电动摩托车用差速电机噪声分析与抑制技术的研究

针对电动摩托车用强制风冷型差速电机的噪声问题,提出了电动摩托车用永磁无刷直流差速电机噪声抑制技术的研究思路。首先通过大量试验数据,分析和验证了该类电机的噪声产生机理主要为气动噪声;其次,从单极源、偶极源和四极源的特性出发,阐述了该类电机由于风扇叶片和气道设计不合理而引起的气动噪声的产生过程;最后,分析了旋转声源的辐射特性,从旋转叶片的辐射噪声计算公式和特性出发探讨电动摩托车用差速电机气动噪声改进的具体方法和抑制措施。

澳玛科技:强劲推出三轮车专用的高速中置-差速电机

位于江苏省常州市芙蓉镇，以开发、生产电动车电机及控制器为主业的常州澳玛科技有限公司，近年来凭借企业在电动车电机生产中所积累的丰富经验及雄厚技术力量（拥有一支高级工程师领衔的科技人才队伍），不断加强新产品的开发力度.

电动手术交换车的研制

目的研制一种电动手术交换车,使其在工作人员的控制下自动行驶,以节省工作人员的体力。方法在普通手术交换车上安装电动装置,并对电动装置进行调试,以满足实际需要。结果该电动手术交换车在工作人员的控制下能自动行驶,并且可以根据不同路况对行驶速度进行适当调整。结论该电动手术交换车投入使用后,能有效地减少工作人员的体力消耗,提高运送病人的安全性。

基于三次函数的电磁导航智能小车设计

为了实现智能小车稳定快速的自动寻线,采用了"五横二竖加八字"排列的电磁线圈,能识别各种复杂的赛道。通过三次函数算法求出偏差,并采用差速电机算法处理弯道,实现了电磁导航的功能。实践证明,该系统能精准地控制智能小车稳定快速地运行,且达到了预期效果。

旋盖机适用多螺距瓶盖的传动设计

为了满足饮料生产线的多样化包装需求,一台旋盖机需要柔性兼容多种塑料盖的旋盖封口。项目组在传统塑料盖旋盖机[1]的固定齿轮传动基础上,深入研究和计算,结构设计上增加差速电机,引入行星齿轮传动,使旋盖头的自转转速能够增速或减速,达到在一台旋盖机上,对不同螺距的盖子进行封盖。结果表明,新设计的旋盖机行星齿轮传动,在PLC程序控制下可以带动旋盖头的自动调节转速,以匹配不同瓶盖的下降螺距,从而满足不同瓶盖的封口要求。

Research on Hybrid Input Mechanical Press Driven by Two Motors

Given the speed requirements of a mechanical press slider, a differential gear train is adopted instead of the belt and gear drive of a general mechanical press. Two electric motors are used to drive the differential gear train with hybrid input. Based on the working principle of a differential gear train, the angular speed equations and the power dis- tribution equations of the input-output system are established. By controlling the angular speeds of the two motors, the slider can move at different speeds. Taken a JH23-100 type mechanical press as example, the driving system is designed and the power of two motors determined. The simulated results show that the highest slider speed in the mechanical press approaches 39 mm/s only at the forging-punching stage, far less than the 232 mm/s of a general JH23-100 type mechanical press. This provides a new scheme to realize low-speed forging-punching technology from a mechanical press.

Dynamic balancing of dual-rotor system with very little rotating speed difference

Unbalanced vibration in dual-rotor rotating machinery was studied with numerical simulations and experiments. A new method is proposed to separate vibration signals of inner and outer rotors for a system with very little difference in rotating speeds. Magnitudes and phase values of unbalance defects can be obtained directly by sampling the vibration signal synchronized with reference signal. The balancing process is completed by the reciprocity influence coefficients of inner and outer rotors method. Results showed the advantage of such method for a dual-rotor system as compared with conventional balancing.

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.