软硬件冗余矿井提升机恒减速制动系统研制

安全制动系统是提升设备的最后一道安全保障措施，其对提升机运行的安全性和可靠性具有重要意义。针对目前恒减速制动系统存在的不足之处，提出了一种基于软硬件冗余的恒减速制动系统改进方案。为了提高系统安全性和可靠性，在回路中采用了冗余热备用方法，使备用回路能够实时同步地替换故障回路。空载实验结果表明：该方案是可行的；由于受非线性、时变和延迟等因素影响，制动初期速度误差略大于制动末期误差。

Development of Mine Hoist Constant-deceleration Emergency Braking System with Software and Hardware Redundant Design

Constant-deceleration emergency braking system was considered as the ultimate security measure of a mine hoist. It was of great significance for safety and reliability of the mine hoists. Aiming at the shortcomings of the present constant-deceleration emergency braking system, a constant-deceleration emergency braking system was presented herein based on software and hardware redundant design. In this system, the faulty circuit was replaced synchronously in real-time by the spare one because the hot spare was adopted in the redundant design. The numerical and experimental results under unloade show that the scheme is feasible. They also show that the speed tracking error at the early stages is higher than that at the last stages because of the nonlinearity, time-varying and delay.