论文部分内容阅读
迄今为止所提出的大多数故障安全系统是由一个三模或双模冗余结构级联一个故障安全接口所构成的 .为使得整个故障安全系统具有并发差错检测和定位能力 ,有一些系统使用了自校验的冗余模块 .用于三模冗余结构的故障安全表决器能够屏蔽单个模块的差错 ,但用于双模冗余结构的故障安全接口一般不具有纠错能力 .为解决这一问题 ,提出了一个称为交替互补转换器的故障安全接口的门级电路方案 ,它只要求两个冗余模块的输出构成交替互补矢量 ,且冗余模块无须是自对偶实现的 .这种故障安全系统能够纠正单个冗余模块所产生的单固定型差错 .交替互补转换器通过了Active-VHDL的门级模拟验证 .另外 ,还估计了它的硬件复杂性和传输延迟 .
Most of the fail-safe systems that have been proposed so far consist of a fail-safe interface in cascade with a three-mode or dual-mode redundant structure.To make the total fail-safe system have concurrent error detection and localization capabilities, some have been used Self-verifying redundant modules. Fail-safe voting for triple-mode redundant structures shields individual module errors, but fail-safe interfaces for dual-mode redundant structures generally do not have error correction capability. To address this Problem, a gate-level scheme of fail-safe interfaces called Alternate Complementary Converters has been proposed that requires only that the outputs of the two redundant blocks form an alternating complement of complementary vectors and that redundant blocks do not have to be self-dual. The safety system is capable of correcting single-fixed errors generated by a single redundant module, and the alternant complementary converter passed the gate-level simulation verification of Active-VHDL, as well as its hardware complexity and propagation delay.