Guo Yan-qing

Automatic control of deep-hole chrome-plated system basing on WinCC

Aim at the drawback of original chrome-plated system and the demand of modified control system, while retaining the original manual control mode, in this paper, SIMENS configuration software WinCC and S7-300 series PLC as well as the original systems automatic equipment are proposed to compose the DCS system, having realized the automation of the entire electroplated production process, and at the same time system remote monitoring function is added to ensure that the entire production process can be carried out smoothly. In this system, PC configuration software mainly completes the function of data acquisition, history database management, parameter setting of production process, simulation display of production scene, warning, report form and printing. Modified system has realized dual-process running simultaneously and automatic control of all the electroplated power supply and temperature of the key slot. Feasibility of the control plan has been confirmed through experimental data. The system has been applied to practice, and since trial operation of the system, the product has been completely qualified and received high praise from the users.

On development of stoke sensing system for magnetic-grating-like hydraulic cylinder

A displacement sensing system with the prototype of magnetic-grating-like hydraulic cylinder is developed. It consists of a signal acquisition module, a signal conditioning module, a signal processing module, a signal isolation module and an electrical stimulator module. The system realizes signal processing with the application of tangent segmentation principle. Tests of this devised system have been carried out on laboratory setup. Experimental studies and data analysis are performed to verify the significance of the proposed system.