linear undamped single degree of freedom systems

... Cartesian Tab • In the Number of Grid Spaces area type in the X direction edit box • In the Number of Grid Spaces area type in the Y direction edit box • In the Number of Grid Spaces area type in ... Analyze menu select Set Options to display the Analysis Options dialog box • Uncheck all of the Available DOFs check boxes except for UX • Verify the the Dynamic Analysis check box is checked • ... dialog box • In this dialog box: À À À 17 Verify that the Number of Modes is Verify that the Eigenvectors option is selected in the Type of Analysis area Click the OK button twice to exit all dialog...

Ngày tải lên: 06/07/2014, 09:20

... gian tìm hiểu, học viên định chọn điều khiển Two -degree- of- freedom- control làm đối tượng nghiên cứu Dựa vào lý thuyết điều khiển Two -degree- of- freedom- control, học viên áp dụng để điều khiển đối ... phương pháp điều khiển hệ thống có trễ, tập trung vào phương pháp Two -degree- of- freedom- control - Kết hợp điều khiển Two -degree- of- freedom- control với điều khiển Tự chỉnh định STR - Áp dụng phương ... tốt Two -degree- of- freedom- control để tiến hành nghiên cứu phát triển, sau áp dụng vào hệ quạt gió phẳng để kiểm chứng Chương 2: Trình bày chi tiết lý thuyết điều khiển Two -degree- of- freedomcontrol...

Ngày tải lên: 26/05/2014, 00:05

... 0.08 ± 0.1 0.06 ± 0.1 grey value match of CBCT2 with planning CT group mean error (M) root mean square of random errors (σ) Degree of freedom (DoF) In a total of fractions, the initial IR-based position ... Infrared, CBCT = cone-beam CT, DoF = degrees of freedom The position of the infrared markers, as read by the ceiling mounted infrared cameras is saved within the PatMon software (= IR-dataset1) After ... mechanical arm Patients can be positioned with any pitch, roll or yaw rotation of the head offering additional degrees of freedom for treatment planning or improved patient comfort Wilbert et al...

Ngày tải lên: 09/08/2014, 08:23

... Damped-free vibration of two-dof systems Consider a two degrees of freedom system with damping as shown in figure x1 k1 c1 m1 x2 k2 c2 m2 k3 c3 Figure Now the equation of motion of this system can ... the normal modes of vibration of a double pendulum with same length and mass of the pendulum Develop a matlab code for determination of free-vibration of a general two -degree of freedom system ... Absorber Consider a vibrating system of mass m1 , stiffness k1 , subjected to a force F sin ωt As studied in case of forced vibration of single- degree of freedom system, the system will have...

Ngày tải lên: 29/08/2014, 22:44

... systems – Uncoupling of the Equations of motion Equations of motion of an undamped multi -degree of freedom system The displacement vector can be written as a linear combination of the mode shape ... 53/58:153 Lecture Fundamental of Vibration Orthogonality of undamped free vibration mode shapes An n degree of freedom system has n natural frequencies ... orthogonality: Proof: Mass nomalization: -2- 53/58:153 Lecture Fundamental of Vibration Stiffness orthogonality: Proof: Modal superposition for undamped systems...

Ngày tải lên: 29/08/2014, 22:45

... functions of the number of pilot symbols and feedback bits The optimal amount of pilot symbols and feedback bits as a fraction of the size of the radio frame is derived under the assumption of a constant ... standardization of past and current mobile communication systems 12 EURASIP Journal on Advances in Signal Processing (2) The merits of feedback systems should always be weighted against the loss of resources ... makes use of the whole uplink band for feedback As we will see in Section 4.6, this system is most happy with a feedback bandwidth of exactly 1/3 of the available bandwidth, as the number of antennas...

Ngày tải lên: 21/06/2014, 22:20

... extension of the theory to the measure of degree of connectedness of random factors is illustrated in this example by calculations of D and &*( for breeding dquo;’ values (table II) Sources of unbalancedness ... a particular comparison among levels of some factor or for a global evaluation of their degree of connectedness Applications of these criteria to degree of connectedness among sires in a reference ... is of interest to look at the degree of connectedness between this group factor and other fixed effects, or equivalently to degree of connectedness among group levels due to the incidence of...

Ngày tải lên: 14/08/2014, 20:20

... boundaries, etc.) Examples of open systems are: groundwater systems, social systems, as well as most of the natural systems Four types of variables characterize a model of a system (Kramer and De ... promoter University of Twente, assistant promoter Prof dr.ir A.Y Hoekstra Prof dr.ir H.G Wind Prof dr.ir A.E Mynett Prof dr S.M de Jong Dr M.J Titus University of Twente University of Twente UNESCO-IHE ... five different types of integration within the framework of Integrated Assessment Modelling (IAM) These are integrations of disciplines, of models, of scales, of issues, and of stakeholders Scrase...

Ngày tải lên: 06/11/2012, 10:35

... their dome of reddish air As he shuffled around the column, fragments of river wound into the sun's glare, reflecting myriads of tiny diamonds – a lesson in subtlety for the mirror-glass office tower ... out there somewhere, tens of thousands of them, but none were aware of his existence No one knew anything about him The thought triggered a subtle, almost guilty flush of pleasure Arranged over ... bookkeeping of their small importing company Compared to most of her acquaintances she had a happy life Two trips back to France over the years had reinforced the rightness of her choice After a week of...

Ngày tải lên: 06/11/2012, 14:13

... confident level of 90% (app.D, p 84-86) 4.1.10 Demographic profile of supermarkets’ non-users and heavy-users The demographic profile of heavy users in the sample is similar to the profile described ... shoppers’ expectations of this kind of store In addition, the demographic profile of the store’ users and non-users (but potential ones) will be also describes in terms of purchasing power, occupations ... viability of supermarkets in Vietnam and give some ideas for performance’s improvement 1.3 Research objectives • to identify demographic and psychographic profile of shoppers and non-shoppers of this...

Ngày tải lên: 13/04/2013, 10:30

... walls of office buildings and the floors of residential units for temperature control, while only distributing the volume of air required for ventilation This decoupled system allows for 100% of ... (0.3048 m) off of the rear wall as shown in Figure 4, which gives an area of 2.25 ft2 (0.2090 m2) for each vent Case has a volume of 1,368 ft3 (38.74 m3) By meeting the guidelines of four air ... The outlet vent area of Case is double the size of the outlet vent area of Case Each outlet vent is of the size, 9" × 36" (0.2286 m × 0.9144 m) spaced 12", giving an area of 4.5 ft2 (0.418 m2))...

Ngày tải lên: 05/09/2013, 15:28

... rate the quality of the training on a scale of 1-10 ranging from poor to excellent and the degree of adequacy of the knowledge acquired from the training sessions on a scale of 1-10 ranging from ... (NSTDA); iii Office of the Basic Education Commission (OBEC); iv Office of the Non-formal and Informal Education (ONIE); v Vocational Education Commission (VEC); NSTDA (2008) Memorandum of understanding ... this single case is that the transformation to sustainable forms of energy in rural areas of developing countries may take time and need a lot of efforts Even if the energy is provided for free of...

Ngày tải lên: 05/09/2013, 16:10

... to the high price of PV modules, even if it has declined steadily since 1985 [6] Due to the minimal maintenance of PV systems and the absence of real benefits of economies of scale during construction, ... two principal PV systems described in the following sections are the grid connected (or on-grid) systems and the stand alone systems (or off-grid) systems 3.5.1 Grid connected systems In grid ... the basis of the power delivered under Standard Testing Conditions (STC) of 1kW/m² of sunlight and a PV cell temperature of 25°C Their output measured under STC is expressed in terms of “peak...

Ngày tải lên: 05/09/2013, 16:10

... invented the method of automatic control of the weaving of fabrics with a loom machine by using punch cards and this method was the beginning of the concept of NC The concept of NC was actually ... sensor of a servo motor 1.3.2 Linear Movement Guide A ball screw is used to move the tool post or table and plays the role of changing the rotation of a servo motor into linear movement A Linear ... role of controlling the machine’s behavior with the exception of servo control Figure 1.13 shows the conceptual architecture of CNC machine tools from the hardware and software points of view Software...

Ngày tải lên: 08/09/2013, 20:50

... consisting of various computers, storage systems, application software, and databases Design of a new application for an existing database or design of a brand new database starts off with a ... recovery subsystems of a DBMS Economies of Scale The DBMS approach permits consolidation of data and applications, thus reducing the amount of wasteful overlap between activities of data-processing ... describes some of the main characteristics of database systems, and Sections 1.4 and 1.5 categorize the types of personnel whose jobs involve using and interacting with database systems Sections...

Ngày tải lên: 07/12/2013, 11:33

... with turning motors on/off, regulating speeds, etc., to perform a single process This is often done by the manufacturers of industrial machinery 1.2.1 CAD/CAM? • A common part of an integrated system ... respond to the desires and needs of the users In contrast, closed operating systems are developed by a single corporation using static snapshots of market models and profit driven constraints Linux ... 64MB of memory, and GB of disk space On newer computers the performance of the operating system is extremely fast The list below gives some idea of the capabilities, but complete lists of supported...

Ngày tải lên: 22/12/2013, 20:17

... large blocks of data passing over an interconnect network or the simulating of a large time slice of processing on a single processor System events occur in the 10s of microseconds to 10s of milliseconds ... design of embedded hardware-software systems, IEEE Design & Test of Computers, pp 53-67, Spring 1995 [14] DeBardelaben, J and Madisetti, V., Hardware/software codesign for signal processing systems ... usually are not pushed until all software pieces come together In systems in which most hardware is simply commercial-off-the-shelf (COTS) parts, the time and cost of software prototyping and design...

Ngày tải lên: 25/12/2013, 06:16

... function of time A linear time invariant system is described by linear differential equations with constant coefficients A single degree of freedom spring mass viscous damper system is an example of ... INTRODUCTION TO CONTROL SYSTEMS 1.1 INTRODUCTION Control systems in an interdisciplinary field covering many areas of engineering and sciences Control systems exist in many systems of engineering, sciences, ... human body Some type of control systems affects most aspects of our day-to-day activities This chapter presents a brief introduction and overview of control systems Some of the terms commonly...

Ngày tải lên: 01/01/2014, 18:43

... associate professor of Nanyang Technological University, Singapore Qin Wenping received her B.S (1995) and M.S (2001) degrees in College of Electrical & Power Engineering of Taiyuan University of Technology ... his B.Sc degree from Xian Jiaotong University, China, in 1978, the M Sc degree from Taiyuan University of Technology, China, in 1987, and the M Sc and Ph.D degrees from the University of Saskatchewan, ... Costas, Voltage Stability of Electric Power Systems, Boston/London/Dordrecht: Kluwer Academic Publishers, 1998 R Billinton, R N Allan, Reliability Evaluation of Power Systems, 2nd ed., New York...

Ngày tải lên: 03/01/2014, 19:39

... problematic of solving linear systems of interval equations We will then introduce a new formulation of the problem, based on interval parameters which is adapted for the modeling of mechanical systems ... systems, and also evaluate the Interval Computations Applied to FEM amount of computations on simple discrete systems, as well as the accuracy of the solutions RESOLUTION OF INTERVAL LINEAR SYSTEMS ... Validated solutions of linear equations Technical Report 620, Institute of Computer Science, Academy of Sciences of the Czech Republic 22 J Rohn and G Rex, feb 1996 Enclosing solutions of linear equations...

Ngày tải lên: 12/01/2014, 21:45