By researching initial position error and elliptical possibility position area of target,it sets forth the model of trapeziform possibility position area and simulates the model by numerical emulation.

An approach of the iterative learning control for linear continuous system with the initial error;

Study on the regularity of predictability limit of chaotic systems with different initial errors;

Then,the effect of initial errors for telemetric data and exterior data are minutely induced,and a linear separation model of initial launched parameter errors for wars.

Checking method of initial position for surface-mounted permanent magnet linear synchronous motor;

The initial position and velocity of pulverized coal at oxygen coal lance outlet has been proposed,thus injection of pulverized coal in the blast furnace can be simulated.

The inaccurate measurement of initial position of motor rotor when the motor starts is a problem existing in a servo system applying increment photo-electricity pulse coder.

The numerical solution for the dynamic process and the operation time are given, the influences of the initial position angle on dynamic operation time of the motor are also analyzed in this paper.