The design of a turbofan rotor speed control system, using model reference adaptive control（MRAC） method with input and output measurements, is discussed for the purpose of practical application. The nonlinear compe...The design of a turbofan rotor speed control system, using model reference adaptive control（MRAC） method with input and output measurements, is discussed for the purpose of practical application. The nonlinear compensator based on functional link neural network is used to deal with the engine nonlinearity and the hardware-in-loop simulation is also developed. The results show that the nonlinear MRAC controller has the adequate performance of compensating and adapting nonlinearity arising from the change of engine state or working environment. Such feature demonstrates potential practical applications of MRAC for aeroengine control system.展开更多
This paper attempts to construct a theory of the social world.It builds upon three previous constructions:First,Bourdieu’s habitus(an unarticulated and impoverished web of meaning)and field (the structure of power),b...This paper attempts to construct a theory of the social world.It builds upon three previous constructions:First,Bourdieu’s habitus(an unarticulated and impoverished web of meaning)and field (the structure of power),being a paraphrase of Merleau\|Ponty’s body and world.Second,Saussure’s language,interpreted as a web of meaning.Third,the time structure of Garfinkel’s sociological gaze,identified as an infinite and alternating series of two time states,namely,the mundane and the reflexive,in which the agent is supposed to be living.It argues for three propositions:First,Merleau\|Ponty’s world,with its two dimensions being Bourdieu’s field and Saussure’s language,together with Merleau\|Ponty’s body,moves back and forth between the two time states.Second,Bourdieu’s agent(Merleau\|Ponty’s body carrying Bourdieu’s habitus)lives in harmony with Merleau\|Ponty’s world in the mundane state only.Third,once Merleau\|Ponty’s body steps into the reflexive state,it changes into Weber’s actor.展开更多
文摘The design of a turbofan rotor speed control system, using model reference adaptive control（MRAC） method with input and output measurements, is discussed for the purpose of practical application. The nonlinear compensator based on functional link neural network is used to deal with the engine nonlinearity and the hardware-in-loop simulation is also developed. The results show that the nonlinear MRAC controller has the adequate performance of compensating and adapting nonlinearity arising from the change of engine state or working environment. Such feature demonstrates potential practical applications of MRAC for aeroengine control system.
文摘This paper attempts to construct a theory of the social world.It builds upon three previous constructions:First,Bourdieu’s habitus(an unarticulated and impoverished web of meaning)and field (the structure of power),being a paraphrase of Merleau\|Ponty’s body and world.Second,Saussure’s language,interpreted as a web of meaning.Third,the time structure of Garfinkel’s sociological gaze,identified as an infinite and alternating series of two time states,namely,the mundane and the reflexive,in which the agent is supposed to be living.It argues for three propositions:First,Merleau\|Ponty’s world,with its two dimensions being Bourdieu’s field and Saussure’s language,together with Merleau\|Ponty’s body,moves back and forth between the two time states.Second,Bourdieu’s agent(Merleau\|Ponty’s body carrying Bourdieu’s habitus)lives in harmony with Merleau\|Ponty’s world in the mundane state only.Third,once Merleau\|Ponty’s body steps into the reflexive state,it changes into Weber’s actor.
