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Design of Control System for Bearing Tester
Long-Qi Zu,Bao-Ying Li,Yang Chen 한국멀티미디어학회 2006 한국멀티미디어학회 국제학술대회 Vol.2006 No.-
A design of control system used in bearing parameter tester is introduced, using GE company PLC (programmable logic controller) as main control unit, PT (programmable Terminal) as data display & control unit, IPC (Industry Processing Computer) as monitor unit, by means of the communication between IPC and PLC, PLC and PT, control system realized the parameter test for the special bearing. The designed programmer on PLC realized bearing parameter test for example pressure, velocity, PV(present value) value and so on. The designed programmer on PT realized that bearing parameter test have all kind functions for example manual running, auto-running, simulation running and so on. It has been testified that the system has higher reliability, tested bearing parameter up to scratch and better property.
Li, Li Xia,Ling, Qi Long,Liu, Zu Liang,Xing, Xiao Dong,Zhu, Xiao Qin,Meng, Xiao Korean Chemical Society 2012 Bulletin of the Korean Chemical Society Vol.33 No.10
A series of polystyrene-supported 1-(propyl-3-sulfonate)-3-methyl-imidazolium hydrosulfate acidic ionic liquid (PS-$[SO_3H-PMIM][HSO_4]$) catalysts were prepared and tested for mononitration of simple aromatics compounds with nitric acid. It was found that the reactivity of the catalysts increased with increasing $[SO_3H-PMIM][HSO_4]$ content. The para-selectivity was not only related to the $[SO_3H-PMIM][HSO_4]$ content but also the substituent groups in aromatics. A reaction mechanism of nitration over this new catalyst was proposed. The catalytic activity of this catalyst decreased slightly after fifth runs in the synthesis of nitrotoluene.
Li Xia Li,Qi Long Ling,Zu Liang Liu,Xiao Dong Xing,Xiao Qin Zhu,Xiao Meng 대한화학회 2012 Bulletin of the Korean Chemical Society Vol.33 No.10
A series of polystyrene-supported 1-(propyl-3-sulfonate)-3-methyl-imidazolium hydrosulfate acidic ionic liquid (PS-[SO3H-PMIM][HSO4]) catalysts were prepared and tested for mononitration of simple aromatics compounds with nitric acid. It was found that the reactivity of the catalysts increased with increasing [SO3HPMIM][ HSO4] content. The para-selectivity was not only related to the [SO3H-PMIM][HSO4] content but also the substituent groups in aromatics. A reaction mechanism of nitration over this new catalyst was proposed. The catalytic activity of this catalyst decreased slightly after fifth runs in the synthesis of nitrotoluene.