where Tb and Tn
m are the kinetic energy for the suspended
platform and n-th link of the manipulator, ‘‘’’
is the inner product operator. The mass and the
moment of inertia of the platform and n-th link are
represented by Mb, Mn
m and Ib,In
m, respectively.
The potential energy is divided into three parts, as
shown in equation (32). Using the geometric vectors
presented in Figure 11, it can be written as