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The network multimedia courseware developed by the modern education technology can overcome the insufficiency of the traditional college English teaching mode, improve teachers' English teaching efficiency, and enhance the students' application level of English. In this paper, firstly, the application of network multimedia courseware in college English teaching is told. Secondly, the theoretical basis,...
A strategy of microwave tomography enhancement using Kalman filter theory is proposed. A known object was placed in the imaging domain, and its inversion result was compared with its actual value to extract prior information. The differences between actual value and inversion result were due to the low pass filter performance determined by the microwave tomography system. Singular value spectrum of...
The paper presents a manipulator system based on DC reduction servo motor, this system consists of mechanical part and control part. The mechanical part has 5 degrees of freedom (DOF) and the control part uses SH14-M and SH30-M DC reduction servo motor to drive each joint. The upper computer software and the lower STC controller make the edit, debug and copy of the motion program of the manipulator...
This thesis studied the hydraulic servo system used on main press equipment of a multi-roller reversible cold rolling mill. Nozzle flapper type of electrohydraulic servo valve is now widely used. This type of servo valve has such problems as bad contaminating resisting ability, easy to be blocked by contaminating material and requires for highly system maintenance. These problems restricted the reliability...
Scissors lift platform with a wide range, the main platform, lift mechanism and the bottom are composed of three parts. Lifting from low to high lifting, the scissors posts, and the hydraulic cylinder layout multiple, mobile way has traction, self-propelled, booster, etc. Scissors lift mechanism of scissors post number and cylinder layout by lifting height. This paper is about a design based 3D software...
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