无传感器测深技术研究

针对现有的悬杆测深技术存在水面信号获取准确性差,水底信号触发装置机械结构复杂或受测流环境干扰明显等问题,对通过模拟量电压识别水面信号和通过电机输出扭矩的变化得到水底信号的无传感器测深技术进行了研究,设计了基于Arduino平台的根据空气和水中电阻率不同获取水面信号的方案。利用ANSYS/LS-DYNA分析了碰撞过程并得出碰撞过程中悬杆加速度变化趋势和碰撞瞬间电机输出扭矩变化趋势,通过PLC监测伺服单元反馈模拟量变化值准确得到水底信号。实践证明,该技术能准确测深,已用于黄委中游水文水资源局各水文站的缆道吊箱测流系统。

汽车整合式电子驻车制动钳(MOC)驻车设计研究浅谈

介绍汽车整合式电子驻车制动钳(MOC)驻车原理与驻车结构设计,包括电子驻车制动钳驻车结构简介、制动钳驻车工作过程、制动钳驻车机构受力分析、电机输出扭矩计算及校核,并对驻车工作电流进行了校核,为汽车整合式电子驻车制动钳(MOC)的驻车正向设计提供参考。

Output Speed and Torque of Differential Double-Stator Swing Hydraulic Multimotors

A new type of differential double-stator swing hydraulic motor, based on double stator structure, was introduced. Compared with the traditional swing hydraulic motors, it could provide various kinds of rotational speeds and torques under the same conditions of input flow rate and pressure. The operating prindple and graphic symbols were described. The output speed and torque characters in multifarious connection modes were analyzed through single-acting differential double-stator swing hydraulic multi-motors. Then the differential connection modes and differential principles of differential double-stator swing hydraulic multi-motors were stated. Furthermore, the output speed and torque characters of double- acting and triple-acting ones in multifarious connection modes were gotten. The interaction between output torque and the displacement ratio was studied. Finally, the internal leakage that influenced the volumetric efficiency was researched. The theoretical and experimental researches show that the differential double-stutor swing hydraulic multi-motors can provide various kinds of rotational speeds and torques. Predictably, this new kind of swing hydraulic multi-motors has broad application prospects in machine tool equipments, engineering machineries, and simulation turntables.

常规电机和高转差电机变速运行试验研究

为了进一步提高应用游梁式抽油机变速运行控制技术的性价比,在模拟试验井进行了常规Y系列电机和高转差电机应用变速运行控制技术前后电机输入功率和电机输出轴扭矩测试试验。从电机输入功率、节电率、电机输出轴扭矩等方面,对比分析了两种电机应用变速运行控制技术前后功率和扭矩的变化情况。测试结果表明,采用变速运行控制技术后,常规Y系列电机综合节电率在14%以上,高转差电机的综合节电率在12%以下,两种电机输入功率峰值降低40%以上,扭矩峰值降低20%以上。游梁式抽油机变速运行控制技术与常规Y系列电机组合应用性价比较好,既能达到节能、降低电机输出轴扭矩的效果,又能达到节约成本的目的,为油田更好地应用节能控制技术提供了可靠依据。