Electronics Optics & Control, Volume. 20, Issue 11, 61(2013)
On Switching Suppresser for Restraining Pilot Induced Oscillations
When rate limiter is saturated in flight control systemtime delay would occur.The pilot induced oscillations (PIO) may come into being on condition that the pilot operates incorrectly.A simplified model of rate limiter was establishedand the switching suppresser designed by using logical conditions method was anatomized.The response properties of the openloop frequency and phase compensation ability of the suppresser were studied by using describing function.The openloop response properties of the suppresser to sine wave and bias input were discussed.A switching suppresser to prevent PIO was proposedand a mathematical model of closedloop aircraftpilot system with the derivative switching suppresser was set up.The step tracking tasks were simulated to study the performance the switching suppresser and DASA anticipatory control suppresser.The simulating results demonstrate that derivative switching suppresser effectively reduces the possibility of PIO.
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MENG Jie, CHE Wanfang, BO Tao, LAN Xinzhang. On Switching Suppresser for Restraining Pilot Induced Oscillations[J]. Electronics Optics & Control, 2013, 20(11): 61
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Received: Oct. 31, 2012
Accepted: --
Published Online: Dec. 4, 2013
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