The mathematical model of Three-phase Voltage Pulse Width Modulation (PWM) DC/AC inverter is non-linear, in view of the traditional linear control strategy can not meet the requirements of designing high-performance D...
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In this paper, the development of a multiple-sensor coordinate measuring system is introduced and its applications to automated part localization and rapid surface digitization are experimentally demonstrated. The dev...
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In this paper, the development of a multiple-sensor coordinate measuring system is introduced and its applications to automated part localization and rapid surface digitization are experimentally demonstrated. The developed multiple-sensor coordinate measuring machine (CMM) is characterized by an integrated use of a high-precision CMM equipped with a motorized touch probe, and a three-dimensional (3-D) active vision system, advanced computational software, and the associated electronics. The 3-D active vision system consists of three components: a charge-coupled device camera, a digital light professing (DLP) projector, and a personal computer with an image processing board. The DLP projector is based on the innovative digital micro-mirror device, which can be controlled by the personal computer to project various structured light patterns. With the flexibility of the DLP projector, the orientation, range, density, and colors of the structured light patterns are programmable and adaptable to different needs. Consequently, the active vision system is capable of digitizing surface coordinates of objects having multiple features. With the coordinate data acquired using the 3-D active vision system, intelligent feature recognition algorithms can be applied to extract the global surface information of the object. The obtained information can be subsequently used to automatically guide the touch probe for rapid coordinate data acquisition and to strategically control the coordinate measuring machine for high precision sampling of critical surface area. In this paper, the information automation for the multiple-sensor integrated system is demonstrated in part localization when computer-aided design models are available, and rapid and high-precision surface digitization in reverse engineering. By integrating the developed technology with the state of the art equipment, a highly automated high-speed high-precision 3-D coordinate acquisition system can be developed. It has po
Traditional item positioning system is usually categorized into manual operation or database statistics due to the fact that these items are highly important and have large circulation. However, this method has low ef...
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The specific relationships between the classical pole-placement state feedback, the RICCATI equation based LQ paradigm and the KALMAN frequency domain approach are discussed. It is shown that arbitrary pole placement ...
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ISBN:
(纸本)9780889869226
The specific relationships between the classical pole-placement state feedback, the RICCATI equation based LQ paradigm and the KALMAN frequency domain approach are discussed. It is shown that arbitrary pole placement is not possible by standard LQ optimality. A possible solution of this anomaly is to use more general LQ criterion with specific weights on the state, input and crossterm.
Symbolic execution [1, 2] is widely used in software test cases automatic generating, but it's hard to use it in embedded software testing, for embedded software is related to hardware too close. And at present, e...
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Analyzed the ultimate reason of over-cladding and under-cladding through combining with the existing parallel scanning mode for laser metal deposition shaping (LMDS). A kind of scanning path generating algorithm is pr...
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Positioning and location tracking are two major needs of the modern era;in which logistics, industry automation, smart buildings/cities and the Internet of Things concepts are trending topics and are constantly evolvi...
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Variations in illumination still pose a major constraint in face recognition systems. Though many steps have been taken in this area, it continues to be a challenging field in this domain. We propose a framework to ov...
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This paper is concerned with stability robustness of digital control systems, where the controllers are implemented with fixed-point arithmetic. An analytical approach is proposed to transferring the original stabilit...
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The paper presents a distributed digital motion control system based on SERCOS (Serial Real-time Communication System). The transmission medium is optic fiber, which guarantees the system is noise immunity and high sp...
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