Abstract The High Redundancy Actuator (HRA) deals with the intrinsic fault-tolerance
actuation by having a large number of small actuation elements coupled in series and …

This paper presents the modelling of a moving coil actuator for use as an element in a High
Redundancy Actuator (HRA). A single element model is derived from first principles and …

A high redundancy actuator, comprising a relatively large number of actuation elements, is
being developed for safety critical applications. Some classical control results have …

The high redundancy actuator (HRA) concept is a novel approach to fault tolerant actuation
that uses a high number of small actuation elements, assembled in series and parallel in …

A high redundancy actuator (HRA) is composed of a high number of actuation elements,
increasing both the travel and the force over the power of an individual element. This …

In order to reduce or eliminate the force-fight phenomenon of single feedback loop of
redundant-channels, modelling the whole control system on the basis of analysing the …

A high-redundancy actuator (HRA) is an actuation system composed of a high number of
actuation elements, increasing both travel and force above the capability of an individual …

The High Redundancy Actuator project deals with the construction of an actuator from many
redundant actuation elements. Whilst this promises a high degree of fault tolerance, the high …

A high redundancy actuator (HRA) is composed of a high number of actuation elements,
increasing both the travel and the force above the capability of an individual element. This …

The High Redundancy Actuator (HRA) project investigates the use of a relatively high
number of small actuation elements, assembled in series and parallel in order to form a …