| 摘要 |
PCT No. PCT/GB91/01361 Sec. 371 Date May 27, 1992 Sec. 102(e) Date May 27, 1992 PCT Filed Aug. 9, 1991 PCT Pub. No. WO92/02411 PCT Pub. Date Feb. 20, 1992.A propeller control system comprises a phase controller (11) having a phase control gain to control a propeller phase relationship, free air turbulence detection means (7, 9) and a gain controller (8) for varying the phase control gain in response to detected free air turbulence such that in the presence of turbulence a low gain is selected and in the absence of turbulence a high gain is selected. By varying the gain in this way the sensitivity of the phase controller (11) is reduced during turbulent conditions preventing excessive phase changes by the controller (11) striving to follow a turbulent master propeller. Similarly a speed controller (14) has its gain set by a gain controller (17) according to the degree of turbulence detected.
|
