Vibration Control Part 11 doc

... control laws for multi-modal control. As introduced above several switch control laws have been developed for multi-mode vibration control using switched shunt circuit, but more efficient control ... parametric control approach for structural vibration suppression via semi-active piezoelectric networks. Transaction of ASME, Journal Vibration and Acoustics, Vol. 115 , 505...

Ngày tải lên: 20/06/2014, 12:20

... basis for controller synthesis. 2.2 Optimal control problem formulation The desired controller must stabilize vertical velocity of the plasma current centroid. One of the approaches to control ... setting the trade-off between controller’s performance and control energy costs. Specifically, in order to find an optimal controller, LQG-synthesis can be performed. Such a controller has high...

Ngày tải lên: 20/06/2014, 11:20

... is possible to write the energy balance over a time period [t 1 ; t 1 + τ ] as: 11 111 111 11 222 11 , 22 tt ttt E ttt tt M uCudtKu Fudt Vudt ττ τττ α ++ +++ ⎡⎤ ⎡⎤ ++ =− ⎣⎦ ⎣⎦ ∫∫∫   ... 2 2 0 41 41 1 11 SSSC D D KK K k C αγ γ ββ πγ πγ ⎛⎞ ++ =+ = + ⎜⎟ ⎜⎟ − ⎛⎞ ⎜⎟ ⎝ − ⎠ ⎠ ⎝ (55) Vibration Control 266 Therefore, the development of effective techniques for vibration...

Ngày tải lên: 20/06/2014, 12:20

... active vibration control of rotorbearing systems using piezoelectric actuators, Journal of Vibration and Acoustics, Vol. 115 , 111 -119 . ISSN: 1048-9002. Rao, S. S. (2004). Mechanical Vibration. ... Response [m/m] Active Vibration Control Fig. 4. Rotor vibration amplitude response using active vibration control (solid line) First of all, the speed trajectory planning...

Ngày tải lên: 20/06/2014, 12:20

... that the standard deviations are attenuated 11dB (70%) by μ controller, but the random disturbance is magnified to 132% by PI controller. Vibration Control 354 0 0.2 0.4 0.6 0.8 1 1.2 1.4 ... of H ∞ controller is 10, and 12 of μ controller. Square root balanced model truncation, is used to reduce the order of controllers. Fig.9 shows the Bode diagrams for 6th order H ∞ con...

Ngày tải lên: 20/06/2014, 12:20

... basis for controller synthesis. 2.2 Optimal control problem formulation The desired controller must stabilize vertical velocity of the plasma current centroid. One of the approaches to control ... setting the trade-off between controller’s performance and control energy costs. Specifically, in order to find an optimal controller, LQG-synthesis can be performed. Such a controller has high...

Ngày tải lên: 21/06/2014, 03:20

... Here again, the performances of controller (97) and the proposed control (95) are compared. The gains of the controllers are chosen as in Table 2. The additional control parameters for NP friction ... Adaptive Control 246 Figure 3. Simulation results: Tracking errors of joints (left) and characteristics of control inputs (right), (a): Traditional LP adaptive controller (97),...

Ngày tải lên: 21/06/2014, 19:20

... matrix (48), we have  M 11 M 12 M 21 M 22  T 11 A M T 11 B M C M 0  =  T 11 T 12 T 21 T 22  . Obviously, T 11 is the solution to the linear matrix equation T 11 = M 11 T 11 A M + M 12 C M , ... devoted to develop PID controller, PID controllers are not robust to the parameter variation to the plants being controlled. Figure 4 shows the use of PID controller controls th...

Ngày tải lên: 20/06/2014, 04:20

... structural control robustness. Structural Safety, Vol. 15, No. 2, 111 –129 Tanaka, K.; Ikeda, T. & Wang, H. O. (1996). Robust stabilization of a class of uncertain nonlinear systems via fuzzy control: ... Reliability-based control design for uncertain systems. Journal of Guidance, Control, and Dynamics, Vol. 28, No. 4, 649-658 Feng, G.; Cao, S. G.; Kees, N. W. & Chak, C. K...

Ngày tải lên: 20/06/2014, 04:20

... constitutive relations for the strain S 11 and electric displacement D 3 , as functions stress T 11 and electric field E 3 , take the form: 11 11 31 11 3 31 33 3 S s d T D d ε E     ... criteria have been drawn here to optimize modal controllability and observability of the system, which is particularly interesting when considering control of flexible structures. More...

Ngày tải lên: 21/06/2014, 11:20