摘要
为提高可靠性,运载火箭大量采用冗余设计技术,三冗余并行工作的模式是应用较为普遍的设计之一。在其中,同步控制技术是必须关注的要点,不同步会导致冗余部件之间状态不一致,进而影响表决功能。介绍了不同步产生的原因及其对系统的影响,提出了几种针对性的解决措施,包括量化误差的控制、周期同步技术、指令同步技术、输入/输出同步技术等,采用软硬件设计相结合的方法,有效地提高了冗余部件之间的同步性,在载人运载火箭中得到了成功的应用。
The redundant design is used in launch vehicle to increase reliability, and concurrent TMR is generally applied. Under these circumstances, synchronization control is the key problem to be resolved. This paper illustrates the causes of non-synchronization and its impacts that will have on the voting functions due to the non-consistent state of redundant components. The paper brings forward several solutions combining hardware and software design, such as quantized error control, periodic synchronization, instructions synchronization and I/O synchronization technology, which have been testified by manned space flight and proved to be capable of efficiently increasing the synchronism between the redundant units.
出处
《载人航天》
CSCD
2013年第2期11-16,37,共7页
Manned Spaceflight
关键词
同步控制
运载火箭
冗余设计
周期同步
指令同步
Synchronization Control
Launch Vehicle
Redundant Design
Periodic Synchronization
Instructions Synchronization
