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管道自动焊接过程中微调控制的作用机理 被引量:3
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作者 林红香 端云 《焊管》 2020年第9期46-50,共5页
为了实现管道自动化焊接过程自适应调节,在分析了错边量、间隙、干伸长等一元或多元变量因素对管道自动化焊接过程影响的基础上,研究了焊接过程中微调动作在改善焊缝成形及保证自动化焊接质量方面的作用机理。研究结果表明:通过对焊枪... 为了实现管道自动化焊接过程自适应调节,在分析了错边量、间隙、干伸长等一元或多元变量因素对管道自动化焊接过程影响的基础上,研究了焊接过程中微调动作在改善焊缝成形及保证自动化焊接质量方面的作用机理。研究结果表明:通过对焊枪位置、摆动幅度以及焊接速度的适时调节来控制不同变量因素条件下热输入、熔池液态金属流动和焊丝填充量的变化,优化焊接工艺参数与焊缝成形系数的匹配,可大幅减小钢管尺寸误差、坡口加工和组对等因素对焊缝成形的不良影响;微调动作机理应用在焊缝追踪系统中,可以为实现管道焊接全自动化、智能化控制应用提供理论和试验依据。 展开更多
关键词 管道 自动化焊接 微调机理 智能化控制
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UNI-SPEC:An Instruction Set Description Language 被引量:2
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作者 朱德新 Cheng +2 位作者 Xu Song Chuanhua 《High Technology Letters》 EI CAS 2003年第4期33-38,共6页
Microprocessor development emphasizes hardware and software co design. Hw/Sw co design is a modern technique aimed at shortening the time to market in designing the real time and embedded systems. Key feature of this ... Microprocessor development emphasizes hardware and software co design. Hw/Sw co design is a modern technique aimed at shortening the time to market in designing the real time and embedded systems. Key feature of this approach is simultaneous development of the program tools and the target processor to match software application. An effective co design flow must therefore support automatic software toolkits generation, without loss of optimizing efficiency. This has resulted in a paradigm shift towards a language based design methodology for microprocessor optimization and exploration. This paper proposes a formal grammar, UNI SPEC, which supports the automatic generation of assemblers, to describe the translation rules from assembly to binary. Based on UNI SPEC, it implements two typical applications, i.e., automatically generating the assembler and the test suites. 展开更多
关键词 formal grammar retargetable assembler generator instruction set architecture
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UV Wavelength Tunable Output System Controlled by Microprocessor
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作者 JIANG Wanlu ZHANG Shuqing +1 位作者 WU Zhaoxia WANG Yutian (Yanshan University, Qinhuangdao 066004, CHN ) 《Semiconductor Photonics and Technology》 CAS 1998年第2期98-103,共6页
UV wavelength auto-tuned tuned output system is realized by the difference method. Controlled by the microprocessor, output wavelength auto- tracking is achieved.Besides, equipment self-checking auto-positioning and t... UV wavelength auto-tuned tuned output system is realized by the difference method. Controlled by the microprocessor, output wavelength auto- tracking is achieved.Besides, equipment self-checking auto-positioning and temperature correct are realized,The wavelength tuned output efficiency in the experiment is better than 97 %. 展开更多
关键词 Method of Difference Microprocessor Control PID Regulation Wavelength Auto-tracking
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