In order to solve the problems of logic controlling in large components posture alignment system, such as the reliability of drive circuit, the stability of hydraulic and pneumatic, the error handling of the system, the logic controller based on field programmable gate array (FPGA) was designed and realized. The configuration design of the controller's hardware including processor module, input-and-output module, power module was focused on. Meanwhile, logical control programming was also realized using VHSIC hardware description language (VHDL). The application result shows that the logic controller is reliable, easy to maintain, suitable for digital electronic control system of complex logical relationship.%为解决大部件刚体调姿系统中各数控设备驱动电路的可靠性、各辅助工装设备的稳定性、系统的容差保护与报错等问题,设计并开发了基于现场可编程门阵列(FPGA)的逻辑控制器.重点从处理器模块、I/0模块、电源模块等方面对逻辑控制器进行了硬件结构设计,同时给出了基于硬件描述语言(VHDL)的软件实现方法.应用实践结果表明,该逻辑控制器可靠性高,维护方便,有很强的可扩展性,适用于逻辑关系复杂的数字电控系统.
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