This paper presents the methodology for design and control of a high-stiffness fast tool servo (FTS) system practical application in diamond machining freeform surfaces. The electromechanical model FTS is established by combining piezoelectric actuator flexure hinge mechanism formulation methodology. In order to accommodate nonlinearity, cutting force disturbances as well realize accurate tracking designated path required surfaces, novel adaptive terminal sliding mode (NATS) strategy capable...

In processing multilayer thin film materials, scanning electron microscopy (SEM) is commonly employed for observation. images of SEM, backscattered (BSE) particularly suitable distinguishing different components and layers the films. However, at high magnification levels, BSE often have blurriness noise, leading to low edge sharpness. This study proposes a method improving integrity accuracy edges. First, we segment image into contrast regions using masking algorithm. Second, enhance in...

Wavelength dispersion is a universal phenomenon in refractive optics that degrades optical performances. Current mitigation methods are being greatly challenged by the demanding requirements of miniaturization, low aberrations, high throughput, and accurate manufacture. Here, we propose an unconventional monolithic honeycomb-like lens concept with topological degrees design freedom, capable near diffraction-limited achromatic performance. To automate process, methodological framework...

To enhance the coordinates measuring accuracy of multi-beam laser tracking 3D system, measurement for optical error cat's eye retro-reflector is necessary. For this purpose, method retroreflector proposed. The main sources are analysed first, and associated experiment setup data processing described. Experiment results show that maximum measured approximately 4μm.

CCD arrays encode color information via uniformly distributed red, green and blue pixels. Therefore, even a perfectly achromatic system projecting an image onto plane cannot possibly associate single object point with the 3 or more discrete pixels encoding content. Here, we propose demonstrate micro-lens array (MLA) design that simultaneously corrects chromatic aberrations separates channels to spatially distinct Starting from commercially available aspheric condenser lens, methods assess...

SEM can be used for studying the microstructure observation and crystal structure analysis of materials. FIB-SEM dual beam system simply understood as coupling single focused ion SEM. In order to fully utilize grayscale information contained in microscopic morphology images, this paper proposes a three-dimensional reconstruction study based on principle binocular stereo vision image processing technology. The uses measure depth sample space, combines technology visual programming restore...

The existing behavior recognition models based on the deep convolutional neural network have some problems, such as feature extraction with a single scale and insufficient utilization in middle level. In this paper, we propose multi-scale residual aggregation multi-time division for recognition. Through sampling form of division, diversity depth features is enriched. Firstly, hybrid extended convolution block (HERB) designed using join different extension coefficients to extract information...

Microstructures of specified shapes have been widely applied in electronics, communication, optics, avionics, medical science, and the automotive field. The ultraprecision single-point diamond turning lathe is a core instrument used microstructure preparation. As key technical indicator an lathe, servo control accuracy system directly affects machining lathe. Because profile error microstructures machined by slow tool at micrometer level, any disturbance reduces parts machining. This paper...

Abstract Single-point diamond turning technology has been widely used in processing microstructures. The accuracy of ultraprecision cutting machine tools affects the performance microstructure. By improving structure tool itself, machining lathes almost become optimized. Therefore, this research identifies and analyzes linear axis tracking error through dynamic modeling a macro/micro system. Furthermore, impact on is obtained. Based system, servo compensation method proposed, effectiveness...

In athletics sports, accurate identification and correction of athlete's wrong posture can improve the quality daily training. course affine deformation human body is easy to occur, which leads appearance action feature points with low brightne