Temperature control

Tham khảo sách 'siemens - simatic pid temperature control', kỹ thuật - công nghệ, tự động hoá phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

102p trinh02 23-01-2013 57 19   Download

This paper proposes a new control strategy for improving the performance of the superheated steam temperature control system in thermal power plants. Based on the analysis of the limitations of the static feedforward compensators (SFC) for temperature and boiler load disturbances in the existing control system of the auxiliary boiler in Dung Quat refinery, two adaptive dynamic feedforward compensators (ADFC) for temperature and boiler load disturbances were proposed to replace the SFCs.

10p cumeo2009 30-07-2018 1 0   Download

This manual supports you when you work with the temperature controller block from the Standard Library PID Control. It will familiarize you with the functions of the controller blocks and, in particular, with tuning the controller and working with the user interface in which you set the parameters for the blocks. There is an online help system for both the blocks and the user interface that supports you when setting the parameters of the blocks. This manual is intended for qualified personnel involved in programming, configuration, commissioning, and servicing of programmable controllers.

42p trinh02 23-01-2013 69 17   Download

For simple applications, switching devices such as contactors or solid-state relays can be used to control electrical power. The electrical power in a process can be regulated by varying the ON and OFF times of these devices. But in many processes this provision of energy in large blocks will cause significant variations in the process output. As an example, it would not be possible to control lighting levels simply by using such two-state on/off switching elements. Neither could good temperature controllers be implemented in this way...

44p beobobeo 01-08-2012 45 8   Download

(BQ) Part 2 book "Heat-Transfer calculations" has contents: Heat-Transfer-Coefficient determination; tubes, pipes, and ducts; heat exchangers; fluidized beds; parameter and boundary estimation; temperature control; thermal analysis and design; economic optimization.

432p bautroibinhyen19 24-02-2017 8 4   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Copper Selenide Nanosnakes: Bovine Serum Albumin-Assisted Room Temperature Controllable Synthesis and Characterization

8p sting07 17-02-2012 32 2   Download

This is documented on its ENC inverter, inverter EDS currently uses quite a lot because of its low cost and ease of installation are full of style and function that controls the inverter reputation has, howeverreliability is not very high.

149p hungcoi312 23-06-2010 470 346   Download

Process plants consist of hundreds, or even thousands, of control loops all networked together to produce a product to be offered for sale. Each of these control loops is designed to keep some important process variable such as pressure, flow, level, temperature, etc. within a required operating range to ensure the quality of the end product. Each of these loops receives and internally creates disturbances that detrimentally affect the process variable, and interaction from other loops in the network provides disturbances that influence the process variable....

297p trinhvang 18-01-2013 66 32   Download

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.

227p nhatkyvodanh 11-08-2012 66 22   Download

This subcourse is designed to provide instruction on the concept and operation of the basic components of the hydraulic system. It also describes the various components of a typical hydraulic system, their construction and functions, and their relationship to each other. When the term hydraulics is applied to aircraft, it means a method of transmitting power from one location to another through the use of a confined fluid.

67p chipmoon 19-07-2012 69 15   Download

Just as human operators must be protected from extreme environments, so must the electronics that operate and control a functional system. When the environment proves too warm, the electronics must be insulated, refrigerated, or simply moved to cooler locations. This last option is sometimes very difficult, or impossible, and the perceived fragility of electronics must then be reconsidered. Vacuum-tube technology provides a historical example of this process.

136p thix1minh 16-10-2012 27 6   Download

(BQ) Part 1 book "Fundamentals of industrial instrumentation and process control" has contents: Introduction and review, basic electrical components, AC electricity, electronics, pressure, level, flow, temperature and heat.

154p bautroibinhyen21 14-03-2017 9 3   Download

This new science seeks to emphasize the immediate duty of man to better his conditions by availing himself of knowledge already at hand. As far as in him lies he must make application of this knowledge to secure his greatest efficiency under conditions which he can create or under such existing conditions as he may not be able wholly to control, but such as he may modify. The knowledge of the causes of disease tends only to depress the average citizen rather than to arouse him to combat it. Hope of success will urge him forward, and it is the duty of lovers of mankind...

65p hotmoingay9 02-02-2013 25 2   Download

This article presents a method of the error reducing control in SLS machine. When using SLS machine, there are many factors that cause the errors such as: temperature, trajectory, velocity and laser intensity. Therefore, we need to have a precise method control in order to have an accurate processing sample.

7p sansan2 26-05-2018 2 1   Download

Trong hệ thống điều khiển tự động EATC (Electronic Automatic Temperature Control) có trang bị bộ vi xử lý để giúp hệ thống duy trì được nhiệt độ mát lạnh định sẵn một cách ổn định. Đồng thời có thể điều khiển được nhiệt độ ở phía ghế tài xế và khu vực ghế hành khách một cách độc lập.

4p haidaioto 08-10-2013 623 248   Download

Solar energy, light and heat radiation from the Sun, has been exploited by humans since ancient times using a variety of technology development than ever before. Solar radiation along with secondary resources of energy like wind and solar energy, water power and biomass, make the most of renewable energy available on earth. Only a tiny fraction of the available solar energy is used.

202p minhhai20789 26-04-2011 210 114   Download

This subcourse is designed to provide instruction on the concept and operation of the basic components of the hydraulic system. It also describes the various components of a typical hydraulic system, their construction and functions, and their relationship to each other.

67p protable 26-02-2010 207 83   Download

Long-time protection: The long-time protection function protects cables (phases and neutral) against overloads. This function is based on true rms measurements. Thermal memory: The thermal memory continuously accounts for the amount of heat in the cables, both before and after tripping, whatever the value of the current (presence of an overload or not). The thermal memory optimises the long-time protection function of the circuit breaker by taking into account the temperature rise in the cables. The thermal memory assumes a cable cooling time of approximately 15 minutes....

31p nmtinh 10-11-2010 241 66   Download

This text is aimed at technicians, hobbyists, and students and provides complete circuit diagrams and building instructions for a wide range of creative sleuthing applications. The designs are fully tested and proven effective in real-world alarm, sensor, and security equipment. Among the circuits highlighted are a multi-purpose high-gain amplifier, temperature and pressure sensors, vibration and pyroelectric sensors, smoke and toxic gas detectors, tachometer/speed gauges, a remote video and control system, door and window alarms, motion and impact detectors and tone signalling sensors.

296p ndkhuong177 20-06-2012 161 64   Download

Temperature measurement and control are vital in many industrial processes. Accurate control of the temperature is essential in nearly all chemical processes. In some applications, an accuracy of around 5-10~ may be acceptable. There are also some industrial applications which require better than 4-1 ~ accuracy.

233p cusonson 21-01-2010 124 54   Download