transactions in measurement and control pdf

... học Kinh tế- Kỹ thuật Công nghiệp) 1.THÔNG TIN CHUNG Tên học phần (tiếng Việt): VI ĐIỀU KHIỂN ỨNG DỤNG TRONG ĐO LƯỜNG VÀ ĐIỀU KHIỂN Tên học phần (tiếng Anh): MICROCONTROLLER APPLICATION IN MEASUREMENT ... Arduino, Thanh niên, 2019 [4] Nguyễn Tất Bảo Thiện, Phạm Quang Huy, Arduino và lập trình IoT = Internet of thing IoT, NXB Thanh niên, 2020 [5] Phạm Quang Huy, Vi điều khiển và ứng dụng - Arduino ... dự lớp học  Sinh viên/học viên có trách nhiệm tham dự đầy đủ các buổi học Trong trường hợp nghỉ học do lý do bất khả kháng thì phải có giấy tờ chứng minh đầy đủ và hợp lý  Sinh viên vắng quá

Ngày tải lên: 10/03/2024, 06:01

... feedback was introduced in Olgac and Holm-Hansen (1994) and Olgac (1995). A single-mass dual-frequency DR absorber was reported in Olgac et al., (1995, 1996) and Olgac (1996). Sacrificing the tuning capability, ... explained in 14.2.1.2, the combined system including a reduced-order (MDOF) model of the primary structure and a DR absorber (Figure 14.2) can be represented in the Laplace domain by the following ... computationally demanding and inefficient. In the following section, an alternative method capable of revealing stability zones directly with less computational effort is explained. 14.2.1.3.2

Ngày tải lên: 27/01/2014, 15:20

... numerous interacting technical and socio-economic processes" including for example, pest and disease control, harvesting, drying, processing, marketing credit and pricing policies and cultural ... 1 AN INTRODUCTION TO MYCOTOXINS WHAT ARE MYCOTOXINS? “Wailing and writhing men collapsed in the ste: others fell over and foamed in epileptic fits ‘whilst some vomited and showed signs of insanity ... with these systems will assist in understanding the aetiology of mycotoxin production, and in formulating appropriate interventions for the control of mycotoxins and myeatonicotes, ‘THE COMMODITY

Ngày tải lên: 17/03/2014, 16:20

... rerouting traffic and upgrading selected links[9]), and accounting (e.g., to support usage based pricing[5]) The standard approach advocated by the Real-Time Flow Measurement (RTFM) [3] Working ... ac-counting, bandwidth provisioning and detecting DoS at-tacks These applications see the traffic as a collection of flows they need to measure As link speeds and the number of flows increase, keeping ... similar, the main advantage of sam-ple and hold being imsam-plementation simplicity, and the main advantage of multistage filters being higher accuracy In contrast to random sampling, the relative

Ngày tải lên: 23/03/2014, 00:20

... misprocessing The value of applying AdvancedProcess Control (APC) for both wafer-to-wafer and within wafer control using in-tegrated metrology and in-situ sensors have been demonstrated in various ... run in open-loop with very little real-time process control utilizing in situsensors In this thesis, in-situ measurement and real-time control is applied to someaspects of lithography including ... processing equipment and placed in the metrology tool,resulting in increased processing steps, time and cost In this chapter, we proposere-an in-situ approach to detect the wafer warpage fault during

Ngày tải lên: 14/09/2015, 12:50

... have been utilized in diverse applications ranging from trains39 and other off-road vehicles40 to military tanks.41 During recent years considerable interest in improving and refining the SA concept ... actual test setting which is optimal by design That is, the peak of FTF isminimized (see thinner line in Figure 12.4) When the primary stiffness and damping increase 5%(for instance, during the operation), ... semi-active damping was done in the 1960s through 1980s35,36 for vibration control of civil structures such as buildings and bridges37 and for reducing machine tool oscillations.38 Since then, SA

Ngày tải lên: 27/01/2014, 15:20

... Press LLC control discipline followed the classical structure design, where the structure and control disciplines were ingredients in a multidisciplinary system design, but no interdisciplinary tools ... selected generalized coordinates and an independent set of the tendon and rod vectors forming l All remaining tendon... Figures 18.6 and 18.9, it follows ˆ that vectors ␳ij and ␳ij can be described ... actuation. Rather, controlled structures will be conceived as an interdisciplinary process in which both material architecture and feedback information architecture will be jointly determined. New paradigms

Ngày tải lên: 18/10/2013, 09:15

... basic instrument in all sound measurements is the sound-level meter It consists of a microphone, a calibrated attenuator, an indicating meter, and weighting networks The meter reading is in terms ... octave-band analyzer is the most common analyzer for industrial noise measurements It separates complex sounds into frequency bands one octave in width, and measures the level in each of the bands ... 24.12 MEASUREMENT OF MACHINE NOISE The noise produced by a machine may be evaluated in various ways, depending on the purpose of the measurement and the environmental conditions at the machine Measurements

Ngày tải lên: 25/10/2013, 13:15

... with obtaining training data 5.4 Conclusion Machine tool monitoring and control provide the bridge between machining research and the production line Nevertheless, despite years of research and the ... constraints are to be tight at the optimum and selecting the machine settings for each process cycle It obtains the machine settings by solving a customized nonlinear programming (NLP) problem, and ... 1996, Intelligent control of machining under modeling uncertainty, CIRP Manufacturing Systems, 25, 1, 73–79. 68 Ivester, R., Danai, K., and Malkin, S., 1997, Cycle time reduction in machining by

Ngày tải lên: 23/01/2014, 06:20

... knowledge-based control in turning, ASME Journal of Dynamic Systems, Measurement, and Control, 115, 122, 1993 40 Landers, R G and Ulsoy, A G., Supervisory machining control: Design approach and ... Mechanical Engineering and Applied... controller during a face milling operation (From Landers, R.G., Supervisory Machining Control: A Design Approach Plus Force Control and Chatter Analysis ... Journal of Engineering for Industry, 115, 37, 1993 26 Kendall, L A., Tool wear and tool life, in Metals Handbook: Machining,... measurements, ASME Journal of Engineering for Industry, 114,

Ngày tải lên: 23/01/2014, 06:20

... Plant or Load: Forming Physics Mechanics of Deformation: Machine Load Dynamics • Mechanics of Forming: Bending, Stretching, and Springback 7.3 Machine Control Sensors 7.4 Machine Control: Force or ... the displacement is increasing or decreasing 7.2.2 Mechanics of Forming: Bending, Stretching, and Springback Because all forming involves curvature change, some type of bending is always present ... into the tool.6 In either case, the strain in the sheet can be used to estimate proximity to failure limits and control the process accordingly 7.3 Machine Control Historically, forming machines

Ngày tải lên: 23/01/2014, 06:20

... 1Assembly and Welding Processes and Their Monitoring and Control 8.1 Assembly Processes Monitoring of KPCs • Monitoring of KCCs 8.2 Monitoring and Control of Resistance Welding Process Monitoring • Control ... 8.3 Monitoring and Control of Arc Welding Processes Modeling for Arc Length Control • Weld Bead Geometry Control • Weld Material Properties • Monitoring of Arc Welding and Laser Welding Assembly ... followed by part joining Part positioning can be accomplished using fixtures or robots Part joining methods include mechanical fasteners, shrink and expansion fits, welding, and adhesives Because

Ngày tải lên: 23/01/2014, 06:20

... offsets and errors (From Dorf, R and Kusiak, A., A D E=Asin( )θ Abbe error ( )µin =[Abbe offset in ( ) ]•[angular error ( )sec]•[4 8 (µin in) ] E=Asin( )θ =[10( )in]• sin[10( )sec]=[10( )in]• sin[10( ... thecritical limiting factors in high speed machining and typically their severity increases nonlinearly withrespect to speed Inertial effects may manifest themselves in several manners including asymmetryabout ... principlesand good metrology are not available to define and quantify the variables causing errors.1 It must be understood that in all cases, machine tool errors that appear random are not random;

Ngày tải lên: 27/01/2014, 15:20

... gains (infinite gain margin). The control concept is represented schematically in Figure 11.9 where the spring-mass system represents an arbitrary structure. Note that the damping introduced in ... Assuming no damping, the equation governing the motion of the structure excited by a single actuator is (11.3) where b is the influence vector of the active strut in the global coordinate ... frequencies, and we define (11.8) The numerator and the denominator of this expression represent, respectively, twice the strain energy in the active strut and twice the total strain energy when

Ngày tải lên: 27/01/2014, 15:20

... FIGURE 13.1 Variable damper and the working principle. FIGURE 13.2 Variable force transfer and the working principle. FIGURE 13.3 Variable spring stiffness and the working principle. 8596Ch13Frame ... degrees-of-freedom, linear kine-matics, linear force laws, mostly using the same models for control design and for evaluation), linear control laws (LQG design procedure and “clipped” optimal strategy), and limited ... LQR control is investigated in Tseng and Hedrick.18 It is really optimal control only for unconstrained semi-active control cases where b min = 0 and b max = ∞ 13.2.3 MOPO Approach Due to the inherent

Ngày tải lên: 27/01/2014, 15:20

... passive control parameters R and L, an optimal control exists with the corresponding minimized cost function, J, and control gains That is, J is a function of R and L Therefore, utilizing a nonlinear ... to determine the system’s active and passive parameters to achieve efficient hybrid vibration control still remains From the driving voltage (control input) standpoint, the circuit inductance ... embedded in the host structure) based on sensor feedback and control commands In response to the applied field, stress/strain will be induced in the piezoelectric material and active control force

Ngày tải lên: 27/01/2014, 15:20

... shown in Figure 16.2 is described by the following PDE: (16.6) with the following boundary conditions:** * The detailed mathematical analysis involved in obtaining the final result can be found in ... setpoint, and denote constant, positive, scalar gains The tension setpoint control law is given by (16.19) where the tension setpoint error is defined as denote positive scalar control gains After ... tension and speed setpoint regulating boundary controller for an axially moving web system Finally, we present a model-based boundary controller that regulates the angular position of a flexible-link

Ngày tải lên: 27/01/2014, 15:20

... example, in the analysis ofthe planar tensegrity structure, the slackening of a string results in dramatic nonlinear changes inthe bending rigidity Increasing the pretension allows for greater bending ... conclusions and future work The appendices explainnonlinear and linear analysis of planar tensegrity Trang 1317.2 Planar Tensegrity Structures Efficient in BendingIn this section, we examine the bending ... role in preventing the string from going slack which, in turn, increases the range of the constant EI against external loading This provides robustness of EI predictions against uncertain external

Ngày tải lên: 27/01/2014, 15:20

... erosion, and internal scale build up. In spite of its high ini- tial cost, the total cost of owner- ship can still be favorable because of savings in installation and operat- ing and maintenance ... air speed in rac- ing cars and Air Force fighter jets. In industrial applications, pitot tubes are used to measure air flow in pipes, ducts, and stacks, and liquid flow in pipes, weirs, and open ... and liners are available in many materials and are widely used in all the process indus- tries, including food, pharmaceutical, mining, and metals. Some liner materials (particularly Teflonđ) can...

Ngày tải lên: 20/10/2013, 01:15

... repeatedly. There are two distinct types of control systems in a typical automated manufacturing system: continuous control and discrete event control. Continuous control systems regulate continuous variables ... the machine level as well as the coordination between machines (including material handling). The discrete event controller is also responsible for machine services, such as lubrication and coolant. Both ... the control system cannot be tested until all of the machinery is in place in the factory setting. Simulation of the control system combined with the mechanical machine is becoming more common in...

Ngày tải lên: 23/01/2014, 06:20