PLC OPERATION
+ 9 LATCHES, TIMERS, COUNTERS AND MORE
+ 10 STRUCTURED LOGIC DESIGN
+ 11 FLOWCHART BASED DESIGN
+ 12 STATE BASED DESIGN
+ 13 NUMBERS AND DATA
+ 14 PLC MEMORY
+ 15 LADDER LOGIC FUNCTIONS
+ 16 ADVANCED LADDER LOGIC FUNCTIONS
+ 17 OPEN CONTROLLERS
+ 18 INSTRUCTION LIST PROGRAMMING
+ 19 STRUCTURED TEXT PROGRAMMING
+ 20 SEQUENTIAL FUNCTION CHARTS
+ 21 FUNCTION BLOCK PROGRAMMING
+ 22 ANALOG INPUTS AND OUTPUTS
+ 23 CONTINUOUS SENSORS
+ 24 CONTINUOUS ACTUATORS
+ 25 CONTINUOUS CONTROL
+ 26 FUZZY LOGIC
+ 27 SERIAL COMMUNICATION
+ 28 NETWORKING
+ 29 INTERNET
+ 30 HUMAN MACHINE INTERFACES (HMI)
+ 31 LECTRICAL DESIGN AND CONSTRUCTION
+ 32 SOFTWARE ENGINEERING
+ 33 SELECTING A PLC
+ 34 FUNCTION REFERENCE
+ 35 COMBINED GLOSSARY OF TERMS
+ 36 PLC REFERENCES
+ 37 GNU Free Documentation License
>>> Link Download Ebook ( MEGA.NZ Link – Easy for Download )
+ Download Automating Manufacturing Systems Ebook.PDF
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