公开(公告)号：US07265538B2

公开(公告)日：2007-09-04

申请号：US10660910

申请日：2003-09-12

申请人： Marc Micke ,  Holger Sievert ,  Juergen Hachtel ,  Guenther Hertlein

发明人： Marc Micke ,  Holger Sievert ,  Juergen Hachtel ,  Guenther Hertlein

IPC分类号： G01P3/46

CPC分类号： G01P3/48 ,  G01P3/44 ,  H02P7/00 ,  H02P7/0094

摘要： A method and a device for measuring the speed of a pulse-activated electric motor are described. According to this method, the motor is fully activated at time intervals to be determined for a defined measuring time by the circuit element provided for timing and, in this time, the frequency of the current ripples, which is proportional to the motor speed, is measured. A current-proportional voltage measuring device is located on the circuit element, on whose load side are located an amplifier, filters, and an evaluation circuit in the form of a comparator for determining the frequency of the current ripples flowing in a measured phase during which the motor is fully activated.

摘要翻译： 描述用于测量脉冲激活电动机的速度的方法和装置。 根据该方法，电动机以时间间隔被完全启动，通过为定时提供的电路元件确定定义的测量时间，并且此时，与电动机速度成比例的电流波纹的频率为 测量。 电流比例电压测量装置位于电路元件上，其负载侧位于放大器，滤波器和比较器形式的评估电路，用于确定在测量相位期间流动的电流波纹的频率， 电机完全启动。

公开(公告)号：US07083391B2

公开(公告)日：2006-08-01

申请号：US10662827

申请日：2003-09-15

申请人： Holger Sievert ,  Juergen Hachtel ,  Guenther Hertlein

发明人： Holger Sievert ,  Juergen Hachtel ,  Guenther Hertlein

IPC分类号： F04B49/06

CPC分类号： F04C14/08 ,  B60T8/4059 ,  F04B51/00 ,  F04B2201/1201 ,  F04B2203/0209 ,  F04B2205/05 ,  F04C2270/18 ,  F04C2270/80 ,  G01P3/26 ,  G01P3/28 ,  G01P3/48 ,  G01P3/489

摘要： A method and a system for detecting the speed of a pump motor of a hydraulic pump system are provided, in which pump system a pump is driven by a pump motor to deliver hydraulic fluid into a pump reservoir. In accordance with the present invention, a pressure signal representing the fluid-delivery activity of the pump is detected, and the pressure peaks within this pressure signal identified. The speed of the pump motor is determined on the basis of the frequency or the time intervals of these pressure peaks.

摘要翻译： 提供了一种用于检测液压泵系统的泵马达的速度的方法和系统，其中泵系统由泵马达驱动泵将液压流体输送到泵储存器中。 根据本发明，检测表示泵的流体输送活性的压力信号，并且在该压力信号中识别压力峰值。 基于这些压力峰值的频率或时间间隔来确定泵马达的速度。