传统的模拟控制虽然具有连续性好、响应速度快及成本低的优点,但也有难以克服的缺点,如系统调试困难,容易受到环境温度变化的影响而产生漂移,GYS751DC2-T2C难以实现柔性化设计,缺乏实现复杂计算的能力,无法实现现代化控制理论指导下的控制算法等。
所以现代伺服控制均采用全数字化结构,伺服控制系统的主要理论也采用了现代矢量控制思想,它实现了电流向量的幅值控制和相位控制。为了提高产品的性能,新一代的伺服控制器采用了多种新技术、新工艺,主要体现在以下几个方面:在电流环路中采用了d-q轴变换电流单元,在新的控制方式中,主CPU的运算量得以减少,通过硬件来进行电流环控制,即将控制算法固化在LSI专用硬件环路中。
安川 伺服 代理 程先生 需要 请 查看 联系方式 ,静候 咨询 !
则工频情况下的对比分析结果见表2,图6~图12为模型1绝缘电场和第一层纸筒油纸交界面的切向场强计算结果; 模型2的输出结果与模型1的图6~图12相似,故不再给出。计算结果与试验结果的相对误差小于7.0%。因此,采用上述计算方法判断绝缘设计的可靠性时,GYS751DC2-T2C小的绝缘裕度以大于1.1为宜。
本文开发的超高压变压器主、端绝缘优化设计和整体可靠性评价数值计算技术已用于500kV和750kV变压器新产品的开发设计中,其推广应用结果的详细内容将在其它文章中报道。
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