航空电子设备 自动驾驶仪

Autopilot Components
NBAA 2003
• Signal Processing Control inputs needed to hold an ILS glidepath at low speed will be different to
those needed to maintain altitude and heading whilst in the cruise at high Mach number. To meet these demands, the signal processing function of the AFCS must be suitably programmed and, in addition to providing an output signal to the controls to satisfy a selected mode (e.g. hold a selected altitude), the processor must constantly analyze inputs to see if the required values are being achieved.
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Autopilot Components
NBAA 2003
• Signal Processing The computing capabilities of autopilot systems have improved to the stage where a modern system can command virtually any flight path required. Provided it is within the performance capability of the aircraft. To satisfy various altitude and speed requirements, the signal processing function must be capable of varying the demanded control deflection to suit the situation.
Servo
Control Feedback
Control Surfaces
Figure 3.5
•பைடு நூலகம்Autopilot Control The control function allows the pilot to engage and disengage the autopilot, and
instruct it to follow selected ‘paths’ such as navigation tracks, climbs/descents, and specified altitudes. These ‘paths’ are normally referred to as modes.
Autopilot Components
NBAA 2003
• Signal Processing Sensing systems must provide inputs to the processor about deviations from the
selected value. Also, the processor must receive feedback from the control servos to ensure that the commanded control movements have been achieved.
Autopilot (AP)
Autopilot
NBAA 2003
自动驾驶仪
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Autopilot
NBAA 2003
The basic function of the autopilot is to control the flight of the aircraft and maintain it on a pre-determined path in space without any action being required by the pilot (Once the pilot has selected the appropriate control mode(s) of the autopilot.).
Sensing Systems
Performance Feedback
Performance Feedback Signals
Control
Signal Processing
Servo
Control Surfaces
Control Feedback
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Sensing Systems
Performance Feedback
Performance Feedback Signals
Control
Signal Processing
Servo
Control Surfaces
Control Feedback
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Sensing Systems
Performance Feedback
Performance Feedback Signals
Control
Signal Processing
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Autopilot Components
Sensing Systems
Performance Feedback
NBAA 2003
Performance Feedback Signals
Control
Signal Processing