초록 ▼

A control system for small unmanned rotorcraft compensates for vehicle pitch control saturation caused by the need for sudden vehicle pitch attitude correction, in turn often caused by wind gusts. The rotorcraft has a pitch-variable rotor system responsive to a vehicle pitch servo command for cyclic

A control system for small unmanned rotorcraft compensates for vehicle pitch control saturation caused by the need for sudden vehicle pitch attitude correction, in turn often caused by wind gusts. The rotorcraft has a pitch-variable rotor system responsive to a vehicle pitch servo command for cyclically controlling rotor pitch and responsive to a collective servo command for collectively controlling rotor pitch. A compensating signal derived from the unlimited vehicle pitch servo command signal is cross-connected to the unlimited collective servo command signal to compensate for pitch control saturation, typically by reducing the magnitude of the resulting collective servo command signal. The compensating signal is derived by passing the unlimited vehicle pitch servo command signal through a dead band which responds as the signal approaches saturation and by preferably also then providing high and low frequency shaping to that signal.

대표청구항 ▼

[ What is claimed is:] [1.] A control system for a flight vehicle having a pitch-variable rotor system responsive to a vehicle pitch servo command signal for cyclically controlling rotor pitch and responsive to a collective servo command signal for collectively controlling rotor pitch, the control s

[ What is claimed is:] [1.] A control system for a flight vehicle having a pitch-variable rotor system responsive to a vehicle pitch servo command signal for cyclically controlling rotor pitch and responsive to a collective servo command signal for collectively controlling rotor pitch, the control system comprising: means for providing an unlimited vehicle pitch servo command signal, means for providing an unlimited collective servo command signal, and signal conditioning means responsive to the unlimited vehicle pitch servo command signal for providing a modified unlimited vehicle pitch servo command signal for combining with the unlimited collective command signal to generate the collective servo command signal compensated for vehicle pitch control saturation.