This paper proposes software architecture about conception and reconfiguration for the control of complex systems. This approach is based on a component description model. This model empowers the design of a system as a hierarchic composition of components. Dynamic insertions and removes of components in the system are also allowed. With this architecture, each component can be described with uncertainty. Thus, in the case of faulty behavior, a fuzzy evaluation of the system reconfigurability seems appropriate. To illustrate this analysis and this description, an example of the reconfiguration of a trajectory tracking is proposed.