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    • 7. 发明授权
    • Optical encoder device comprising a moveable slit plate and a stationary slit plate
    • 光学编码器装置,其包括可移动狭缝板和固定狭缝板
    • US08389925B2
    • 2013-03-05
    • US12921259
    • 2009-03-06
    • Yoshihiro ShojiYoshi IshizukaShoji Ito
    • Yoshihiro ShojiYoshi IshizukaShoji Ito
    • G01D5/34
    • G01D5/34746
    • An optical encoder device is provided, in which the number of light transmissive slits of a stationary slit plate can be increased as much as possible according to the length of a light receiving surface of a light receiving element to produce an output signal with little distortion. A movable slit plate 3 includes a slit row R1 in which a plurality of light transmissive slits (light transmissive portions) S1 each having a slit width of 180° in terms of electrical angle and a plurality of light non-transmissive slits (light non-transmissive portions) S2 each having a slit width of 180° in terms of electrical angle are alternately formed. A stationary slit plate 4 includes a slit row R2 in which a plurality of light transmissive slits S3 each having a slit width of 180° in terms of electrical angle and a plurality of light non-transmissive slits S4 each having a slit width of (360Xk-180)° in terms of electrical angle are alternately formed. k is a value that satisfies k=1±(⅓n) where n denotes the number of the light transmissive slits S3.
    • 提供一种光学编码器装置,其中可以根据光接收元件的光接收表面的长度尽可能地增加固定狭缝板的透光狭缝的数量,以产生具有很小变形的输出信号。 可动狭缝板3包括狭缝列R1,其中多个透光狭缝(透光部)S1以电角度为单位具有180°的狭缝宽度和多个光不透光狭缝(光非透明部分) 交替地形成各自具有电角度为180°的狭缝宽度的透光部)S2。 固定狭缝板4包括狭缝列R2,其中多个透光狭缝S3分别具有电角度为180°的狭缝宽度和多个狭缝宽度为(360Xk)的不透光狭缝S4 -180)°电角度交替形成。 k是满足k = 1±(1 / nn)的值,其中n表示透光狭缝S3的数量。
    • 8. 发明授权
    • Magnetic absolute encoder
    • 磁力绝对编码器
    • US08358124B2
    • 2013-01-22
    • US12948158
    • 2010-11-17
    • Shigeharu KatouKazuhiro MakiuchiShoji ItoTooru MiyajimaTomohito YamazakiToshiaki AyuzawaMasato Matsuda
    • Shigeharu KatouKazuhiro MakiuchiShoji ItoTooru MiyajimaTomohito YamazakiToshiaki AyuzawaMasato Matsuda
    • G01B7/30
    • G01D5/04G01D5/2013
    • A magnetic absolute encoder with enhanced resolution is provided. A first cycle determining section 27 utilizes data stored in a fourth angle data storing section 23 to determine in which cycle of m cycles of the fourth angle data, fifth angle data, which has been newly computed in response to rotation of a rotary shaft 1, occurs. A second cycle determining section 29 determines in which cycle of n cycles of first angle data that occur in first determined cycle, the newly computed fifth angle data occurs. A third cycle determining section 31 determines in which cycle of N1 cycles of the first angle data, the current first angle data occurs, based on the first determined cycle and second determined cycle. An absolute position determining section 33 determines the absolute position based on third determined cycle and the digital value of the current first angle data.
    • 提供了具有更高分辨率的磁性绝对编码器。 第一周期确定部分27利用存储在第四角度数据存储部分23中的数据来确定响应于旋转轴1的旋转而新计算的第四角度数据的第五角度数据的m个循环的周期, 发生。 第二周期确定部分29确定在第一确定周期中出现的第一角度数据的n个周期的哪个周期,发生新计算的第五角度数据。 第三周期确定部分31基于第一确定周期和第二确定周期来确定出现第一角度数据的N1周期的哪个周期,即当前第一角度数据。 绝对位置确定部分33基于第三确定周期和当前第一角度数据的数字值来确定绝对位置。
    • 9. 发明授权
    • Device and method for estimating physical quantity and device and method for ABS control
    • 用于估算物理量的装置和方法以及用于ABS控制的装置和方法
    • US06447076B1
    • 2002-09-10
    • US09407894
    • 1999-09-29
    • Shoji ItoEiichi OnoMasaru SugaiTakaji UmenoKatsuhiro AsanoHiroyuki YamaguchiSatoru Onozawa
    • Shoji ItoEiichi OnoMasaru SugaiTakaji UmenoKatsuhiro AsanoHiroyuki YamaguchiSatoru Onozawa
    • B60T860
    • B60T8/172
    • A wheel velocity signal for each wheel detected by a wheel velocity sensor is input to a bandpass filter. Signals from frequency bands unrelated to the unsprung resonance are then removed from the wheel velocity signal and only signals from frequency bands related to the unsprung resonance are output. A road surface &mgr; gradient estimation device uses an online identification method to identify an damping ratio of a second order resonance model similar to a suspension—tire resonance model from the signal output from the bandpass filter. The road surface &mgr; gradient is then estimated from the identified damping ratio. The damping ratio of the second order resonance model corresponds to the road surface &mgr; gradient in the following manner: when the damping ratio is identified as being small, the road surface &mgr; gradient is estimated as being large; and when the road surface &mgr; gradient is identified as being large, the damping ratio is estimated as being small.
    • 由车轮速度传感器检测到的每个车轮的车轮速度信号被输入到带通滤波器。 然后从不同于簧下共振的频带发出的信号从车轮速度信号中除去,并且仅输出与非簧下共振相关的频带的信号。 路面mu梯度估计装置使用在线识别方法从与带通滤波器输出的信号相似的悬挂轮胎共振模型中识别类似于二次谐振模型的阻尼比。 然后根据所识别的阻尼比估计路面μm梯度。 二次谐振模型的阻尼比以下列方式对应于路面μ0的梯度:当阻尼比被识别为小时,路面μ0的梯度被估计为较大; 并且当路面μm梯度被识别为大时,阻尼比被估计为小。