Accession Number : ADA624195


Title :   Scientific Research Program for Power, Energy, and Thermal Technologies. Task Order 0002: Power, Thermal and Control Technologies and Processes Experimental Research. Subtask: Laboratory Test Set-up to Evaluate Electromechanical Actuation Systems for Aircraft Flight Control


Descriptive Note : Interim rept. 1 Jan 2015-15 May 2015


Corporate Author : DAYTON UNIV OH RESEARCH INST


Personal Author(s) : Barnett, Street A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a624195.pdf


Report Date : Aug 2015


Pagination or Media Count : 118


Abstract : A laboratory apparatus and data acquisition (DAQ) system were constructed for evaluating aircraft flight control actuators under simulated mission profiles. An MTS Systems Corporation hydraulic load frame was used to simulate a control surface's aero load. A National Instruments Corporation (NI)-based DAQ system was used to record the motor controller's DC bus voltage at a high rate, actuator's position, load, and temperatures. The DC bus root mean square (RMS) voltage, current, and power, and regenerative power were recorded by a Newton's 4th power analyzer. Key performance characteristics tests such as frequency response, step response, reversal, backlash, and holding with a Danahar EC5 actuator were carried out to verify this laboratory setup. The continuous frequency sweeping test revealed that the electromechanical actuator (EMA) reached the speed limit first, then the current limit, and finally the temperature limit. When the actuator's electronics reached the thermal limit, the actuator controller drastically reduced its power. This caused drastic magnitude attenuation and phase lagging. Continuous frequency sweeping proved to be a useful test to evaluate the EMA's characteristics.


Descriptors :   *ACTUATORS , *ELECTROMECHANICAL DEVICES , *FLIGHT CONTROL SYSTEMS , *THERMAL PROPERTIES , AIRCRAFT , ANALYZERS , BACKLASH , CONTROL , CONTROL SURFACES , DATA ACQUISITION , ELECTRONICS , ENERGY , FREQUENCY , FREQUENCY RESPONSE , HIGH RATE , LABORATORIES , LABORATORY EQUIPMENT , LABORATORY TESTS , LIMITATIONS , MISSION PROFILES , PERFORMANCE TESTS , POSITION(LOCATION) , POWER , REDUCTION , REGENERATION(ENGINEERING) , RESPONSE , REVERSIBLE , SCIENTIFIC RESEARCH , SIMULATION , SURFACES , TEMPERATURE , TEST AND EVALUATION , VOLTAGE


Subject Categories : Flight Control and Instrumentation
      Non-electrical Energy Conversion
      Machinery and Tools


Distribution Statement : APPROVED FOR PUBLIC RELEASE