lp

This paper deals with analysis of main functional diagrams of step PID controllers for electric motor-driven actuators. The main formulae to calculate the parameters of the diagrams of step PID controllers are presented in the paper. The influence of these parameters on the transient processes in step controllers and on the output position of the actuator is analyzed. Transient processes in step controllers with motor-driven actuators are simulated in PI and PID control mode. These transient processes are compared to the transient processes in continuous controllers. The accuracy of step PID controllers is analyzed, and restrictions on the parameters of step PID controllers are presented. The diagrams of step PID controllers considered in this paper can be implemented in the up-to-date PLCs software for automatic control using the electric motor-driven actuators in the control loops.

RGB转YIQ以便取明暗度部分，对单一图像进行人脸定位。 (RGB to YIQ brightness to take part, a single image for face positioning.)

通过广播星历和精密星历实现GNSS数据的快速解算(The fast calculation of GNSS data is realized by broadcast ephemeris and precise ephemeris)

StdAfx.h for builder a C++ implementation.

matlab gui设计学习手册》 第二版 2012新版 第九章源码 matlab gui the second edition(matlab gui the second edition)

Kalman filter for RSSI signals

cross section for erbium dopped fiber amplifier

MATLAB中包络线的画法，子程序带DEMO(MATLAB envelope painting, subroutines with DEMO)

通过一系列教学实例，帮助学生很好的理解matlab中的符号运算实现微分、积分（定积分与不定积分）、极限、级数、绘图等常用功能，几乎可以推导高数中的绝大部分公式，也可用于理论公式推导。(Through a series of teaching examples to help students a good understanding of symbolic computation matlab achieve differentiation, integration (with the definite integral indefinite integral), ultimate, series, graphics and other commonly used functions can be derived almost most of the high number of formulas can also be used to derive theoretical formulas.)

说明：  通过50道练习题，对matlab进行了一个总体的实例讲解，对于初学者尽快了解matlab的功能与应用有很大帮助(Through the 50 exercises, carried out on an overall matlab examples to explain, as soon as possible for beginners to understand the function and application of matlab are very helpful)