Tài liệu Process Dynamics, Operations, and Control pptx

... Spring 2006 Process Dynamics, Operations, and Control 10.450 Lesson 5: Heated Tank • the controller output (between 0 and 100%) specifies the position of the valve stem (between closed and open). ... speed the decay and thus reduce both the revised 2006 Mar 31 29 Spring 2006 Process Dynamics, Operations, and Control 10.450 Lesson 5: Heated Tank amplitude...

Ngày tải lên: 16/02/2014, 19:20

... by substitution into the differential equation and, as expected, are found to be -2 and respectively. Then x(t) = -2 + + + + and the constants and are determined by the three initial conditions. The ... transform.* 3. The transform is linear. In mathematical notation, means: + = + where a and b are constants, and f and two functions of Proof. Using the definition, + = + I...

Ngày tải lên: 22/12/2013, 21:18

... Applications 18 Advanced Control Strategies 249 19 Controller Tuning and Process Identification 282 20 Control Valves 303 21 Theoretical Analysis of Complex Processes 318 . Part VI Sampled-Data Control Systems 22 Sampling ... and Fourier series in Chap. 33. Analog computation and pneumatic controllers in the first edition have been replaced by digital computation and microproc...

Ngày tải lên: 22/12/2013, 21:18

... cables or fiber optic strands. All these media have their band limitation, copper have the lowest. So we need lots of links and this is again impractical in terms of costs and some time impossible ... maintenance and is less flexible than TDM. • The FDM schemes used around the world are to some degree standardized. • Group - 12 voice channels multiplexed together (12x4 kHz = 48 kHz...

Ngày tải lên: 10/12/2013, 08:15

... 2 Determine the process ID of the current inetd process. Step 3 Use the kill -HUP process_ id command to kill the process. The process will restart automatically. Step 4 Use the dd command to create ... address, server, and file commands, and then enter the tftp command to start the download. The commands are as follows: a. If needed, use a question mark ( ? ) or enter the help co...

Ngày tải lên: 11/12/2013, 13:15

... between R1 and R4. - Use RIP routing on the Ethernet segment between R4 and R2, and on the serial circuit between R4 and the Term Serv. - Use NLSP routing on the serial circuit between R1 and R2 4. ... detail" command to see if you are able to send and receive traffic without errors and check that you can see your EIGRP neighbor across the circuit. 2. Just enable EIGRP on...

Ngày tải lên: 11/12/2013, 14:15

... chỉ vì chuyện bao bì đóng gói. The Hale and Hearty colours are not auspicious in our culture. Theo văn hóa của chúng tôi, những màu sắc công ty Hale and Hearty đang dùng không phải là những ... thể hiểu được rất nhìều mà còn nói được nhiều câu tương tự đến như thế. Lesson 21: Complaints and Crises Bài 21: Than phiền và Sự cố Trong bài 21 này, bạn sẽ tìm hiểu xem phải xử trí như...

Ngày tải lên: 11/12/2013, 16:16

... B., Instrumentation and Control of Nuclear Reactors, ILIFFE Books Ltd., London. Wightman, E.J., Instrumentation in Process Control, CRC Press, Cleveland, Ohio. Rhodes, T.J. and Carroll, G.C., ... functions: indication, alarm, and control. The temperatures monitored may normally be displayed in a central location, such as a control room, and may have audible and visual alarms...

Ngày tải lên: 13/12/2013, 01:15

... transform of the imaginary odd function is real and odd. Let and refer to real and imaginary, and to even and odd, and lower-case and upper-case letters to time and frequency functions. A summary of the ... real and imaginary parts are plotted on the - and -axes, and time runs down the axis of the screw. The complex conjugate of this signal reverses the -axis and gives...

Ngày tải lên: 17/12/2013, 06:15

... focus on basic chemistry and physics concepts. Your child will learn and use general laboratory skills for scientific investigations and problem solving, as individuals and as teams. It is an ... Lab make-up days will be on Tuesday and Thursday mornings before school. Daily assignments and worksheets are posted in the classroom and on the internet and are available to al...

Ngày tải lên: 20/12/2013, 23:15