(1) For a large amount of thrusters like those in a highly integrated SPMA, the energy consumption of the thrusters is influenced by multiple factors such as the installation mode of SPMA, the ignition combinations, the unit impulse, and the precision control.
The corresponding thruster-generated triaxial component of the unit impulse is expressed as [e.sub.ij] = [[e.sub.ijx,], [e.sub.ijy], [e.sub.ijz]].sup.T].
Furthermore, according to (13) and the definition of matrix A, it can be seen that the AECF is influenced by three indexes: the number of working thrusters, the ignition combinations, and the unit impulse of thrusters in SPMA.
Campos completes his trilogy on the theory of functions by considering generalized functions such as the Heaviside unit jump, Dirac unit impulse
, and its derivatives of all orders.
The Determination of Unit Impulse Response Function h(t).
where [delta](t) is the unit impulse function to determine the corresponding unit impulse response function.
That is, the unit impulse response function h(f) of the system is
This problem is to be solved in each iteration and for each unit impulse of the movements of beams [r.sub.s].
Let [E.sub.ij] be successively given as unit impulses, i.e.
This is a problem of optimal shape of structures and can be formulated for composites as follows: Let the uniform strain fields [E.sub.kl] (components of unit impulses of the overall strain tensor) are applied in the domain [OMEGA] (in our case successively the unit displacements are applied along the boundary of the unit cell, see Figs.
where [GAMMA]([[omega].sub.0]t) is the phase impulse sensitivity function (P-ISF) which is a dimensionless, frequency- and amplitude independent periodic function and describes the phase deviations for a unit impulse input at time [tau].
where [LAMBDA]([[omega].sub.0]t) is the amplitude impulse sensitivity function (A-ISF) which is a periodic function and describes the amplitude deviations for a unit impulse input at time [tau].