• Simulation of machine interference in randomly changing environmentsSimulation of machine interference in randomly changing environments

    Main features of a simulation tool have been introduced whic was developed for the investigation of the machine interference problem evolving in random environment(s). Steady-state performance measures of the system have been obtained under several service disciplines, assuming hypoexponentially distributed running and service times. Some sampl...

    pdf10 trang | Chia sẻ: huongthu9 | Ngày: 12/08/2021 | Lượt xem: 445 | Lượt tải: 0

  • On a class of non-Linear differential equations with exact solutionsOn a class of non-Linear differential equations with exact solutions

    - Equation of the form (1) is non-linear differential one, general exact solutions of which can be found. They include many particular cases, where exact solutions were defined by other methods. - To obtain exact solutions of non-linear differential equations of the form (1) one needs to know important informations about particular solutions (8...

    pdf11 trang | Chia sẻ: huongthu9 | Ngày: 12/08/2021 | Lượt xem: 446 | Lượt tải: 0

  • Controlling two-Wheeled self-balancing robot moving on inclined planeControlling two-Wheeled self-balancing robot moving on inclined plane

    This project has successfully presented that two – wheeled self – balancing robot can move on plane, inclined plane and preset orbit. The robot can itself balance when it was changed gravity by force from outside. It also can be controlled from smartphone or laptop. However, there are still some shortcomings. Although the robot can move forw...

    pdf8 trang | Chia sẻ: huongthu9 | Ngày: 12/08/2021 | Lượt xem: 558 | Lượt tải: 0

  • Experimental study on static thrust characteristics of Master Airscrew E9x6 propeller with ductExperimental study on static thrust characteristics of Master Airscrew E9x6 propeller with duct

    The thrust measurement system, presented in this paper, is used for the experimental study on the static thrust characteristics of the Master Airscrew E96 in cases of with duct and without duct. The results obtained indicate that it could be applied not only to test the thrust characteristics of small UAVS’s propellers but also to validate t...

    pdf7 trang | Chia sẻ: huongthu9 | Ngày: 12/08/2021 | Lượt xem: 511 | Lượt tải: 0

  • Chế tạo thiết bị cho công nghệ mạ xoa sử dụng để phục hồi chi tiết máy bị mài mònChế tạo thiết bị cho công nghệ mạ xoa sử dụng để phục hồi chi tiết máy bị mài mòn

    Since brush plating technology does not use a plating bath and it uses an anode moving directly on the surface of the plating parts, this technology can be used to restore surfaces of machine parts at defective areas due to either abrasion caused by operation or deficient dimensions caused by incorrect machining. As a result, this plating method...

    pdf7 trang | Chia sẻ: huongthu9 | Ngày: 12/08/2021 | Lượt xem: 620 | Lượt tải: 0

  • Thiết kế các mẫu máng héo ứng dụng cho ngành sản xuất chè Việt NamThiết kế các mẫu máng héo ứng dụng cho ngành sản xuất chè Việt Nam

    Success in researching on designing withering tea trough helps small and medium companies to apply easily to their producing condition. Depend on specific scale and producing condition, producer can choose for them the suitable side and composition of the withering tea trough. When using these kinds of withering tea trough, the product quality i...

    pdf7 trang | Chia sẻ: huongthu9 | Ngày: 12/08/2021 | Lượt xem: 489 | Lượt tải: 0

  • Motion of mechanical systems with non-Ideal constraintsMotion of mechanical systems with non-Ideal constraints

    This paper presents a new general method to analyze mechanical systems with non-ideal constraints. The program constraints are applied to the mechanical system by using the Principle of Compatibility. The paper pointed out that if a mechanical system is subject to non-ideal physical constraints, its motion depends on the interaction between the...

    pdf13 trang | Chia sẻ: huongthu9 | Ngày: 12/08/2021 | Lượt xem: 499 | Lượt tải: 0

  • A nonlilear controller for ship autopilotsA nonlilear controller for ship autopilots

    A nonlinear autopilot based on aggregated macro variables has been derived. The domain of design parameters has been defined. The control law depends explicitly on the ship parameters so that it is flexible to change. The performance of the controller was illustrated through a simulation study. Global stability of closed - loop system was proven...

    pdf8 trang | Chia sẻ: huongthu9 | Ngày: 12/08/2021 | Lượt xem: 425 | Lượt tải: 0

  • Change in mode shape nodes of multiple cracked bar - Part I: The theoretical studyChange in mode shape nodes of multiple cracked bar - Part I: The theoretical study

    An explicit expression for natural modes of bar with arbitrary number of cracks has been derived and used for analysis of change in mode shape node induced by the multiple cracks. In addition to the well known fact that mode shape nodes move toward the crack, it has been shown herein that dislocation of nodes caused by a single crack in bar is ...

    pdf16 trang | Chia sẻ: huongthu9 | Ngày: 12/08/2021 | Lượt xem: 469 | Lượt tải: 0

  • Change in mode shape nodes of multiple cracked barChange in mode shape nodes of multiple cracked bar

    The obtained numerical results show that the intermediate single node is generally arranged to move toward the crack that is closer to it. It may move toward farther crack if depth of the crack is larger than that of the rest. In the case of multiple nodes, the effect of a crack on dislocation of a node becomes more significant if the crack appr...

    pdf15 trang | Chia sẻ: huongthu9 | Ngày: 12/08/2021 | Lượt xem: 451 | Lượt tải: 0