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This thesis investigated the design and implementation of a
control stick for the control loading task in a flight
simulator, to accuately reflect those felt by the pilot in
actual flight. The control loading forces applied on the
control stick aware the pilot of the actual flight conditions
so as to generate appropriate control commands to correct the
aircraft attitude, or the other state variables.In order to
realize the control loading system, a two-axis servo controlled
stick, based on two dc servo motors and control stick
mechanism, is designed to imitate the feel characteristics.
Because of the complexity, time-consuming computation and real-
time consideration of aircraft flight simulation, such a
control loading system is difficult to be implemented in a
standard personal computer (PC). A digital signal processor is
hence incorpored to increase the efficiency and reliability of
computation and satisfy the real-time requirements. For the
convienient and inexpensive implementation of the integrated
flight simulator in the future, we utilize the PC-based
industrial controller to manage the control loading system. A
closed-loop control loading system is setup by connecting the
PC-based industrial controller and digital signal processor
(DSP) plugged in the other PC. This research establishes the
integration between PC-based industrial controller and DSP. And
in combination, they are able to realize an active control
stick system.
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