Systems of control and monitoring for electromechanical actuators


The development of a Health Monitoring system for an electromechanical actuator.


The early detection of faults: the development of algorithms for the early detection of faults based on simulation models and on technologies from AI (Artificial Intelligence); adaptation and deployment of a test bench (previously employed for hydraulic drive systems) for testing and monitoring electromechanical actuators; design and development of the control electronics for the system, integrated and with the capacity to be handled remotely in order to undertake monitoring activities. 

Systems of control and monitoring for electromechanical actuators

The development and implementation of advanced drive systems have increased in recent years, due to the enhanced performances that the changeover from hydraulic actuators to electromechanical ones (EMAs).

Many aspects have to be taken into account in relation to the development of these systems. Not only is it important in themselves, but also the additional functions that can be provided to the system in order to be more competitive in today’s market. This is the case of Health Monitoring Systems.

The development, implementation and incorporation of monitoring algorithms for the state of health of EMA environments provides the system with extra functions for detecting faults at an early stage, thus obviating accidents or programming corrective maintenance actions.

IK4-TEKNIKER has been working on a series of technologies for their incorporation into electromechanical actuator systems located at various parts of an aircraft, such as the landing gear and the cargo loading door.

An intelligent monitoring system has been developed for the latest-generation actuator systems. The development of a simulation model for the actuator and for certain faults considered to be critical has enabled establishing the normal behaviour pattern of the system and the creation of models for the early detection of faults from the internal signals of the simulation model. Subsequently, the test bench was adapted - one that had been previously manufactured for carrying out tests on hydraulic actuators - for monitoring on-ground and functional tests of the actuator. Moreover, the control electronics for the system was designed and developed in order to be handled remotely and acquire the necessary signals from the various sensors, and to monitor the behaviour of the actuator.

IK4-TEKNIKER has contributed its knowledge and knowhow to the study of new configurations for aircraft landing gear in order to recover energy during landing and take-off manoeuvres, with novel designs and characterisations of the magneto-rheological valve, and the manufacture of a high-flow test bench for these tasks of characterisation.

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