大型飞机座舱温度控制系统控制律设计

doi:10.7527/S1000-6893.2017.721501

Abstract

Abstract:

A large-scale aircraft cabin temperature control system with the characteristics of non-linearity, complex coupling and big hysteresis proposes high requirements for the system control law design. In this paper, an innovative cabin temperature control law is proposed according to the system design requirements as well as the operation mechanism behavior feature. The system control scheme applies a four-level control mode, including the compressor outlet temperature control, the cooling pack outlet temperature control, the cabin supply air outlet temperature control and the cabin zone temperature control. The target of the compressor outlet temperature is calculated according to the ambient environment temperature. The target of the cabin supply air temperature is calculated by the cabin zone control error. The target of the cooling pack outlet temperature is determined by the lowest value of the cabin supply air temperature. The expert Proportion-Integration-Differentiation (PID) control method is employed to design the temperature controller. The decoupling control arithmetic and the system protection control logic are included in the design. The control period of the operation mechanism is determined by the temperature control response of each level. It is proved by the system ground test and flight test that the cabin temperature control system demonstrates the capability of quick response, strong anti-interference, high control accuracy, and can satisfy the system design requirements.

Key words: environment control system, cabin, temperature control, PID control, decoupling control

CLC Number:

V245.3

REN Mingbo, WANG Juan, LI Rongjun, DANG Ya. Control law design for temperature control system of large-scale aircraft cabin[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(S1): 721501-721501.

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Control law design for temperature control system of large-scale aircraft cabin

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