The invention discloses an electric proportional brake valve limiting method and system, and relates to the field of electric proportional brake valve.The limiting method comprises the steps that the hydraulic pressure of hydraulic oil is obtained, and the receiving condition of a zero position signal generated when a lead screw is located at the zero position at the current moment is obtained; the method comprises the following steps: acquiring input current and feedback current of a motor in each period in real time according to the maximum point position of a lead screw and the receiving condition of a maximum point position signal generated when the lead screw is located at the maximum point position so as to obtain the motor current of the current period, and further obtaining accumulated current and effective current according to each motor current; the hydraulic pressure, the receiving condition of the zero point position signal, the receiving condition of the maximum point position signal, the input current, the accumulated current and the effective current are integrated, the position and the motion state of the lead screw are judged, then the motor is controlled to keep running or stop running, the stroke range of the lead screw is limited, and faults such as clamping stagnation of the lead screw and damage to the motor are avoided.
本发明公开一种电比例刹车阀限位方法及系统,涉及电比例刹车阀控制领域,限位方法包括:获取液压油的液压压力,以及获取当前时刻丝杆位于零点位置时产生的零点位置信号的接收情况,及丝杆位于最大点位置时产生的最大点位置信号的接收情况,实时采集各个周期中电机的输入电流及反馈电流,进而得到当前周期的电机电流,进一步地,根据各电机电流,得到累计电流及有效电流,综合液压压力、零点位置信号的接收情况、最大点位置信号的接收情况、输入电流、累计电流、有效电流,判断丝杆的位置和运动状态,进而控制电机保持或停止运行,对丝杆的行程范围进行限制,避免了丝杆卡滞,电机损坏等故障发生。
Electric proportional brake valve limiting method and system
一种电比例刹车阀限位方法及系统
2023-05-09
Patent
Electronic Resource
Chinese
Zero setting method for electric proportional brake valve
European Patent Office | 2023
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