| Abstract:
When designing the control laws for a new program, the aircraft manufacturer has to face to numerous constraints: New hardware, new system architecture, new structural specificities, new functions, new certification basis. More, automatic control theory improves continuously. Then the engineers develop, each time, a new set of control laws. It needs some time, in development phase, but also during the flight test phase. To save time, reduce cost and to minimize risk of such new developments, a new (once again, but breaking the rules) concept has been designed: G*, the Generic Control laws. This concept proposes a new way of designing and computing the control laws, absolutely generic. The same set of laws is applied to all AIRBUS family members, covering almost all the functions, from take-off to landing, in manual and automatic modes, including all the flight domain protections. The interests are numerous: drastic reduction of development lead time, before and during flight test campaign, strong family behavior, best performance and safety level, certification easiness, and technical synergy with other disciplines. GSTAR is already partially applied on A350. It will be used on any new model, and is also introduced on legacy programs depending on opportunities. This paper explains the equation cascade method to compute in real time the linear part of the control laws.
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View PDF CEAS-GNC-2019-065