公开(公告)号：US5493293A

公开(公告)日：1996-02-20

申请号：US803659

申请日：1991-12-02

申请人： Rolf Hansen ,  Susan C. Kim ,  Douglas S. Ormiston

发明人： Rolf Hansen ,  Susan C. Kim ,  Douglas S. Ormiston

IPC分类号： G05D1/06 ,  G08B23/00

CPC分类号： G05D1/0615

摘要： A wind shear detection and alert system, compensated for the calibrated airspeed of the aircraft to minimize nuisance wind shear alerts. The wind shear detection and alert system (10) determines a reference airspeed as a function of flap position, with respect to a minimum maneuver airspeed signal (60) provided by a stall warning computer on the aircraft. The reference airspeed is subtracted from a calibrated airspeed signal (76) that has been filtered to remove minor variations in the signal using a Laplace filter (68). The differential airspeed is further filtered by another Laplace filter (78), producing a filtered differential airspeed signal (70), which the system uses to determine a delta threshold (48) to be applied in compensation for the aircraft airspeed to a wind shear alert reference signal. As the filtered differential airspeed increases, the delta threshold signal increases the absolute level of the wind shear alert threshold, reducing the likelihood of unnecessary wind shear alerts.

摘要翻译： 风切变检测和报警系统，补偿飞机的校准空速，以最大限度地减少危害风切变警报。 风切变检测和警报系统（10）相对于由飞机上的失速警告计算机提供的最小机动空速信号（60），确定作为挡板位置的函数的参考空速。 从经过滤波的校准空速信号（76）中减去参考空速，以使用拉普拉斯滤波器（68）消除信号中的微小变化。 差分空速被另一拉普拉斯滤波器（78）进一步滤波，产生滤波后的差分空速信号（70），系统用于确定要用于将飞机空速补偿到风切变警报的增量阈值（48） 参考信号。 随着经滤波的差分空速增加，增量阈值信号增加了风切变警报阈值的绝对水平，从而降低了不必要的风切变警报的可能性。