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    • 2. 发明申请
    • MULTI-PHASE MOTOR CONTROL METHOD AND DEVICE USING THE SAME
    • 多相电动机控制方法和使用该装置的装置
    • US20150069940A1
    • 2015-03-12
    • US14461918
    • 2014-08-18
    • Kuo-Chung LeeWei-Hsu ChangAn-Tung ChenChun-Wen Wang
    • Kuo-Chung LeeWei-Hsu ChangAn-Tung ChenChun-Wen Wang
    • H02P6/00
    • H02P6/182H02P6/15H02P6/18
    • A multi-phase motor control method controls a multi-phase motor which includes multiple nodes respectively receiving a corresponding number of driving voltage signals to control a rotation of a rotor. The motor control method includes: sensing a signal phase of a current signal corresponding to at least one node, for example by sensing a zero-crossing point of the current signal; determining a reference phase for the current signal; calculating a phase difference between the signal phase and the reference phase; and controlling a phase switching frequency of the stator according to the phase difference, such that the signal phase is close to or in phase with the reference phase, to thereby obtain an optimum rotation speed of the rotor corresponding to a given driving voltage. The present invention also provides a multi-phase motor control device using the motor control method.
    • 多相电动机控制方法控制多相电动机,其包括分别接收相应数量的驱动电压信号以控制转子的旋转的多个节点。 电动机控制方法包括:例如通过感测当前信号的过零点来感测与至少一个节点对应的电流信号的信号相位; 确定当前信号的参考相位; 计算信号相位和参考相位之间的相位差; 以及根据所述相位差来控制所述定子的相位切换频率,使得所述信号相位与所述基准相位接近或相位,从而获得对应于给定驱动电压的转子的最佳转速。 本发明还提供一种使用电动机控制方法的多相电动机控制装置。
    • 7. 发明授权
    • Moisture and contaminant separator for compressed air
    • 用于压缩空气的水分和污染物分离器
    • US5746791A
    • 1998-05-05
    • US794640
    • 1997-02-03
    • Chun-Wen Wang
    • Chun-Wen Wang
    • B01D53/26B01D59/50B01D51/00
    • B01D53/265Y10S55/17
    • A moisture and contaminant separator for compressed air includes: an outer cylinder having an upper mist accumulator and a lower water collector; and an inner cylinder secured in a central portion of the outer cylinder having an impinging condenser formed in the inner cylinder provided with a plurality of leftward and rightward oriented air passages in the impinging condenser to allow the crossing impact, impinging, mixing, settling and condensation of water mist or contaminant particles laden in the compressed air stream into the separator to be dropped and collected in the lower water collector of the outer cylinder; upon the primary removal of water and contaminants from the compressed air stream, the mist still carried on the air stream will be accumulated on the inside wall of the upper mist accumulator and then drained into the lower collector for further removal of the mist and contaminants laden in the air; and the demisted dry air will be delivered outwardly through an upper port.
    • 用于压缩空气的水分和污染物分离器包括:具有上雾剂和下集水器的外筒; 以及固定在所述外筒的中心部分中的内筒,其具有形成在所述内筒中的冲击冷凝器,所述内筒在所述冲击冷凝器中设置有多个向左和向右定向的空气通道,以允许所述交叉冲击,撞击,混合,沉降和冷凝 将水雾或污染物颗粒装载在压缩空气流中进入分离器,以将其滴落并收集在外筒的下部集水器中; 在从压缩空气流中首先除去水和污染物时,仍然携带在空气流上的雾将积聚在上部雾状蓄积器的内壁上,然后排放到下部收集器中,以进一步除去雾气和污染物 在空中; 并且干燥的干燥空气将通过上端口向外传送。