background to process machinery maintenance programming

Ngày tải lên: 09/12/2013, 17:22

... without resorting to non-intuitive mathematics or to placing real plants at risk Thus, the basis of this text is to provide a practical, hands-on introduction to the topic of process control by ... only begun to see more widespread use recently? To answer this question, it is helpful to continue with the history of simulation and to consider the unique set of skills required to develop ... Emerson Process Man- 21 JWBK093-02 April 23, 2006 18:16 22 Char Count= Process control hardware fundamentals Ultrasonics can be top or bottom mounted Although a top-mounted device is easier to service,...

Ngày tải lên: 01/01/2014, 17:44

... 23-1 PROCESS -TO- PROCESS DELIVERY The transport layer is responsible for process- toprocess delivery—the delivery of a packet, part of a message, from one process to another Two processes ... DATAGRAM PROTOCOL (UDP) The User Datagram Protocol (UDP) is called a connectionless, unreliable transport protocol It does not add anything to the services of IP except to provide process -to- process ... Reliable Versus Unreliable Three Protocols 23.2 Note The transport layer is responsible for process -to- process delivery 23.3 Figure 23.1 Types of data deliveries 23.4 Figure 23.2 Port numbers 23.5...

Ngày tải lên: 06/03/2014, 12:20

... 2.4 2.5 xi Introduction to Computers and Programming Languages A History of Computers Computer Architecture Programming Languages Java Introduction to Object-Oriented Programming and Software ... early 1980s to add support for object-oriented programming Object-oriented programming is a style of programming gaining wider acceptance today Although the concept of object-oriented programming ... 16 Introduction to Object-Oriented Programming and Software Development I n t r o d u c t i o n B objectoriented programming efore we begin to write actual programs, we need to introduce a few...

Ngày tải lên: 08/03/2014, 02:20

... C++ Programs: Edit Preprocess Compile Editor Disk Preprocessor program processes the code Compiler Disk Compiler creates object code and stores it on disk Linker Disk Preprocessor Link Loader ... (stream extraction operator) • Used with std::cin • Waits for user to input value, then press Enter (Return) key • Stores value in variable to right of operator – Converts value to variable data type ... computer operations Clearer to humans Incomprehensible to computers – Translator programs (assemblers) • Convert to machine language Example: LOAD BASEPAY ADD OVERPAY STORE GROSSPAY © 2003 Prentice...

Ngày tải lên: 10/03/2014, 06:20

Ngày tải lên: 11/03/2014, 23:26

... expository texts where theory, verification and applications come together to provide a unifying coverage of a particular topic or topics E Rogers J O'Reilly Acknowledgement S This book brings into ... or a periodic input signal, should be used to enable the effect of the disturbances on the process output to be separated from the process response due to the input variable Introduction 1.2 USE ... relating each input to each output These models fall in a class which we will refer to as inputonly models where the process output is expressed as a function of only past values of the process input...

Ngày tải lên: 01/04/2014, 11:02

... pressure (a partial vacuum) to develop at the bottom of my toilet bowl? Where did the air sucked down into the drain go to? Here’s the way it seems to me: When we flush the toilet, the velocity or ... downcomer is too close to the tray below The high pressure drop needed for the liquid to escape from downcomer B onto tray deck causes the liquid level in downcomer B to back up onto tray deck ... increases the top reflux flow, here is what will happen: The tower-top temperature drops The amount of butane in the overhead propane product drops The tower-bottom temperature starts to fall The...

Ngày tải lên: 01/04/2014, 11:53

... 4.1.1 What is process modeling? Process Modeling 4.1 Introduction to Process Modeling 4.1.1 What is process modeling? Basic Definition Process modeling is the concise description of the total variation ... might be to maximize the yield of a process, to minimize the processing time required to fabricate a product, or to hit a target product specification with minimum variation in order to maintain ... Modeling 4.1 Introduction to Process Modeling 4.1.2 What terminology statisticians use to describe process models? Model Components There are three main parts to every process model These are the...

Ngày tải lên: 21/06/2014, 21:20

... How I select a function to describe my process? Process Modeling 4.4 Data Analysis for Process Modeling 4.4.2 How I select a function to describe my process? Synthesis of Process Information Necessary ... Knowledge into Function Selection Process Modeling 4.4 Data Analysis for Process Modeling 4.4.2 How I select a function to describe my process? 4.4.2.1 Incorporating Scientific Knowledge into Function ... less clear how to specify a functional form to initiate the modeling process A practical approach is to choose the simplest possible functions that have properties ascribed to the process Example:...

Ngày tải lên: 21/06/2014, 21:20

... appear to follow a straight-line model The next step will be to fit lines to each of these sets of data and then to compare the residual plots to see whether any have random errors which appear to ... way to try to bring the data in line with this assumption The main alternative to transformation is to use a fitting criterion that directly takes the distribution of the random errors into account ... straight, it seems safe to conclude that taking the ln of the pressure makes the distribution of the random errors approximately normal The histograms seem to confirm this since the histogram of the ln-ln...

Ngày tải lên: 21/06/2014, 22:20

... optimize my process using the process model? Process Modeling 4.5 Use and Interpretation of Process Models 4.5.3 How can I optimize my process using the process model? Detailed Information on Process ... information is given on how to determine the correct process inputs to hit a target output value or to maximize or minimize process output Some background on the use of process models for optimization ... 10:22:32 AM] 4.6 Case Studies in Process Modeling Ultrasonic Reference Block Study Background and Data Initial Non-Linear Fit Transformations to Improve Fit Weighting to Improve Fit Compare the Fits...

Ngày tải lên: 21/06/2014, 22:20

... http://www.itl.nist.gov/div898/handbook/pmd/section6/pmd62.htm [5/1/2006 10:22:37 AM] 4.6.2.1 Background and Data Process Modeling 4.6 Case Studies in Process Modeling 4.6.2 Alaska Pipeline 4.6.2.1 Background and Data Description of Data Collection ... re-measured in the laboratory These measurements were performed in six different batches The data were analyzed to calibrate the bias of the field measurements relative to the laboratory measurements ... AM] 4.6.2.4 Transformations to Improve Fit and Equalize Variances Process Modeling 4.6 Case Studies in Process Modeling 4.6.2 Alaska Pipeline 4.6.2.4 Transformations to Improve Fit and Equalize...

Ngày tải lên: 21/06/2014, 22:20

... 4.6.2.6 Compare the Fits Process Modeling 4.6 Case Studies in Process Modeling 4.6.2 Alaska Pipeline 4.6.2.6 Compare the Fits Three Fits to Compare It is interesting to compare the results of ... is to get in the right neighborhood, not to find the optimal fit We would pick the grid point that corresponds to the smallest residual standard deviation as the starting values Fitting Data to ... Studies in Process Modeling 4.6.3 Ultrasonic Reference Block Study 4.6.3.3 Transformations to Improve Fit Transformations One approach to the problem of non-homogeneous variances is to apply transformations...

Ngày tải lên: 21/06/2014, 22:20

... NUMERATOR DEGREE OF DENOMINATOR NUMERATOR A0 A1 A2 0.369E+00 -0.683E-02 DENOMINATOR B0 B1 B2 -0.112E-01 -0.306E-03 = = = 2 = -0.301E+01 = 0.100E+01 APPLICATION OF EXACT-FIT COEFFICIENTS TO SECOND ... Compare the Fits Process Modeling 4.6 Case Studies in Process Modeling 4.6.3 Ultrasonic Reference Block Study 4.6.3.5 Compare the Fits Three Fits to Compare It is interesting to compare the results ... http://www.itl.nist.gov/div898/handbook/pmd/section6/pmd64.htm [5/1/2006 10:22:55 AM] 4.6.4.1 Background and Data Process Modeling 4.6 Case Studies in Process Modeling 4.6.4 Thermal Expansion of Copper Case Study 4.6.4.1 Background and Data Description...

Ngày tải lên: 21/06/2014, 22:20