crc press - the communications facility design handbook

... © 2000 by CRC PRESS LLC Medium-Frequency Radio (20 kHz to 2 MHz) The low-frequency portion of the band is used for around -the- clock communication services over moderately ... capacitance between the wires of the coil, which causes the coil to have a self-resonance between the winding capacitance and the self-inductance of the coil. Circuits ar...

Ngày tải lên: 03/07/2014, 22:55

... in the early design steps. At any stage the use of more complex models is possible for evaluating the performance or more advanced design strategies. If the design methods allow, design- by-simulation ... 2002 by CRC Press LLC on co-simulation (see Veitl et al. 15 ). A brief list includes ADAMS, SIMPACK, MATLAB-SIMU- LINK MATRIXx-SystemBuild. 13.2.1.2 Design Model...

Ngày tải lên: 21/06/2014, 21:20

... 1.9 1.95 2 10 -4 10 -3 10 -2 10 -1 10 0 10 1 Length L Stiffness K (k v ) δ 0 = 8° δ 0 = 11° δ 0 = 14° δ 0 = 17° -0 .4 -0 .2 0 0.2 0.4 0.6 0.8 1 1.2 1.4 10 -4 10 -3 10 -2 10 -1 10 0 10 1 Force ... shows how to design the C4T1 i structure to minimize the use of mass by replacing the bar with the C4T1 i structure such that the stiffness of...

Ngày tải lên: 21/06/2014, 21:20

... the y-direction. The effect of the prestress on the bending stiffness is also shown in Figures 17.53 and 17.54. The following conclusions about the bending characteristics of the two-stage 3-bar ... satisfying the existence condition for the two-stage 3-bar SVD-type tensegrity studied here. It is interesting to explore the factors defining the boundaries of the domain o...

Ngày tải lên: 21/06/2014, 21:20

... deformations -two deformatio -one dynamic mode -two deformations -two deformatio -one dynamic mode -one deformation elastic surface: -no dynamic mode -one deformation rigid surface -no dynamic mode -no ... m k is the link mass. The moment of the couple can be expressed in Euler’s form (20.45) where is the tensor of inertia. Couple (20.45) is expressed in the link-fixed frame and t...

Ngày tải lên: 21/06/2014, 21:20

... fixed in the given positions . The moment of inertia of the mechanism about the axis of the i-th joint depends on the angles (positions) at which the joints behind the i-th joint in the kinematic ... (23.2) where is the output angle of the motor shaft after-reducer; is the gear ratio; is the inertia of the motor actuator; is the viscous friction coefficient; is t...

Ngày tải lên: 21/06/2014, 21:20