Xem 1-20 trên 126 kết quả Automatic control
  • This section describes heating, ventilating, and air conditioning (HVAC) systems and discusses characteristics and components of automatic control systems. Cross-references are made to sections that provide more detailed information. A correctly designed HVAC control system can provide a comfortable environment for occupants, optimize energy cost and consumption, improve employee productivity, facilitate efficient manufacturing, control smoke in the event of a fire, and support the operation of computer and telecommunications equipment....

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  • The purpose of this manual is to provide the reader with a fundamental understanding of controls and how they are applied to the many parts of heating, ventilating, and air conditioning systems in commercial buildings. Many aspects of control are presented including air handling units, terminal units, chillers, boilers, building airflow, water and steam distribution systems, smoke management, and indoor air quality.

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  • Section 16: Instruments and controls includes Instruments by Otto Muller-Girard (Counting Events, Time and Frequency Measurement, Mass and Weight Measurement, Measurement of Linear and Angular Displacement,...); automatic controls by Gregory V. Murphy; surveying by W. David Teter.

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  • The mechatronic servo system is the major theme studied in this book. In particular, the servo system adopted in an electric servo motor is explained in this chapter. Several items of its utilization from the development stage to the present as well as its performances. The so-called mechanism machine (called as mechatronic servo system at the following), i.e.

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  • The purpose of this manual is to provide the reader with a fundamental understanding of controls and how they are applied to the many parts of heating, ventilating, and air conditioning systems in commercial buildings. Many aspects of control are presented including air handling units, terminal units, chillers, boilers, building airflow, water and steam distribution systems, smoke management, and indoor air quality. Control fundamentals, theory, and types of controls provide background for application of controls to heating, ventilating, and air conditioning systems. ...

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  • Most research in robotics centers on the control and equations of motion for multiple link and multiple degree-of-freedom armed, legged, or propelled systems. A great amount of effort is expended to plot exacting paths for systems built from commercially available motors and motor controllers. Deficiencies in component and subsystem performance are often undetected until the device is well past the initial design stage.

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  • Bài giảng "Hệ thống thông tin công nghiệp - Chương 4: Automatic Control" cung cấp cho sinh viên các kiến thức: hat Automatic Control is, Automatic Control Theory, Process Control, Controllers. Hi vọng đây sẽ là một tài liệu tham khảo hữu ích dành cho các bạn sinh viên công nghệ thông tin và những ai quan tâm dùng làm tài liệu học tập và nghiên cứu.

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  • Integrating statistics and dynamics within a single volume, the book will support the study of engineering mechanics throughout an undergraduate course. The theory of two- and three-dimensional dynamics of particles and rigid bodies, leading to Euler's equations, is developed. The vibration of one- and two-degree-of-freedom systems and an introduction to automatic control, now including frequency response methods, are covered.

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  • This manual describes configuration steps to be taken for implementation of Kerio Control in a model network. This network includes most elements present in a real-life Kerio Control network — Internet access from the local network, protection against attacks from the Internet, access to selected services on the LAN from the Internet, user access control, automatic configuration of clients on the LAN, user authentication in the Active Directory domain, user browsing behavior control, etc.

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  • Knowing that the plant parameters can vary within their lower and upper bounds, this parametric uncertainty is formulated as an additive perturbation in the transfer function matrix. It is important to note that the controller be designed with respect to worst case uncertainty for each λij. This can be achieved by performing an optimization procedure given by (61) for 200 frequencies. Here an element by element uncertainty bound model is used for the characterization of upper bound of the uncertainty matrix. Then wij , which satisfies (62) for each λij is given in matrix form as,...

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  • The control system for a star delta contactor is sequence circuit. The star contactor and delta contactor are interlocked relative to each other with a ‘either - or’ condition. Switching from ‘star’ to ‘delta’ is done automatically by means of a time relay. In the circuit above, the star contactor is energised first, then the mains contactor. Circuits in which the mains contactor is energised first, followed by the star contactor, are also common.

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  • HVAC systems are sized to satisfy a set of design conditions, which are selected to generate a maximum load. Because these design conditions prevail during only a few hours each year, the HVAC equipment must operate most of the time at less than rated capacity. The function of the control system is to adjust the equipment capacity to match the load.

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  • The history of flight control is inseparably linked to the history of aviation itself. Since the early days, the concept of automatic flight control systems has evolved from mechanical control systems to highly advanced automatic fly-by-wire flight control systems which can be found nowadays in military jets and civil airliners. Even today, many research efforts are made for the further development of these flight control systems in various aspects.

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  • Automatic process control is concerned with maintaining process variables, temperatures, pressures, flows, compositions, and the like, at a desired operating value. As we shall see in the ensuing pages, processes are dynamic in nature. Changes are always occurring, and if actions are not taken, the important process variables— those related to safety, product quality, and production rates—will not achieve design conditions.

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  • Written by two of the most respected, experienced and well-known researchers and developers in the field (e.g., Kiencke worked at Bosch where he helped develop anti-breaking system and engine control; Nielsen has lead joint research projects with Scania AB, Mecel AB, Saab Automobile AB, Volvo AB, Fiat GM Powertrain AB, and DaimlerChrysler.

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  • Patterns Model – View – Controller defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically. Design Patterns Model – View – Controller provides about history, observer pattern, observer class diagram, transactions happen, observer rocks, architecture diagram, advantages, problems.

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  • Automatic Water Supply and Drainage Control Ideal for level control of any conductive liquid. Both general-purpose and panel-use models available. Incorporates an arrester for surge and induced lightning protection. Wide range of models: Long-distance, high- and low-sensitivity, two-wire, etc. LED indicator for quick operation check.

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  • [ Team LiB ] Controlling How Outlook Opens Use the following switches to control how you start Outlook, including switches that enable you to disable the Navigation Pane or reading pane. You can also use switches to select a specific profile when Outlook loads, disable Outlook's capability to check whether it's the default mail client, and disable an automatic mail check. Additional startup switches are discussed in the "Diagnostic Switches" section, including /Safe switches and switches used to clean special items, such as reminders or rules. ...

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  • Change Automatic Download Settings There are two areas where you can change the settings that control the download of external content

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  • In spite of all the advances in control over the past 50 years the PID controller is still the most common controller, see [1]. Even if more sophisticated control laws are used it is common practice to have an hierarchical structure with PID control at the lowest level, see [2–5]. A survey of more than 11,000 controllers in the refining, chemicals, and pulp and paper industries showed that 97% of regulatory controllers had the PID structure, see [5]. Embedded systems are also a growing area of PID control, see [6].

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