Stratification of computer tasks 94 Example I 94 Example 2 96 Controllevels and computer input/output hardware 104 Leveli 105 Level 2 118 Level 3 118 Level4 118 Level5 119 Characteristics of process control computer systems 119 A survey of process control computer hardware 120 Communication codes and circuits 138 Channe1 capacity 138 Types of connection and communication hardware 140 Practical suggestions and recommendations 152 Rcferences 153 Part II: The Role of Software in Process Control Systems 155 Chapter 4: The relative roles of software and hardware 157 In troduction 157 Data processing 158 Hardware 159 Computingpower 163 Software for process control data processing 169 Process software 170 Intercomputer communication software 173 Message switching software 173 Software for engineering ca1culations 173 Extcnded real-time software 173 Software versus hardware 174 Program loop 175 References 183 Chapter 5: System software 185 Introduction 185 Basic concepts of real-time operating systems 186 Structure and functions of real-time operating systems 190 Data and symbols for the operating system 200 System software 204 Cost, safety and reliability of operating system software 208 References 209 Chapter 6: Application pro grams and databases 211 Introduction 211 Application program tasks 211 Structure and timing requirement of application programs 220 Direct communication 227 Multiprogramming constraints 228 Database and basic process software 233 Access to database 235 Basic faciJities of an on-line database 236 Database organization 240 Contention resolution 243 Distributed database 244 Extended real-time software 247 Referenees 257 Part III: The Man-Machine Interface 259
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I: Systems, Processes and the Role of Process Control Hardware.- 1: Signals, systems and process control.- A system approach to process control systems.- The computer control system.- Types of process.- Signals.- Types of signal.- Time-discrete signals.- A description of signals.- The information rate and content of process signals.- Communication of signals.- Systems.- Transfer function of time-discrete systems.- Time response of linear continuous systems.- Classification of linear systems.- Structuring of systems.- Systems and automata.- The basic analytical concept of process control systems.- References.- 2: The basic process unit.- The basic process unit.- Basic process unit data processing.- Process hardware for data input.- Measuring transducer.- Sensor or detecting device.- Signal converter.- Standard process input devices.- Process hardware for data output.- Final control devices.- Auxiliary data for process control.- References.- 3: Stratification of control tasks and data communication.- Stratification of computer tasks.- Example 1.- Example 2.- Control levels and computer input/output hardware.- Level 1.- Level 2.- Level 3.- Level 4.- Level 5.- Characteristics of process control computer systems.- A survey of process control computer hardware.- Communication codes and circuits.- Channel capacity.- Types of connection and communication hardware.- Practical suggestions and recommendations.- References.- II: The Role of Software in Process Control Systems.- 4: The relative roles of software and hardware.- Data processing.- Hardware.- Computing power.- Software for process control data processing.- Process software.- Intercomputer communication software.- Message switching software.- Software for engineering calculations.- Extended real-time software.- Software versus hardware.- Program loop.- References.- 5: System software.- Basic concepts of real-time operating systems.- Structure and functions of real-time operating systems.- Data and symbols for the operating system.- System software.- Cost, safety and reliability of operating system software.- References.- 6: Application programs and databases.- Application program tasks.- Structure and timing requirement of application programs.- Direct communication.- Multiprogramming constraints.- Database and basic process software.- Access to database.- Basic facilities of an on-line database.- Database organization.- Contention resolution.- Distributed database.- Extended real-time software.- References.- III: The Man-Machine Interface.- 7: Reduction and visualization of data and procedures.- Operator-system communication.- Visualization and data logging.- Recognition of process states.- References.- 8: Process management and control.- Process states.- Operator/process interaction.- Process protection and automatic actions.- References.- 9: The role of the operator in process control systems.- The operator’s role.- Controlling the operator’s work using a process control system.- The operator’s reaction to process control systems.- IV: System Design.- 10: The feasibility study.- Data volumes and flows.- Stratification of process control and basic system design.- Basic system design.- Communication hardware and software.- Cost/benefit analysis.- Investment costs.- Operating costs.- Benefits.- 11: Computer control system design.- Communication design.- Data transmission units.- Designing control and dispatching centres.- 12: Cost-effective system selection.- Buying and testing hardware.- Designing and testing software.- Testing at program unit level.- Testing at routine level.- Testing at program and system level.- Testing at acceptance level.- Human factors in system assembly.- External group work.- Internal group work.- Group state.- Group dynamics.- Group authority.- Programming teams.- References.- 13: The integrated approach.- Mounting and installation procedure.- Testing and reliability.- System commissioning.- Commissioning and safety.- Training personnel.- Maintenance.- References.- Author Index.
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Descrizione libro Springer, 1986. Condizione libro: Good. 1st Edition. N/A. Ships from the UK. Former Library book. Shows some signs of wear, and may have some markings on the inside. Codice libro della libreria GRP34005501
Descrizione libro Kluwer Academic Publishers, 1986. Hardcover. Condizione libro: As New. Dust Jacket Included. Sent within 24 hours. Expedited UK delivery available. NEW BOOK-MINOR SHELF WEAR. Codice libro della libreria BBI889238
Descrizione libro Kluwer Academic Publishers, 1986. Condizione libro: Fair. This book has hardback covers. Ex-library, With usual stamps and markings, In fair condition, suitable as a study copy. Dust Jacket in fair condition. Codice libro della libreria 3685823