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 Wysłany: Nie 1:21, 09 Sty 2011 Temat postu: ΜCOS- Ⅱ-based all-digital automotive inst |
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ΜC/OS- Ⅱ-based all-digital car dashboard
True analysis of CLC: U463.83 Document code: A Article ID :1005-2550 (2007) 04-0046-04 full floating cab of commercial vehicles. If the amplitude of vertical vibration of the cab too. Vehicle parts and components will affect the assembly of a normal relationship between the kinematics and dynamics. Components can cause serious damage, and even security issues. Therefore cab suspension system in the vertical direction must have adequate capacity limit of existing models to use more rigid limit structure. Namely the use of baffle spacing on the frame to achieve the purpose of vibration limit. Rigid limit structure is simple. However, in the course limit the impact of collision exists. A serious impact on ride comfort is another way to limit the use of flexible limit structure. It can not produce the same time limit the impact. Flexible limit on the ability of the theory and limit analysis. At present, not been reported. This article analyzes the principle of the flexible limit. Establishment of flexible and rigid limit capacity limit simulation model. Float with the typical commercial vehicles for the whole two comparative simulation analysis of the structure. Limit for the flexible design provides a valuable reference. 1 cab vertical vibration analysis of the so-called soft limit flexibility theory is a relatively rigid limit in terms of the rigid limit limit limit function of the structure achieved by the limit block. The suspension system consists of elastic elements, damping elements, the impact of block and baffle composition of the upper and lower limit. The structure shown in Figure l. Installed in the cab on the impact of the block,[link widoczny dla zalogowanych], the upper and lower limit baffle installed in the chassis. Baffle spacing is the vertical distance between the vertical vibration of the cab when the cab to allow travel up Received 13 :2006-12-21 (under) the amplitude is too large,[link widoczny dla zalogowanych], making the impact of the block and the upper (lower) limit block board surface. Limit the impact of the bezel to stop the block out of bounds. Thus play a limited role in the amplitude of the cab. Baffle blocks and limit the impact at this time to ask collide. Velocity and acceleration of the cab mutation have a greater impact on value. Lead to deterioration of the cab ride. Although most of the impact of block rubber pads on both the buffer. Has some flexibility, but an impact angle of exposure it is called rigid limit structure 00 connecting the upper and lower limit block - D-\ [j cab playing. Die Stem shame --- +0 l1 £ / 00 Figure 1 Side view of a typical system of rigid limit structure of the flexible suspension system consists of limit elastic element, damping components and rod, whose principle is shown in Figure 2. Two points A and A figure for the cab suspension, tie rod and the cab of the three connection points, and the tie rod connection point with the frame,[link widoczny dla zalogowanych], on behalf of two points A and A cab to ask the stiffness values K on behalf of two and asked the chassis stiffness, K bared for the tie rod assembly of the axial stiffness - a + - a - a - a a + a + * +-+--+- - - a - a - a - a + * - a - a - a - ten --- a - + a + - a - a - a - * + a - a - a - a - a + a + a - a - a - a --- a +-+---- a + - a - a - a - a - * - A - * - Aerospace University Press. 2003. [3] JeanJLabrosse. Embedded real time operating system p, C / OS-II [M]. Beijing: Beijing Aeronautics and Astronautics Press. 2003. StudyofDigitalDashboardBasedonpLC / OS-HDAIFang-quan, WANGJian · 46 · (BeiHangUniversity, Beijing100083,[link widoczny dla zalogowanych], China) Abstract: Thispaperintroducedadigitaldashboardbasedonreal-timeoperationsystem (RTOS) p, C/OS-IIinMCS-51platform. Thispaperdescribedthefunctionstructureofthedashboard, hardwaredesigning,[link widoczny dla zalogowanych], andprovidedthecircuitforreference. Moreover, itspentmuchtextonanalyzingthedesigningandoperatingoftasks. Keywords: dashboard; RTOS; v ~ C / OS-II; CANbus
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