design of control systems ppt

... the topic of analysis and design of control systems An extensive bibliography to guide the student to further sources of information on control systems engineering is provided at the end of the ... representative sample of the many excellent references on analysis and design of feedback control systems and MATLAB Control Systems Anand, D.K., Introduction to Control Systems, 2nd ed., Pergamon ... course in control systems for engineering students of all disciplines Chapter presents a brief introduction to control systems The fundamental strategy of controlling physical variables in systems

Ngày tải lên: 01/01/2014, 18:43

... application software On the side of NCK, the commu-nication task is designed as application software based on real-time OS The com-munication task of MMI is designed as application software based ... between the Acc/Dec control task and the fine interpolationtask is a good example of the use of the ring buffer Whenever the Acc/Dec controltask is carried out once, the Acc/Dec profile for one block ... instead ofthe ring buffer makes the execution speed of the task predictable, the usage of sharedmemory has a positive influence on the reliability of the implemented NCK module.After the position control

Ngày tải lên: 11/08/2014, 20:21

... preserves the full set of diffeomorphisms and for this reason it is often called the ‘unbroken’... of this divergent structure, will give us a window into the workings of M-Theory Similarly ... the volume of the two-torus, and the last rewriting follows from straightforward trigonometry The logarithm of the g factor is the invariant entropy of the interface Inspection of the expression ... variety of critical phenomena in low-dimensional condensed-matter systems which, for lack of. .. sort of Dirac square root of gravity, for me it was the same fact, but stated as the SUGRA

Ngày tải lên: 28/06/2014, 23:20

... 161 control – D, 164 control – derivative, 164 control – feedback, 179 control – feedforward, 171, 173–178, 182 control – PI, 164 control – point-to-point, 160, 161 control – position, 161 control ... deceleration, 107–114 derivative control, 164 derivative controller, 164 derivative gain, 164 design of PC-NC and open CNC, 353 design of system kernel, 361 development of the machining cycle, 305 ... digital control”, ASME Transactions, Journal of Dynamic Systems, Measurement and Control, Vol 109, pp 65–68, 1987 151 Toshiba, “Numerical Control Unit”, US patent 5994863, 1999 152 University of Utah

Ngày tải lên: 11/08/2014, 20:21

... interpreter consists of soft-a psoft-arser, soft-an executor, soft-a psoft-ath genersoft-ator, soft-a msoft-acro executor, soft-and soft-an error hsoft-andler Theparser consists of a lexical analyzer, ... implemented using software are used in modernCNC systems The concept of the software interpolator originates from that of thehardware interpolator and the hardware interpolator is limited to control simple ... the quality of the machined surface poor.Also in this case, because a lot of program blocks are required, the size of the partprogram is large Because the size of the internal memory of CNC system

Ngày tải lên: 11/08/2014, 20:21

... movement of control point P i or the change of weight w iaffects the portion of the curve where the parameter u ∈ [ui,ui +p+1] • By adjusting the weight, the control point, and the knot vector of a ... used in today’s CNC systems In modern CNC systems, a soft-ware DDA interpolator is used, where the algorithm of the hardware DDA interpo-lator is implemented in software A software interpolation ... is the number of the pulses from rough interpolation and Acc/Dec control at time i t ipo is the it-eration time of rough interpolation and N is the ratio of the itit-eration time of rough interpolation

Ngày tải lên: 11/08/2014, 20:21

... result of Acc/Dec control for Block 1 Pulse Time (d) The result of Acc/Dec control for Block 2 Pulse Acc/Dec control Acc/Dec control Fig 4.13 X-axis interpolation and Acc/Dec control control for two ... trolling axes Setting the block control mode is one of the G-code functions Forexample, in the G-code system of the FANUC controller, there are two kinds of pathcontrol mode; exact stop mode (G61) ... by Eq 4.75 Trang 15The speed profile of the acceleration interval of Block N1 can be obtained byEq 4.73 and Eq 4.55 The speed profile of the deceleration interval of Block N2can be obtained by

Ngày tải lên: 11/08/2014, 20:21

... as a combination of singlecontrollers such as a PI controller, PD controller as well as PID controller Actually,for position control of machine tool axes, a P controller or a PI controller having ... derivative of position overtime is sensitive to noise.Above, the effect of different types of gain on the PID controller is explained.Therefore, in practice, a variety of combinations of P control, I control, ... PID controller can be utilized as a P controller for only proportional (P)control actions, an I controller for only integral (I) control actions, and a D controllerfor only derivative (D) control

Ngày tải lên: 11/08/2014, 20:21

... property of DOS or Windows OS can be overcome by various methods and themethod of designing a soft PLC system will be described together with design ofSoft-NC in the later in this textbook In Soft-NC, ... from Soft NC, Soft NC andSoft PLC can be regarded as the same system Soft PLC which is made by a userinterface and the PLC kernel based on the IEC1131-3 can be regarded as partialsystems of Soft-NC ... processor and one piece of software that controls single operations A single configuration is formed, even in the case of large-sized PLC systems with multiple processors, a variety of sources (multiple

Ngày tải lên: 11/08/2014, 20:21

... and compatibility of PLC systems, hardware-based PLCsystems have come to be replaced by software-based PLC, the so-called Soft PLCsystem A Soft PLC system is regarded as a software-oriented PLC ... milling function can machine off-a milling feoff-ature on the end of cylinder Figure 8.6b shows how off-a turning moff-achinecan generate a groove on the surface of a cylinder To carry out the ... of the key applications in MMI In general, the machine tool operator spends a lot of time learning how to generate a part program So, from the MMI designer’s point of view, the MMI should bedesigned

Ngày tải lên: 11/08/2014, 20:21

... traditional examples of resource protection, airplane ticket reservation systems and bank accounting systems are often given Before a flight, the seats of an airplane are located in the memory of the ticket ... that the status of processes can be changed to a variety of states According to the process activity, a process in a real-time OS can be classified as being in one of six kinds of state Current ... execution of a task during execution In this case, since stopping a task can only be done by an interrupt, the design of the OS kernel is simple However, because the OS kernel cannot control the

Ngày tải lên: 11/08/2014, 20:21

... shape of the raw workpiece, material of the workpiece, chucking position of the workpiece and so on. In this example, the material of the workpiece is steel named ‘ST-50’ and the initial shape of ... three types of STEP-CNC: (1) conventional control, (2) new control, and (3) new intelligent control, as shown in Fig. 11.23. Type 1 simply incorporates ISO 14649 in a conventional controller via ... Interpretation of part program - Verification of logical contents - Generation of Hardwaredependent Process Sequence Graph (HPSG) - Generation of toolpath - Generation of Executable

Ngày tải lên: 11/08/2014, 20:21

... 1ANALYSIS AND DESIGN OF FLEXIBLE SYSTEMSTO MANAGE DEMAND UNCERTAINTY AND SUPPLY DISRUPTIONS GEOFFREY BRYAN ANG CHUA NATIONAL UNIVERSITY OF SINGAPORE 2009 Trang 2ANALYSIS AND DESIGN OF FLEXIBLE SYSTEMSTO ... DISRUPTIONS GEOFFREY BRYAN ANG CHUA (M.Sci., University of the Philippines) A THESIS SUBMITTEDFOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF DECISION SCIENCESNATIONAL UNIVERSITY OF SINGAPORE ... concept of graphexpanders to provide a rigorous proof of the existence of a sparse partiallyflexible structure (not necessarily chaining) for a symmetrical system thataccrues most of the benefits of

Ngày tải lên: 14/09/2015, 08:39

... are often regarded as identical, there may be small differences in the carbon content 2006-06-27 Version 1.0 In replacement of New Page of 29 Guideline no Design of piping systems The design of ... replacement of New Page of 29 Guideline no Introduction This guideline provides general advice on the design of piping systems in the food industry The focus will be on the design and installation of ... Hygienic design of closed equipment for the processing of liquid food The guideline deals with specific examples of good and poor design of different components and piping systems

Ngày tải lên: 11/11/2016, 17:21

... Trang 1SPECIFICATION AND DESIGNOF EMBEDDED SYSTEMS by Daniel D Gajski Frank Vahid Sanjiv Narayan Jie Gong University of California at Irvine Department of Computer Science Irvine, CA 92715-3425 ... Behavioral synthesis Logic synthesis Software compilation Physical design Test generation Manufacturing Trang 6Introduction Design models and architectures System-design languages An example Translation ... 31Heterogeneous: Control/dataow graphdisableenable , enable / disable A1 A3/ enable A1,enable A2 Data flow graphs Control flow graph C Trang 32Control/dataow graphsMerits: correct the inability of DFG

Ngày tải lên: 19/06/2018, 14:33

... perspective of the ADRIATIC project for the design of reconfigurable systems-on-chip, as perceived in the course of theresearch during 2001 - 2004 The project provided: (a) a high-level hardware/software ... Level Design Methodology Design Flow for Reconfigurable Systems-on-Chip 87 KONSTANTINOSMASSELOS AND NIKOLAOSS VOROS 87 Trang 6OCAPI-XL Based Approach 133Part C Design Cases Prototyping of a HIPERLAN/2 ... hardware/software co-design and co-verification methodology and tools forreconfigurable systems-on-chip, supplemented with back-end design tools for the implementation of the reconfigurable logic blocks of the

Ngày tải lên: 20/03/2019, 14:44

... perspective of the ADRIATIC project for the design of reconfigurable systems-on-chip, as perceived in the course of theresearch during 2001 - 2004 The project provided: (a) a high-level hardware/software ... Level Design Methodology Design Flow for Reconfigurable Systems-on-Chip 87 KONSTANTINOSMASSELOS AND NIKOLAOSS VOROS 87 Trang 6OCAPI-XL Based Approach 133Part C Design Cases Prototyping of a HIPERLAN/2 ... hardware/software co-design and co-verification methodology and tools forreconfigurable systems-on-chip, supplemented with back-end design tools for the implementation of the reconfigurable logic blocks of the

Ngày tải lên: 19/04/2019, 14:02

... NotesFundamentals of Control Systems Instructor: Assoc Prof Dr Huynh Thai Hoang Department of Automatic Control Faculty of Electrical & Electronics Engineering Ho Chi Minh City University of Technology ... 2Chapter 9DESIGN OF DISCRETE CONTROL SYSTEMS Trang 3 IntroductionContent  Introduction  Discrete lead – lag compensator and PID controller  Design discrete systems in the Z domain  Design discrete ... Design discrete systems in the Z domain  Controllability and observability of discrete systems  Design state feedback controller using pole placement  Design state estimator  Design state estimator

Ngày tải lên: 10/02/2020, 01:18

... NotesFundamentals of Control Systems Instructor: Assoc Prof Dr Huynh Thai Hoang Department of Automatic Control Faculty of Electrical & Electronics Engineering Ho Chi Minh City University of Technology ... systems Rule 1: The number of branches of a RL = the order of the  Rule 1: The number of branches of a RL = the order of the characteristic equation = number of poles of G0(z) = n.  Rule 2:  ... 39Performance of discrete systemsTrang 40Time response of discrete systems Time response of a discrete system can be calculated by  Time response of a discrete system can be calculated byusing one of

Ngày tải lên: 10/02/2020, 03:32

... virtue of its method of operation and the valve may be held off its seat by an accumulation of quite soft deposits. This type of trap is usu- ally supplied pre-set to a specific amount of subcooling. ... 21 TEMPERATURE CONTROL VALVES 22 Manual Controls 22 Self-Acting Controls 22 Pilot Operated Controls 23 Pneumatic Controls 24 Proportional Control Bands 24 STEAM TRAPS AND THE REMOVAL OF CONDENSATE ... Traps First, a definition of a steam trap may be in order to fully understand the function of this piece of equipment. A steam trap is an automatic valve designed to stop the flow of steam so that heat...

Ngày tải lên: 24/03/2014, 10:20