【摘要】 提出了一种基于嵌入式实时操作系统μC/OS-Ⅱ和CPLD的SSPC设计方案。对整个系统的结构进行了分析,结合分析给出了系统硬件和软件设计方案。硬件设计部分给出了系统的硬件结构原理图,分析了系统性能和各部分功能,并给出了子系统的设计;软件部分根据μC/OS-Ⅱ系统建立了任务结构框图和系统流程,给出了I2T反时限保护的一种算法,并通过对CPLD的编程实现SSPC的短路保护功能;实验证明这种设计方案具有硬件电路设计简单、实时性好、可靠性高和智能化水平高的优点,符合航空直流固态功率控制器的设计要求。更多还原

【Abstract】 A designed scheme of solid-state power controller(SSPC) is bringed forward based on the real-time embedded operating system μC/OS-Ⅱ and CPLD.A analysis will be made about the whole system structure,and the software and hardware design will be given based on the analysis.Hardware design gives the system’s hardware schematics,analysis of system performance and functions of every parts,and the design of subsystems.Software design gives the mission structure and system flow diagram and a I2T inverse time-lag current protection algorithm.Then the design realizes the function of short-circuit protection through CPLD program.The related experiments prove that this designed scheme has many advantages,includes the simple circuit design,fast time response & high reliability,high Intelligence.It meets the requirements of SSPC.更多还原