lý luận chung về chi phí kinh doanh và giá thành sản phẩm trong doanh nghiệp
GMP SIMATIC STEP7 EN
Ngày tải lên :
10/10/2014, 21:50
... A5E01100600-01 2.10 Retrieving Archived Data Archived data must be retrievable at all times Following system updates, care must be taken that the data transferred to archive prior to the update remains ... problems in a plant is strongly recommended 2-10 Guidelines for Implementing automation projects in a GMP environment A5E01100600-01 2.9 Data Backup In contrast to the archiving of electronic data, ... alarms, etc to be archived with unequivocal time stamps Time synchronization to a standard time is desirable, however not absolutely necessary Time synchronization when archiving data and analyzing...
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Analysis and design of control systems using MATLAB
Ngày tải lên :
01/01/2014, 18:43
... direction Nontouching Loops: Loops that not have any nodes in common Nontouching: Two loops are nontouching if these loops have no nodes in common A loop and a path are nontouching if they have ... loop and a path are nontouching if they have no nodes in common Nontouching-Loop Gain: The product of loop gains from nontouching loops taken two, three, and four, and so on at a time Number of ... derive their valuable accurate reproduction of the input from feedback comparison The general architecture of a closed-loop control system is shown in Fig 1.7 A system with one or more feedback...
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Tài liệu Financial Systems and Auditing Test of Control ppt
Ngày tải lên :
22/12/2013, 15:15
... Objectives of Control • • • • • • Purchase only made when there is a genuine need Value for money is achieved Goods /services delivered is satisfactory Liabilities are recorded completely and accurately ... of a sequence check Purchase Invoice Serial numbering Evidence of sequence check Evidence of matching purchase invoices with GRNs and purchase order Evidence for checking casts, extensions and ... further processing Examples of Control Test…cont Documents Test For Credit Note Evidence of matching credit notes to goods returned notes Payable ledger Evidence of authorization of all adjustments...
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Absolute stability of nonlinear control systems 2ed liao x yu p
Ngày tải lên :
01/01/2014, 17:47
... Hubei, China and P Yu University of Western Ontario Ontario, Canada Xiaoxin Liao Department of Control Science and Engineering Huazhong University of Science and Technology 430074 Wuhan, Hubei China ... (t, x)) ∈ U, and (t + h, x(t, x)) ∈ U Let L be the Lipschitz constant of V (t, x) in x on U Making use of the Taylor expansion and the Lipschitz condition we arrive at V (t + h, x(t, x)) − V (t, ... solution of system (1.2) became globally stable but restricted to cases n = 2, Very little has been achieved for n ≥ Now, almost nobody continues to follow the Aizrman conjecture to study the global...
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Digital control systems theory hardware software constantine h houpis gary b lamont
Ngày tải lên :
01/01/2014, 20:24
... been achieved, then a compensator must be inserted into the system The compensator is designed so that the system achieves the desired perfor mance specifications Two possible approaches for achieving ... ideal system perfonnance is achieved For a practical control system, physical realiz ability of components limits the extent to which the ideal system perfonnance can be achieved The advent of the ... performance speci fications are achieved Emulate test, and iterate the implemented design Technical knowledge of con temporary digital-computer hardware and software architectures has a critical in...
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Tài liệu Design of Feedback Control Systems for Stable Plants with Saturating Actuators ppt
Ngày tải lên :
18/02/2014, 10:20
... at to if the function f satisfies the Lipschitz condition locally around t o [14] Note that the function g(x) given in definition 3.1 satisfies the Lipschitz condition locally if the conditions ... system operates in the nonlinear region new performance criteria have to be defined and new ways of achieving the desired performance must be developed There are two major problems that multiple saturations ... systems requires good modelling, is difficult to calculate open loop solutions, or the resulting switching surfaces are complicated to work with For these reasons, in most applications the optimal...
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Jim ledin embedded control systems in c and c++ an introduction for software developers using MATLAB 2004
Ngày tải lên :
19/03/2014, 14:09
... test If satisfactory system performance is achieved, you are done If excessive overshoot and oscillation occur before acceptable response time is achieved, you will need to add a derivative term ... performance (other than steady-state error) is achieved, go to step If excessive overshoot and oscillation occur before acceptable response time is achieved, you will need to add a derivative term ... mathematical rigor in the procedures, thorough testing of the resulting control system design is strongly advocated For the more advanced algorithms, this book demonstrates how to apply the best...
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QUASILINEAR CONTROL: Performance Analysis and Design of Feedback Systems with Nonlinear Sensors and Actuators pot
Ngày tải lên :
23/03/2014, 15:20
... Actuators ShiNung Ching Massachusetts Institute of Technology Yongsoon Eun Xerox Research Center Webster Cevat Gokcek Michigan State University Pierre T Kabamba University of Michigan Semyon M ... actuators / ShiNung Ching [et al.] p cm Includes bibliographical references and index ISBN 978-1-107-00056-8 (hardback) Stochastic control theory Quasilinearization I Ching, ShiNung QA402.37.Q37 ... 10013-2473, USA www.cambridge.org Information on this title: www.cambridge.org/9781107000568 © ShiNung Ching, Yongsoon Eun, Cevat Gokcek, Pierre T Kabamba, and Semyon M Meerkov 2011 This publication...
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schaum's outline of feedback and control systems
Ngày tải lên :
01/04/2014, 11:13
... input and output for an automatic washing machine Many washing machines operate in the following manner After the clothes have been put into the machine, the soap or detergent, bleach, and water ... 100%cleanliness has been achieved 1.6 How are the following open-loop systems calibrated: ( a ) automatic washing machine, ( b ) automatic toaster, ( c ) voltmeter? Automatic washing machines are calibrated ... completed, the machine shuts itself o f f If the proper amounts of detergent, bleach, and water, and the appropriate temperature of the water are predetermined or specified by the machine manufacturer,...
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design of distillation column control systems
Ngày tải lên :
01/04/2014, 11:24
... windup and override capabilities In adchion, they provide more advanced logic capability, dead-time simulation, and adaptive tuning Some of the last named achieve self-tuning via stochastic techniques ... close as possible to a desired composition.t It is usually true that minimum operating cost is achieved when the products are controlled at minimum acceptable purities This is so because the relationship ... Column controls should facilitate startup and shutdown and, by implication, should make it easy to achieve total reflux operation when desired Transitions When it is desired to change product compositions,...
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stochastic modeling of manufacturing systems advances in design, performance evaluation, and control issues - g. liberopoulos
Ngày tải lên :
08/04/2014, 12:26
... Motivation for considering non-exponential machines The case of non-exponential machines is important for at least two reasons: First, in practice the machines often have up- and downtime distributed ... are available Machine up- and downtimes are distributed identically (i.e., exponentially) Machine up- and downtimes may have different distributions Coefcients of variation of machine up- and downtimes ... machine mi , i = 1, , M , has two states: up and down When up, the machine is capable of processing one part per cycle time; when down, no production takes place The cycle times of all machines...
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báo cáo hóa học: " Point to point control of fractional differential linear control systems" doc
Ngày tải lên :
21/06/2014, 02:20
... ts In other words, we are looking for such an open-loop control function v = v(t), which will achieve it in a finite time interval tf - ts The start and final points will be also called the terminal ... ϕ) (t) = s i=2 ( (i 1 (t − 1) (i−2) − 2) + 1) Finally, complete control (3.28) applied to Λ, achieving the task, is u(t) = −x1 +3x2 + √ 3 −12 ( ) + 5π ( ) + 4π ( ) −36 ( ) + 15π ( ) + 2π 4 4 ... candidates for control functions presented in the article is not the only one possible Other functions achieving the task can also be found Since in our approach no restrictions are posed on the trajectory...
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Báo cáo hóa học: " Research Article Stabilization of Discrete-Time Control Systems with Multiple State Delays" doc
Ngày tải lên :
21/06/2014, 20:20
... established in Proposition 3.2, the result follows Acknowledgment This research was supported by Fondecyt Chile under Grant no 1.070.980 References V Lakshmikantham, S Leela, and A A Martynyuk, Stability ... equations,” Journal of Difference Equations and Applications, vol 10, no 12, pp 1085–1105, 2004 A Feliachi and A Thowsen, “Memoryless stabilization of linear delay-differential systems,” IEEE Transactions...
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Báo cáo hóa học: "Analysis of Effort Constraint Algorithm in Active Noise Control Systems" pdf
Ngày tải lên :
22/06/2014, 23:20
... block diagram function is presented This cost function does not guarantee system linearity, but it achieves suitable ranges as a necessary condition for linearity Simulation and experimental results ... similarly as in [9], it is easy to see from (21) that V∞ → if S = S Henceforth, the weight vector W achieves EURASIP Journal on Applied Signal Processing its optimum weight in the steady state If S ... obtained up to KHz Comparing Figures 13 and 14, it is clear that an attenuation of about 30 dB is achieved at 270 Hz in both FXLMS and the proposed EURASIP Journal on Applied Signal Processing 40...
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robust adaptive model predictive control of nonlinear systems
Ngày tải lên :
27/07/2014, 23:44
... global Lipschitz constants to determine a bound on the the worst-case distance between a solution of the uncertain model (12), and that of the underlying nominal model estimate This Lipschitz-based ... eKf T L ∗ ↑ ∗ ¯ where KW is a Lipschitz constant of W i ( x, Θ) over the compact domain X0 ∩ Xfi (Θ), maximal over all Θ ∈ cov {Θo } Likewise, K L is a Lipschitz constant of L( x, u) with respect ... Fax: +385 (51) 686 166 www.intechopen.com InTech China Unit 405, Office Block, Hotel Equatorial Shanghai No.65, Yan An Road (West), Shanghai, 200040, China Phone: +86-21-62489820 Fax: +86-21-62489821...
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Dynamic modeling and control of engineering systems
Ngày tải lên :
28/07/2014, 19:10
... section showing how to achieve the same ends using the Laplace transform It is hoped that this dual approach will enrich student understanding of this material In approaching these, and other, ... inputs that would suddenly add to the stored energy in a system are not realistic and cannot be achieved in the natural world 2.2.3 Translational Dampers An ideal damper is shown in free-body diagram ... symbol designation and a nonlinear function to describe it: TNLS = fNL (1 − 2 ) Linearization to achieve a local incremental stiffness Kinc is often feasible, as in the previously discussed case...
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Analysis and Control of Linear Systems - Chapter 0 pptx
Ngày tải lên :
09/08/2014, 06:23
... 1-905209-35-5 ISBN 13: 978-1-905209-35-4 Printed and bound in Great Britain by Antony Rowe Ltd, Chippenham, Wiltshire Table of Contents Preface xv Part...
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- tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam
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- nội dung cụ thể cho từng kĩ năng ở từng cấp độ
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- phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ
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