The input increase is constrainted by softing coefficient matrix to obtain smoothing input,and it is need not to calculat inverse matrix to increase responding speed of the system.

The paper carried out the reasoning of the formula which implies the relationship between optical modulation depth and the input level of a optical transmitter and the formula implied between single channel modulation depth and bestir level & bias current.

In the essay narrate how to use the amplifier of cable TV correctly from five aspects: the character and kinds of amplifier, the transmission character of coaxial cable and taps to the TV signal, the smallest input level, the output level of amplifier and the points for attention of using amplifier.

During the designing and debugging of traditional CATV distribution amplifiers,a wide range of input levels and output levels have to be applied due to the limitation of distortion index,which is disadvantageous to improve the distribution efficiency and C/N index of the amplifier.

This paper studies on the finite time robust absolute stability and input-output stability of a proportional navigation guidance system based on the planar engagement geometry.

Based on the system input-output stability theory, some sufficient conditions are proposed in this paper to check the robust stability of the nicely nonlinear control system.