mbt shoes sale Redundant Launch Vehicle Guidance S

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Redundant Launch Vehicle Guidance System Design Technology

Table 1, where Shí 【,[link widoczny dla zalogowanych], Peng 2, Village 3 for the three signal values. 2.3 Redundancy Management redundant computer guidance system relies on computer software, redundancy management,[link widoczny dla zalogowanych], while using the necessary hardware as auxiliary equipment. Redundancy management software generally managed mainly by the synchronization block, the computer redundancy management module, redundant management module used to test devices, guidance information output management block, fault isolation alarm block. Redundant management interface block, redundant management interface module Q between blocks as shown in Figure 6. 2 l3 aerospace control eight devices GI FI any two input or no input device used to measure at least two devices cl cJ digital machine functioning Fl l-channel output device or a device used to measure three sets of digital machines without GI cl two sets of figures machines prince Yu 5 FI reliability of a digital machine diagram form IORFI criteria malfunction of the channel digital output device l Gl Gl any two sets of three output device output device output device system of a normal FI shall determine the value of even the failure Optimization of numerical fMI-M2J c, JM3 a M2l (e.1MI-M3J> eMIM = (M2 + M3) / 2JM1 a M2J> eJM3 a M2J> e, JMI-M3J e. 1M1 a l \First, run the sync manager. Synchronization with the previous cycle management information block generated fault isolation fault isolation information together to give redundant management interface subroutine,[link widoczny dla zalogowanych], a system fault status table. b If the channel Arrow machine to work properly, the sensor redundancy management routines for processing the sampled data, if the arrows of a channel malfunction, the computer output information is prohibited. c. Guidance information output management routines used to monitor the guidance, navigation calculations, using the voting mechanism to select the correct result output, while providing fault diagnosis and isolation information. d. Fault isolation and alarm procedures used to collect monitoring information redundancy management routines, resulting in a failure every 14. . Second, Zhu vase. Hang circle 'L - Lily write-__ prince Yu 6, 1998, Phase 2 is from the word aerospace control, an alarm signal. 2.4 Synchronization of computer communications and computer communications redundant guidance system require fast, efficient,[link widoczny dla zalogowanych], reliable and easy to manage. A better way is to open up shared storage area, it can greatly improve the communication speed of information transmission and other lines in the layout of options to be studied. Synchronization problem is to ensure that redundant systems to work the most important issue, only to achieve the synchronization of data collected for each channel and output the results have comparable data makes sense to vote. Common methods to solve this problem are: a. Hardware synchronization. Synchronization is achieved by the computer clock source, the channel share a clock. There is a general computer clock and a crystal oscillator circuit, if the crystal fails, the computer system will stop working. Crystal oscillator circuit to improve reliability, while meeting the requirements of synchronization can be used in parallel mode crystal (Fig. 7). Factory _] Wong - IIl beetle l - l II _ = Lu Figure 7b. Flex, a soft-based. Start the computer in each frame,[link widoczny dla zalogowanych], the synchronous management procedures, in various synchronous signals sent between the processors to force the computer into sync. 3 Conclusion In this paper, two kinds of redundancy can be used for rocket guidance systems, they have their own advantages and disadvantages, and some high cost, size and weight, but high reliability. Some need to design a dedicated switch device, but the cost is relatively low. This as a reference, according to the requirements of the system redundancy, in practice, we can form double-platform, Shuangjie Alliance, the main platform from the back strap, three platforms and other forms of system redundancy structure.
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