Process Control Systems Episode 13 docx

... 182 Pairing Controlled and Manipulated Variables 188 Decoupling Control Systems 198 Summary 202 References 202 Problems 203 8. Feedforward Control 204 The Control System as a Model of the Process 206’ Applying ... 228 Problems 228 APPLICATIONS 9. Control of Energy Transfer 233 Heat Transfer 23.4 Combustion Control 241 Steam-plant Control Systems 243 Pumps and Compresso...

Ngày tải lên: 01/04/2014, 11:09

... receding horizon optimal flight controller, Proceedings of the American Control Conference, Seattle, Washington. 116 Advances in Flight Control Systems Design of Intelligent Fault-Tolerant Flight ... München. Intelligent Flight Control: Advanced Concept Program (1999). Final Report BOEING-STL 99P0040, The Boeing Company. 114 Advances in Flight Control Systems Jategao...

Ngày tải lên: 19/06/2014, 23:20

... channel (PI for Advances in Flight Control Systems 178 unchecked, the aircraft specific uncertainty in the rigid body rotational dynamics would leak into the point mass kinematics via the ... while performing a right turn & localizer intercept runaway with classic technique (dotted line), DAMF (solid line) and DAMF+CA (dashed line) Advances in Flight Control...

Ngày tải lên: 19/06/2014, 23:20

... has the following form: B b = ⎡ ⎣ cos θ cosψ cos θ sinψ −sin θ −cos φ sinψ + sin φsin θ cosψ cos φ cosψ + sin φsin θ sinψ sin φ cosθ sin φ sinψ + cos φsin θ cosψ −sin φ cosψ + cos φsin θ cosψ cos ... even after using the outer-loop controller. The semi-linearized UAV model, presented in (7) can be controlled in separate parts: the linear part in the inner-loop and the nonlinear part...

Ngày tải lên: 19/06/2014, 23:20

... Such monostatic Advanced Microwave Circuits and Systems3 78 Fig. 18. Measurement kit: a panel SMA connector, a measurement probe, open, short and matched (50 Ω) load calibration standards SMA connectors ... Some materials were measured and where possible the comparison between measurement (modeling) and values from tables was carried out. Advanced Microwave Circuits and Systems3 54...

Ngày tải lên: 21/06/2014, 06:20

... Advances in Measurement Systems5 10 Advances in Measurement Systems4 88 Ferrari, P., Flammini, A., Marioli, D., Sisinni, E. and Taroni, A. (2003), Sensor integration in Industrial Environment: ... Undamped inter-area frequency oscillations in both systems during synchronization in March 09 2004. Fig. 3. Undamped inter-area voltage oscillations in both systems during s...

Ngày tải lên: 21/06/2014, 06:20

... gain at 70 = 2. 5~~ be 1.0: G(+!!=lO 1 2 P . Substituting for the dynamic gains of ~~ and 72, Substituting 2. 5~~ for TV, 2. 5 ~2 2. 5 ~2 P = 100 ~ ~ 2TTl 2lrr2 r=1s; (1 .25 ) This is the ... Fig. 2. 1. As a 40 1 Understanding Feedback Control Since 72 = 2, n2 + n 4 +2 3 zz-= 2 2 and 3: = (2. 618)(0.3 82) = 1.00 With three capacities of time constant 7, T...

Ngày tải lên: 12/08/2014, 16:21

... 0 125 -36 P 127r&, 158 220 361 llOTd/T, 127 196 22%,/T, 2 54 540 Process 70 Gain 4. OOsd 0.64rd/r, 4. 80 0.76 6.00 0.95 8.00 1.27 -__ 3.197d 0.517&1 4. 00 0. 64 5.37 0.86 2.867d 0 .45 rJn 4. 00 0. 64 6.79 1.08 Perform- ance, PR/100 m 4 .52sd2/rl 3.65 4. 58 0.9772/71 0.81 0.96 2. ... 0.86 Interacting three-mode _- ? 1 , D 0 0 0 0 __- 0,907d 0. 64 0. 54 ,Controller R...

Ngày tải lên: 12/08/2014, 16:21

... prime variable. Secondary Controller Primary controller FIG 6. 1. Cascade control resolves the process into two parts, each within a closed loop. 1 56 1 Multiple-loop Systems The vector gain of ... constant gain for the primary loop. RATIO CONTROL SYSTEMS In a ratio control system, the true controlled variable is the ratio K of two measured variables X and Y: K=; (6. 3) Contr...

Ngày tải lên: 12/08/2014, 16:21

... its control systems ought never to interfere with this aspiration. Multivariable Process Control I 1 97 FIG 7. 7. The effect of m2 on cl de- pends on the ratio of their periods. Equation (7. 20) ... expanded in Chap. 7, Multivariable Process Control. But the deepest penetration into the 194 1 Multiple-loop Systems component blending system be as follows: am -I- bm (...

Ngày tải lên: 12/08/2014, 16:21

... Manipulated variable - c * Process Controlled variable * I I FIG 8. 1. The control system embodies a for- ward flow of information. Feedforward Control I 223 MzY FIG 8. 17. The complete control system for ... Appara- tus, British Patent No. 86 0, 485 , February 8, 1961. 3. MacMullan, E. C., and F. G. Shinskey: Feedforward Analog Computer Control of a Superfractionator, Cont...

Ngày tải lên: 12/08/2014, 16:21

... WCCC/WHCH) (9. 11) (9. 12) To envision what effect flow rates have upon exit temperature, Eg. (9. 11) is plot’ted in Fig. 9. 4 with the same abscissa and parameter that were used in Fig. 9. 3. FIG 9. 4. ... with Eq. (9. 11) yields: THI - THZ 1 THI - TCI = CH/AkH -k 96 ãk ( WHCH/WCCC)(CC/A~C -k 35) (9. 13) A plot of Eq. (9. 13) for conditions of CH/AkH = Cc/Akc = 1 is given...

Ngày tải lên: 12/08/2014, 16:21

... balance: V(1 - y) = F(l - 2) (12. 7) The combination of Eqs. (12. 5) through (12. 7) permit’s solution for the value of the manipulated variable L required to control either y or 2, the other ... -Y) (12. 8) n’otice the resemblance of Eq. (12. 8) to t’he feedforward control equat’ion for binary distillation. As in distillation, there is a relationship between y and Z, of...

Ngày tải lên: 12/08/2014, 16:21

... 124 on-off, 131 with differential gap, 132 in dual-mode systems, 137 -141 limit cycle due to, 131 with proportional time, 133 , 134 with reset and derivative, 135 three-state, 134 , 135 peak-seeking, ... 278 discontinuous, 149 for pH control, 279 dual-mode, 136 -144 on-off, 131 with differential gap, 132 proportional time, 133 , 134 three-state, 134 , 135 Nonlinear...

Ngày tải lên: 12/08/2014, 16:21