Based on the design of proportional and derivative (PD) observers, a new parametrization of
all observers for descriptor systems is developed. Without using any additional
transformations, the present observer parametrization is convenient and efficient to be
performed. The connections between the proposed parametrization and the known results
are established. For descriptor systems with bounded input disturbances, the estimation
error dynamics are parametrized with respect to the disturbance vectors. An example is …

Based on the design of proportional and derivative (PD) observers, a new parameterization
of all observers for descriptor systems is developed. Without using any additional
transformations, the present observer parameterization is convenient and efficient to be
performed. The connections between the proposed parameterization and the known ones
are established. For descriptor systems with bounded input disturbances, the estimation
error dynamics are parameterized with respect to the disturbance vectors. An example is …