连铸结晶器混合驱动系统的非正弦振动波形
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摘要
针对频率、振幅和波形均可在线调整的连铸结晶器电动式混合驱动系统,提出与其运行模式相匹配的非正弦振动波形。首先阐明新型驱动系统非正弦波形的发生机理;然后按照激波机构的运行特点,考虑系统运行过程中的平稳性和运动约束条件,构建了激波机构的速度函数,进而根据驱动系统运动学推导出以频率、振幅和偏斜率为基本参数的结晶器非正弦振动波形;最后给出非正弦波形的关键工艺参数计算公式,讨论了vc-f、h同步控制模型中控制参数与振动工艺参数的关联规律,并以某中碳钢板坯连铸生产为例,利用关联规律,得到了完全符合振动工艺原则的非正弦控制模型,从而验证了该非正弦波形的有效性和实用性。
A non- sinusoidal oscillation wave of continuous casting mold is developed for a electrical type hybrid drive system whose parameters can be adjusted online,such as frequency,amplitude and oscillation wave. Firstly,the generation of non-sinusoidal wave of the new drive system is demonstrated. According to its operation characteristics,the angular velocity of the wave generator is constructed with consideration of the stability and constraint of motion. Then the nonsinusoidal oscillation wave of the mold containing frequency,amplitude and deviation factor is deduced by the kinematic rule of the drive system. Finally,the calculation method of the key technological parameters of the wave is given,with the relating regularity between the control parameters of vc- f、h model and the technological parameters discussed. Furthermore,an example that a non-sinusoidal control model in accordance with oscillation technology principle is calculated by control parameter adjustment rule for a medium carbon steel slab,which could identify the validity and practicality of the non-sinusoidal wave.
A non- sinusoidal oscillation wave of continuous casting mold is developed for a electrical type hybrid drive system whose parameters can be adjusted online,such as frequency,amplitude and oscillation wave. Firstly,the generation of non-sinusoidal wave of the new drive system is demonstrated. According to its operation characteristics,the angular velocity of the wave generator is constructed with consideration of the stability and constraint of motion. Then the nonsinusoidal oscillation wave of the mold containing frequency,amplitude and deviation factor is deduced by the kinematic rule of the drive system. Finally,the calculation method of the key technological parameters of the wave is given,with the relating regularity between the control parameters of vc- f、h model and the technological parameters discussed. Furthermore,an example that a non-sinusoidal control model in accordance with oscillation technology principle is calculated by control parameter adjustment rule for a medium carbon steel slab,which could identify the validity and practicality of the non-sinusoidal wave.
引文
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[3]方涛,向忠辉,李宏磊.连铸机结晶器液压振动常见故障分析与对策[J].机床与液压,2014,42(10):147.(FANG Tao,XIANG Zhong-hui,LI Hong-lei.Failure analysis and countermeasures of hydraulic oscillation of continuous casting mold[J].Machine Tool and Hydraulics,2014,42(10):147.)
[4]田志恒,田立,周永,等.结晶器非正弦振动系统的开发与应用[J].钢铁,2004,39(增刊):623.(TIAN Zhi-heng,TIAN Li,ZHOU Yong,et al.Development and application of non-sinusoidal oscillation system of mold[J].Iron and Steel,2004,39(s):623.)
[5]刘大伟,任廷志.非圆齿轮驱动结晶器非正弦振动的研究[J].中国机械工程,2013,24(3):327.(LIU Da-wei,REN Ting-zhi.Research on nonsinusoidal oscillation of mold driven by noncircular gears[J].China Mechanical Engineering,2013,24(3):327.)
[6]YAO Yun-feng,LI Xian-kui,FANG Yi-ming,et al.Study of nonsinusoidal oscillation of continuous casting mold driven by servomotor[J].Journal of Iron and Steel Research,International,2008,15(1):558.
[7]ZHANG Xing-zhong,ZHENG Xue-ran,LIU Qing-guo,et al.Investigation and application of non-sinusoidal oscillation technique of mold[J].Journal of Iron and Steel Research,International,2013,20(12):19.
[8]REN Ting-zhi,LIU Cai.Theoretical Study of an oscillating waveform function and parameters for controlling the non-sinusoidal oscillation of a mold[J].Chinese Journal of Mechanical Engineering,2004,17(4):606.
[9]孟祥宁,朱苗勇.连铸结晶器非正弦振动波形构造及参数研究[J].中国机械工程,2007,18(15):1779.(MENG Xiang-ning,ZHU Miao-yong.Non-sinusoidal oscillation waveform conformation and parametrical research for continuous casting mold[J].China Mechanical Engineering,2007,18(15):1779.)
[10]张兴中,刘庆国,黄文,等.连铸结晶器非正弦振动函数及工艺参数研究[J].钢铁,2014,49(8):42.(ZHANG Xing-zhong,LIU Qing-guo,HUANG Wen,et al.Investigation of non-sinusoidal oscillation waveform function and technological parameters for continuous casting mold[J].Iron and Steel,2014,49(8):42.)
[11]李宪奎,吴晓明,方一鸣,等.构造结晶器非正弦振动波形函数的方法[J].机械工程学报,2000,36(1):67.(LI Xian-kui,WU Xiao-ming,FANG Yi-ming,et al.Method to construct waviness function of mold non-sinusoidal oscillation[J].Chinese Journal of Mechanical Engineering,2000,36(1):67.)
[12]何予鹏,赵升吨,邹军,等.利用差动轮系实现机械压力机混合输入的研究[J].中国科学:E辑,2007,37(1):70..(HE Yupeng,ZHAO Sheng-dun,ZOU Jun,et al.Research on hybrid mechanical press with differential gear train[J].Science in China:Series E,2007,37(1):70.)