不久前,美国OMAC（开放式模块化结构控制用户组织）正式宣布更名为机械自动化与控制（Machine Automation and Control,0MAC）组织,标志着该组织对未来使命目标已经从单一的机械设备控制器开放互连拓展到整个机械自动化的开放,标准和互...不久前,美国OMAC（开放式模块化结构控制用户组织）正式宣布更名为机械自动化与控制（Machine Automation and Control,0MAC）组织,标志着该组织对未来使命目标已经从单一的机械设备控制器开放互连拓展到整个机械自动化的开放,标准和互连互通。另一方面,OMAC改变以前只接受个人用户的做法，展开更多
As a key te..hnology in the field of advanced manufacturing, an open architecture controller is studied. In order to develop an open architecture software-CNC system on personal computer （PC） according to open modul...As a key te..hnology in the field of advanced manufacturing, an open architecture controller is studied. In order to develop an open architecture software-CNC system on personal computer （PC） according to open modular architecture controllers （OMAC）. First, the software and hardware platform is chosen and software realization methodology for the CNC system is determined. Second, static modeling methods of an open architecture controller inclusive of object-oriented （OO） programming technology, dynamic link library （DLL） technology and system modules partition are investigated. Third, the dynamical behavioral modeling and the data flow representation of open architecture controller are discussed, which are both described in hierarchy fmite state machine （FSM） model. Fourth, a reusable software module model is established to develop software function module library. Finally, a 3-axis milling machine tool test-bed, named for HIT-CNC, is successfully designed by means of the constructed software function module library and the system configuring method. The experimental results show that, besides increasing the degree of reusability and openness, application of above-mentioned method- ology leads to significant decrease of development time as well as maintenance cost.展开更多
以柑橘皮渣为原料,接种米曲霉,以液态摇瓶发酵的形式进行曲酸生产的研究。采用Box-Behnken中心组合设计,通过响应面法优化柑橘皮渣发酵的最佳工艺。结果表明,最佳发酵参数为米曲霉接种量4%、柑橘皮渣添加量13 g/100 m L、酵母膏添加量1....以柑橘皮渣为原料,接种米曲霉,以液态摇瓶发酵的形式进行曲酸生产的研究。采用Box-Behnken中心组合设计,通过响应面法优化柑橘皮渣发酵的最佳工艺。结果表明,最佳发酵参数为米曲霉接种量4%、柑橘皮渣添加量13 g/100 m L、酵母膏添加量1.5 g/100 m L、Mg SO4·7H2O添加量0.05 g/100 m L,在此条件下发酵制得的曲酸质量浓度最高,为(11.84±1.44)mg/m L。展开更多
文摘不久前,美国OMAC（开放式模块化结构控制用户组织）正式宣布更名为机械自动化与控制（Machine Automation and Control,0MAC）组织,标志着该组织对未来使命目标已经从单一的机械设备控制器开放互连拓展到整个机械自动化的开放,标准和互连互通。另一方面,OMAC改变以前只接受个人用户的做法，
基金Key Development Program of ScienceTechnology of Heilongjiang Province, China (GB05A501)
文摘As a key te..hnology in the field of advanced manufacturing, an open architecture controller is studied. In order to develop an open architecture software-CNC system on personal computer （PC） according to open modular architecture controllers （OMAC）. First, the software and hardware platform is chosen and software realization methodology for the CNC system is determined. Second, static modeling methods of an open architecture controller inclusive of object-oriented （OO） programming technology, dynamic link library （DLL） technology and system modules partition are investigated. Third, the dynamical behavioral modeling and the data flow representation of open architecture controller are discussed, which are both described in hierarchy fmite state machine （FSM） model. Fourth, a reusable software module model is established to develop software function module library. Finally, a 3-axis milling machine tool test-bed, named for HIT-CNC, is successfully designed by means of the constructed software function module library and the system configuring method. The experimental results show that, besides increasing the degree of reusability and openness, application of above-mentioned method- ology leads to significant decrease of development time as well as maintenance cost.
文摘以柑橘皮渣为原料,接种米曲霉,以液态摇瓶发酵的形式进行曲酸生产的研究。采用Box-Behnken中心组合设计,通过响应面法优化柑橘皮渣发酵的最佳工艺。结果表明,最佳发酵参数为米曲霉接种量4%、柑橘皮渣添加量13 g/100 m L、酵母膏添加量1.5 g/100 m L、Mg SO4·7H2O添加量0.05 g/100 m L,在此条件下发酵制得的曲酸质量浓度最高,为(11.84±1.44)mg/m L。
