- a gear assembly
- a lever assembly
- a bellcrank assembly Throttle control lever travel is transmitted to the artificial feel unit and to the throttle control unit. The linear movement of the throttle control levers is transformed into a rotary movement at the bellcrank which turns around the friction brake assembly shaft. This movement rotates a toothed quadrant integral with the shaft. This toothed quadrant causes inverse rotation of a gear equipped with a disk which has four detent notches. Each notch corresponds to a throttle control lever setting and is felt as a friction point at the throttle control levers.
C. Throttle Control Unit (Ref. Fig. 005, 006, 007) A mechanical rod transmits the throttle control lever movement. It connects the throttle control artificial feel unit to the input lever of the throttle control unit. The throttle control unit comprises :
- an input lever
- mechanical stops which limit the angular range
- 2 resolvers whose signals are dedicated to the ECU (one resolver per channel of the ECU)
- 6 potentiometers fitted three by three. Their signals are used by the flight control system
- a device which drives the resolver and the potentiometer
- a pin device for rigging the resolvers and potentiometers
- 1 switch whose signal is dedicated to the EIU.
F 『 EEFF : ALL E Page 576-11-00
E E Feb 01/98 E E ECES E
Throttle Control Artificial Feel Unit
Figure 004
F 『 EEFF : ALL E Page 676-11-00
E E Feb 01/98 E E ECES E
Throttle Lever Angle Harness
Figure 005
F 『 EEFF : ALL E Page 776-11-00
E E Feb 01/98 E E ECES E
Control Unit - Mechanical Part
Figure 006
F 『 EEFF : ALL E Page 876-11-00
E E Feb 01/98 E E ECES E
F 『
E C F M E
E E
E 56-5B E
E E
Thrust Control Power Supplies
Figure 007
F 『 EEFF : ALL E Page 9/1076-11-00
E E Feb 01/98 E E ECES
E
F 『
E C F M E
E E
E 56-5B E
E E
- a safety device which leads the resolvers outside the normal operating range in case of failure of the driving device
- two output electrical connectors.
The input lever drives two gear sectors assembled face to face. Each
sector drives itself a set of one resolver and three potentiometers.
The relationship between the throttle lever angle and throttle resolver
angle (TRA) is linear and : 1 deg. TLA = 1.9 TRA.
The accuracy of the throttle control unit (error between the input lever
position and the resolver angle) is 0.5 deg. TRA.
The maximum discrepancy between the signals generated by the two
resolvers is 0.25 deg. TRA. The TLA resolver operates in two quadrants :
the first quadrant serves for positive angles and the fourth quadrant for
negative angles.
Each resolver is dedicated to one channel of the ECU and receives its
electrical excitation from the ECU.
The ECU considers a throttle resolver angle value :
- less than -47.5 deg. TRA or
- greater than 98.8 deg. TRA as resolver position signal failure.
The ECU incorporates a resolver fault accomodation logic. This logic
allows engine operation after a failure or a complete loss of the
throttle resolver position signal.
F 『 EEFF : ALL E Page 1176-11-00
E E Feb 01/98 E E ECES E
F 『
E C F M E
E E
E 56-5B E
E E
THROTTLE CONTROL - ADJUSTMENT/TEST
__________________________________
TASK 76-11-00-820-044
Adjustment of the Mechanical Linkage
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific blanking caps
No specific circuit breaker(s) safety clip(s)
No specific warning notice
98DNSA20206080 2 RIGGING PIN
R 98DNSA20208080 1 RIGGING PIN
B. Consumable Materials
-------------------------------------------------------------------------------
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：A320飞机维护手册 AMM ENGINE CONTROLS 发动机控制(4)
