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超声波电动机是近年来发展起来的一种新型电机,它的发展和应用离不开超声波电动机的驱动控制技术,并且在很大程度上驱动器的性能决定了超声波电动机的性能。PSOC(Programmable System-on-Chip)是一款单片片上功率系统,包含丰富的可编程模拟模块,还有专为触摸设计的CapSense模块,内置微处理器和数字模拟外设,是具有真正混合信号处理能力的可编程片上系统。本文主要介绍了PSOC技术在行波型旋转超声波电动机驱动的直线位移机构步进运动控制系统中的应用。 相似文献
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本文从转速计量的相关背景入手,首先阐述了转速表的类型及检测技术和转速测量技术,详细的分析了苏联和英国转速表检定工作的概况,对照国外情况分析了我国转速计量技术发展的现状,最后分析了转速计量标准溯源情况。 相似文献
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通过对某型发动机高精度传动齿轮实际检测中检测误差的分析与论证,找出了产生测量误差的原因.分析表明,由于受零件结构影响,采用与零件定位内孔有间隙的检测心轴检测齿轮时,理论检测基准与实际检测基准不重合,导致检测结果不能反映出齿轮的真实的质量状态.在采取相应检测方法改进措施后,此类问题得以解决. 相似文献
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本文旨在通过分析混凝土搅拌楼配料秤的结构、检测原理,共同探讨混凝土搅拌楼配料秤的静态检测方法以及检测误差分析,从而确保配料秤计量性能的准确. 相似文献
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功率放大器的输出误差、压电陶瓷的洄滞及蠕变误差、驱动器之间的耦合误差等是影响 机器人运动精度的关键因素。采用视觉伺服控制方法,提高图像处理速度,是降低微操作机器人运动误差的必要措施。 相似文献
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在众多的工业门类中,我们常常会遇到要对某些旋转物体的转速进行监控,对旋转的方向进行识别以及对两个同时旋转物体的运动偏差进行控制的应用需求。文中通过对该类产品的讨论,为您提供了一种实用的控制方法。 相似文献
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提出一种无需编码盘和鉴相装置的往复发动机瞬态转速测量新方法.该方法是基于发动机振动信号最低谐次频率获得发动机的估计转速,在发动机转速平稳或波动不大情况下采用离散频谱校正技术对估计转速进行校正以提高测量精度;在发动机处于升速或降速等非平稳状态时则利用获得的估计转速对发动机进行阶次跟踪,利用阶次谱获得估计转速校正参数,从而实现对发动机瞬态转速的动态测量.台架实验和不同缸数的实车测试都验证了该算法在发动机转速提取上具有很高的精度.较之在文献中常见的基于编码器的转速测量方法,这种方法硬件简单,特别适用于在用车日常维护和检测中使用. 相似文献
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Coordinate measurement systems (CMSs) dominate the dimensional control and diagnostics of various manufacturing processes. However, CMSs have inherent errors caused by the lack of a tracing ability for some of the measured part features. This is important for product inspection and process variation reduction in a number of automated manufacturing systems, such as for example the automotive body assembly process. The lack of a feature tracing ability means that instead of measuring a given feature, the CMS may actually measure the area around the selected feature. In this paper, a principle for the part feature tracing ability and the resultant feature-based measurement error analysis are developed to estimate the aforementioned deficiencies in the CMSs. The impact of feature type and part(s) positional variation on the feature-based measurement error is explored. The proposed approach is applicable to both contact and non-contact CMSs including both mechanical and optical coordinate measuring machines An analysis of the error for different measurement algorithms is presented. We show that the developed feature-based measurement error can have a significant impact on the measurement accuracy and hence on process control and the diagnostic algorithms currently used in manufacturing. A feature-based error map and error compensation approach are also developed and presented. Simulations, experimental results and two industrial case studies illustrate the proposed method. 相似文献
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A review of the analysis of our earlier paper is presented, where systems mathematics is utilized to define in a direct way
the conditions for exact lumping of monomolecular first-order kinetic systems. A new extension is to show that a system that
is exactly lumpable in a batch reactor will follow the same lumping in any reactor type. In addition, our new approach shows
how cluster analysis provides a useful way to analyse approximate lumping. This is especially important when measurement error
is present, since the implementation of a successful lumping scheme must be viewed in the context of the errors.
The connection of this work with Dr Doraiswamy is that the senior author was invited to present a plenary lecture at ICREC-1
in 1984, where a very preliminary form of the work (unpublished) was presented. 相似文献
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介绍黑体炉及红外测温仪的基本工作原理。分析红外测温仪检定时测量误差产生的原因,并提出了减小误差的措施和方法。 相似文献