公开(公告)号：US07800321B2

公开(公告)日：2010-09-21

申请号：US11857025

申请日：2007-09-18

申请人： Otto Knittel ,  Michael Kriener

发明人： Otto Knittel ,  Michael Kriener

IPC分类号： H02K27/00 ,  H02P1/24 ,  H02P3/18 ,  H02P25/10

CPC分类号： H02P7/0094 ,  G01P3/48 ,  H02P7/04

摘要： In a method for the detection of the rotational position of the rotor of a DC motor with commutator by evaluating the time development of a rotor current signal of the DC motor, said signal comprising a periodic waviness around an average value and comprising current ripples generated by commutation which are superimposed to said waviness, the rotor current signal of a current ripple detector unit (30) is supplied for detecting the current ripples of the rotor current signal. The rotor current signal is further supplied to a waviness detector unit (34) for detecting a half or full wave of the rotor current signal. The current ripple detector unit (30) is arranged to output a current ripple pulse for each detected current ripple. The waviness detector unit (34) is arranged to output a waviness pulse for each period of the waviness. The output signals of both detector units (30,34) are supplied to a logic OR unit (38) for generating a logic signal. Within a period of the rotor current signal, at least one of the detector units (30,34) will output a pulse. Thereby, the logic signal comprises a logic pulse for each period of the rotor current signal.

摘要翻译： 在通过评估直流电动机的转子电流信号的时间发展来检测具有换向器的直流电动机的转子的旋转位置的方法中，所述信号包括围绕平均值的周期性波动，并且包括由 叠加到所述波纹的换向，电流纹波检测器单元（30）的转子电流信号被提供用于检测转子电流信号的电流纹波。 转子电流信号进一步提供给波纹检测器单元（34），用于检测转子电流信号的一半或全波。 电流纹波检测器单元（30）被布置成针对每个检测到的电流纹波输出电流纹波脉冲。 波纹检测器单元（34）布置成在波纹的每个周期输出波纹脉冲。 两个检测器单元（30,34）的输出信号被提供给用于产生逻辑信号的逻辑或单元（38）。 在转子电流信号的时段内，检测器单元（30,34）中的至少一个将输出脉冲。 因此，逻辑信号包括转子电流信号的每个周期的逻辑脉冲。

公开(公告)号：US20080079380A1

公开(公告)日：2008-04-03

申请号：US11857025

申请日：2007-09-18

申请人： Otto Knittel ,  Michael Kriener

发明人： Otto Knittel ,  Michael Kriener

IPC分类号： H02P7/06 ,  B60H1/00

CPC分类号： H02P7/0094 ,  G01P3/48 ,  H02P7/04

摘要： In a method for the detection of the rotational position of the rotor of a DC motor with commutator by evaluating the time development of a rotor current signal of the DC motor, said signal comprising a periodic waviness around an average value and comprising current ripples generated by commutation which are superimposed to said waviness, the rotor current signal of a current ripple detector unit (30) is supplied for detecting the current ripples of the rotor current signal. The rotor current signal is further supplied to a waviness detector unit (34) for detecting a half or full wave of the rotor current signal. The current ripple detector unit (30) is arranged to output a current ripple pulse for each detected current ripple. The waviness detector unit (34) is arranged to output a waviness pulse for each period of the waviness. The output signals of both detector units (30,34) are supplied to a logic OR unit (38) for generating a logic signal. Within a period of the rotor current signal, at least one of the detector units (30,34) will output a pulse. Thereby, the logic signal comprises a logic pulse for each period of the rotor current signal.

摘要翻译： 在通过评估直流电动机的转子电流信号的时间发展来检测具有换向器的直流电动机的转子的旋转位置的方法中，所述信号包括围绕平均值的周期性波动，并且包括由 叠加到所述波纹的换向，电流纹波检测器单元（30）的转子电流信号被提供用于检测转子电流信号的电流纹波。 转子电流信号进一步提供给波纹检测器单元（34），用于检测转子电流信号的一半或全波。 电流纹波检测器单元（30）被布置成针对每个检测到的电流纹波输出电流纹波脉冲。 波纹检测器单元（34）布置成在波纹的每个周期输出波纹脉冲。 两个检测器单元（30,34）的输出信号被提供给用于产生逻辑信号的逻辑或单元（38）。 在转子电流信号的时段内，检测器单元（30,34）中的至少一个将输出脉冲。 因此，逻辑信号包括转子电流信号的每个周期的逻辑脉冲。

公开(公告)号：US5333368A

公开(公告)日：1994-08-02

申请号：US972951

申请日：1992-11-06

申请人： Michael Kriener ,  Johannes Uhlenbrock ,  Larry A. Wilkerson ,  Richard N. Roslund, Jr.

发明人： Michael Kriener ,  Johannes Uhlenbrock ,  Larry A. Wilkerson ,  Richard N. Roslund, Jr.

IPC分类号： A47C1/024

CPC分类号： A47C1/024 ,  A47C1/026 ,  A47C7/441 ,  A47C7/443

摘要： An office-type chair having a base, a cantilevered pedestal assembly projecting upwardly from substantially a center of the base, and a seat/back arrangement connected to an upper end of the pedestal assembly. The seat/back arrangement includes a generally horizontally enlarged seat assembly and a back assembly projecting upwardly from and adjacent a rear edge of the seat assembly. The seat/back arrangement also includes a rear tilt control mechanism for normally permitting the seat/back arrangement to be vertically tilted rearwardly against the urging of a resilient biasing element away from a normal upright position into a rearwardly tilted position. A front tilt mechanism cooperates between the pedestal assembly and the seat assembly for permitting the entire seat/back arrangement to be vertically tilted forwardly away from the normal upright position so that the seat assembly declines in a forward direction. The forward tilt mechanism is independent of the rear tilt control.

摘要翻译： 一种办公椅，其具有基座，从基座的大致中心向上突出的悬臂式基座组件，以及连接到基座组件的上端的座/背布置。 座椅/背部布置包括大致水平放大的座椅组件和从座椅组件的后边缘向上突出并邻近座椅组件的后边缘的后部组件。 座椅/背部布置还包括后倾控制机构，用于通常允许座椅/靠背装置克服弹性偏压元件远离正常直立位置向后倾斜的位置向后垂直倾斜。 前倾斜机构在基座组件和座椅组件之间协作，以允许整个座椅/靠背装置垂直地向前倾斜地偏离正常的直立位置，使得座椅组件向前倾斜。 前倾机构与后倾控制无关。