But how precisely these inputs are converted into a test score is a mystery, and without knowing which lever to pull, it is difficult to design an effective incentive scheme.

This paper presents a simulation test control system of an airplane engine operating system, which control motor to simulate the force and velocity of throttle lever and the torque on axis.

The binary tree forest data structure is used to describe the lever load system of structure test. On the basis of this description, a optimum method of load system design is studied.