公开(公告)号：US20080154561A1

公开(公告)日：2008-06-26

申请号：US11979602

申请日：2007-11-06

申请人： Masaki Shiraishi

发明人： Masaki Shiraishi

IPC分类号： G06G7/70

CPC分类号： G06F17/5095 ,  B60C99/006 ,  G06F17/5018

摘要： A method for modeling a tire model used for a computer simulation of a pneumatic tire with a toroidal main body and a circumferentially extending tread pattern formed thereon, comprises a step for setting a three-dimensional main body model by dividing the main body by N (N is an integer not less than 2) equally in a circumferential direction of the tire using a finite number of elements a step for setting a three-dimensional pattern model by dividing the tread pattern by M (M is an integer greater than N) equally in the circumferential direction of the tire using a finite number of elements to make, a step for coupling the pattern model with the main body model while aligning each tire rotation axis to make a three-dimensional tire model, and a correcting step for moving nodal points existing on a radially outer surface of the pattern model such that a thickness of the pattern model measured from a radially outer surface of the main body model in a normal direction becomes constant.

摘要翻译： 一种用于对具有环形主体和形成在其上的周向延伸的胎面花纹的充气轮胎的计算机模拟的轮胎模型进行建模的方法包括通过将主体分割为N（N）而设置三维主体模型的步骤 N是不小于2的整数）使用有限数量的元件在轮胎的圆周方向上平均地通过将胎面花纹除以M（M是大于N的整数）来设置三维花纹模型的步骤 在使用有限数量的元件的轮胎的圆周方向上，在对准每个轮胎旋转轴线以制成三维轮胎模型的同时将图案模型与主体模型耦合的步骤，以及用于移动节点的校正步骤 存在于图案模型的径向外表面上的点，使得从正常方向的主体模型的径向外表面测量的图案模型的厚度变得恒定。

公开(公告)号：US20070137290A1

公开(公告)日：2007-06-21

申请号：US11635605

申请日：2006-12-08

申请人： Masaki Shiraishi

发明人： Masaki Shiraishi

IPC分类号： G01M17/02 ,  E01C23/00

CPC分类号： G06F17/5095 ,  B60C99/006 ,  G06F17/5018 ,  G06F2217/16

摘要： A method for pneumatic tire simulation comprises the steps of modeling a tire body having a cavity extending in a circumferential direction of the tire using finite elements to build a tire body model, modeling the cavity surrounded by the tire body using finite volumes to build a cavity model, setting a pneumatic tire model coupled the tire body model with the cavity model so that a relative distance between an outer surface of the cavity model and an inner surface of the tire body model does not change, modeling a road using finite elements to build a road model, and executing a numerical simulation in which the tire model is made to roll on the road model in a predetermined condition.

摘要翻译： 一种用于充气轮胎模拟的方法包括以下步骤：使用有限元件对具有在轮胎的圆周方向上延伸的空腔的轮胎主体进行建模，以构建轮胎主体模型，使用有限体积来建模由轮胎主体围绕的空腔以构建空腔 模型，设置将轮胎主体模型与腔模型耦合的充气轮胎模型，使得腔模型的外表面与轮胎主体模型的内表面之间的相对距离不变，使用有限元构建道路 道路模型，并且执行轮胎模型在预定条件下在道路模型上滚动的数值模拟。

公开(公告)号：US20070045727A1

公开(公告)日：2007-03-01

申请号：US11508860

申请日：2006-08-24

申请人： Masaki Shiraishi ,  Takayuki Iwasaki ,  Nobuyoshi Matsuura ,  Yoshito Nakazawa ,  Tsuyoshi Kachi

发明人： Masaki Shiraishi ,  Takayuki Iwasaki ,  Nobuyoshi Matsuura ,  Yoshito Nakazawa ,  Tsuyoshi Kachi

IPC分类号： H01L29/76

CPC分类号： H01L29/7802 ,  H01L29/0634 ,  H01L29/0696 ,  H01L29/086 ,  H01L29/0878 ,  H01L29/1095 ,  H01L29/402 ,  H01L29/42368 ,  H01L29/42372 ,  H01L29/4916 ,  H01L29/4933 ,  H01L29/518 ,  H01L29/66712 ,  H01L29/7806

摘要： A technology capable of realizing a MOSFET with low ON-resistance and low feedback capacitance, in which the punch through of a channel layer can be prevented even when the shallow junction of the channel layer is formed in a planar type MOSFET is provided. A P type polysilicon is used for a gate electrode in a planar type MOSFET, in particular, in an N channel DMOSFET.

摘要翻译： 提供了能够实现具有低导通电阻和低反馈电容的MOSFET的技术，其中即使在沟道层的浅结形成在平面型MOSFET中时也可以防止沟道层的穿通。 P型多晶硅用于平面型MOSFET中的栅电极，特别是在N沟道DMOSFET中。

公开(公告)号：US07149670B2

公开(公告)日：2006-12-12

申请号：US10245513

申请日：2002-09-18

申请人： Naoaki Iwasaki ,  Masaki Shiraishi ,  Akio Miyori

发明人： Naoaki Iwasaki ,  Masaki Shiraishi ,  Akio Miyori

IPC分类号： G06G7/48

CPC分类号： G06F17/5018 ,  B60C11/00 ,  B60C19/00 ,  B60C99/006 ,  G01M17/02 ,  G06F17/5095 ,  G06F2217/16

摘要： The present invention is a method for tire rolling simulation comprising the steps of: setting a tire model by modeling a tire with the use of elements capable of numerical analysis; setting a road surface model including a road-surface matter model formed by modeling road-surface matter forming a road surface with the use of elements that can be numerically analyzed and can cause a volume change due to compression which is substantially permanent; and performing a tire rolling simulation by making the tire model get in contact with the road-surface matter model, thereby providing the tire model with rotating conditions, and conducting deformation calculations of the tire model and the road-surface matter model at minute time increment intervals.

公开(公告)号：US07130782B2

公开(公告)日：2006-10-31

申请号：US10122327

申请日：2002-04-16

申请人： Akio Miyori ,  Masaki Shiraishi ,  Kazuhiro Fujisawa ,  Takahiro Sajima

发明人： Akio Miyori ,  Masaki Shiraishi ,  Kazuhiro Fujisawa ,  Takahiro Sajima

IPC分类号： G06G7/48 ,  A63B57/00 ,  A63B39/00 ,  A63B37/12 ,  A63B37/14

CPC分类号： G06F17/5018 ,  G06F2217/16

摘要： A gas flow simulation method includes setting an imaginary object model such as a sphere model having at least one concavity, convexity, groove or projection formed thereon by means of a computer. A spatial part on a periphery of the imaginary object model is set. A surface of the imaginary object model and the spatial part is divided into a large number of blocks to form a large number of latticed divisions by lattice points. A gas flows to the imaginary object model from one direction of the spatial part. A motion element of a flow of the gas in the spatial part for each latticed division or for each latticed point is computed, with the gas flowing in the spatial part and passing along the surface of the imaginary object model. The flow of the gas on the periphery of the imaginary object model is simulated.

摘要翻译： 气流模拟方法包括通过计算机设置诸如具有至少一个凹凸，凹槽或凸起的球体模型的假想物体模型。 设置虚拟对象模型的周边上的空间部分。 虚拟对象模型的表面和空间部分被划分成大量的块，以通过格点形成大量网格划分。 气体从空间部分的一个方向流到虚拟物体模型。 计算用于每个网格化分区或每个网格点的空间部分中的气体流动的运动元素，其中气体在空间部分中流动并沿着假想对象模型的表面传播。 模拟假想对象模型周边气体的流动。

公开(公告)号：US07089817B2

公开(公告)日：2006-08-15

申请号：US10443030

申请日：2003-05-22

申请人： Masaya Tsunoda ,  Masaki Shiraishi

发明人： Masaya Tsunoda ,  Masaki Shiraishi

IPC分类号： G01N19/00

CPC分类号： A63B47/008 ,  A63B37/0003 ,  G06F17/5018

摘要： A model (1) is obtained by dividing a golf ball into meshes. The model (1) comprises a large number of elements (3). An outermost layer of the model is wholly formed by fine elements (3a). The outermost layer is wholly formed by a fine element region. A number (Na) of divisions in the fine element region is larger than a number (Nb) of divisions on an inner layer in the fine element region. A ratio (Na/Nb) is 1.1 to 15.0. The fine element (3a) and an element (3b) on the inside of the fine element (3a) are tied to each other. A physical property value of the golf ball is analyzed by a finite element method using the model (1).

摘要翻译： 通过将高尔夫球分成网格来获得模型（1）。 模型（1）包括大量元素（3）。 模型的最外层完全由精细元件（3a）形成。 最外层由细小的元件区完全形成。 细元素区域中的分割数（Na）大于细小元素区域内层的分割数（Nb）。 比率（Na / Nb）为1.1〜15.0。 精细元件（3a）内部的微细元件（3a）和元件（3b）彼此连接。 使用模型（1）通过有限元法分析高尔夫球的物理属性值。

公开(公告)号：US07005834B2

公开(公告)日：2006-02-28

申请号：US10882672

申请日：2004-07-02

申请人： Takayuki Iwasaki ,  Kozo Sakamoto ,  Masaki Shiraishi ,  Nobuyoshi Matsuura ,  Tomoaki Uno

发明人： Takayuki Iwasaki ,  Kozo Sakamoto ,  Masaki Shiraishi ,  Nobuyoshi Matsuura ,  Tomoaki Uno

IPC分类号： G05F1/613 ,  G05F1/656

CPC分类号： H02M3/1588 ,  Y02B70/1466

摘要： In a power supply of a synchronous rectification type, the self-turn on phenomenon of MOSFET is suppressed without increase of the drive loss to thereby improve the power efficiency. In a synchronous rectifier circuit, a threshold value of a commutation MOSFET is made higher than that of a rectification MOSFET and particularly a threshold value of a commutation MOSFET 3 is made 0.5V or more higher than that of a rectification MOSFET 2. The threshold value of the rectification MOSFET 2 is lower than 1.5V and the threshold of the commutation MOSFET 3 is higher than 2.0V.

摘要翻译： 在同步整流型的电源中，不增加驱动损耗来抑制MOSFET的自转导通现象，从而提高功率效率。 在同步整流电路中，使换向MOSFET的阈值高于整流MOSFET的阈值，特别是使换向MOSFET 3的阈值比整流MOSFET2的阈值高0.5V以上。 整流用MOSFET2的阈值低于1.5V，换流用MOSFET3的阈值高于2.0V。

公开(公告)号：US20050007078A1

公开(公告)日：2005-01-13

申请号：US10882672

申请日：2004-07-02

申请人： Takayuki Iwasaki ,  Kozo Sakamoto ,  Masaki Shiraishi ,  Nobuyoshi Matsuura ,  Tomoaki Uno

发明人： Takayuki Iwasaki ,  Kozo Sakamoto ,  Masaki Shiraishi ,  Nobuyoshi Matsuura ,  Tomoaki Uno

IPC分类号： H02M7/21 ,  H02M3/155 ,  H02M3/158 ,  G05F1/652

CPC分类号： H02M3/1588 ,  Y02B70/1466

摘要： In a power supply of a synchronous rectification type, the self-turn on phenomenon of MOSFET is suppressed without increase of the drive loss to thereby improve the power efficiency. In a synchronous rectifier circuit, a threshold value of a commutation MOSFET is made higher than that of a rectification MOSFET and particularly a threshold value of a commutation MOSFET 3 is made 0.5V or more higher than that of a rectification MOSFET 2. The threshold value of the rectification MOSFET 2 is lower than 1.5V and the threshold of the commutation MOSFET 3 is higher than 2.0V.

摘要翻译： 在同步整流型的电源中，不增加驱动损耗来抑制MOSFET的自转导通现象，从而提高功率效率。 在同步整流电路中，使换向MOSFET的阈值高于整流MOSFET的阈值，特别是使换向MOSFET 3的阈值比整流MOSFET2的阈值高0.5V以上。阈值 的整流用MOSFET2的电压低于1.5V，换流用MOSFET3的阈值高于2.0V。

公开(公告)号：US06725168B2

公开(公告)日：2004-04-20

申请号：US10049596

申请日：2002-04-02

申请人： Masaki Shiraishi ,  Naoaki Iwasaki

发明人： Masaki Shiraishi ,  Naoaki Iwasaki

IPC分类号： G01M1702

CPC分类号： B60C19/00 ,  B60C99/006 ,  B60G2200/21 ,  B60G2206/20 ,  B60G2206/99 ,  G01M17/02 ,  G06F17/5018 ,  G06F17/5095

摘要： A simulating method for vehicle/tire performances which includes: a tire model preparing step (s1) of preparing a tire model of a tire including a ply made out of a finite number of elements; a vehicle body model preparing step (s2) of preparing a vehicle body model of a vehicle body including suspension members made out of a finite number of elements; a vehicle model preparing step (s3) of preparing a vehicle model by attaching the tire model to a suspension model of the suspension members in the vehicle body model; and a simulation step (s4, s5) of virtually running the vehicle model by giving a boundary condition, and estimating vehicle's traveling properties and/or a tire property.

摘要翻译： 一种车辆/轮胎性能的模拟方法，包括：轮胎模型制备步骤（s1），其制备包括由有限数量的元素制成的帘布层的轮胎的轮胎模型; 车身模型制备步骤（s2），其准备包括由有限数量的元件制成的悬挂构件的车体的车身模型; 车辆模型准备步骤（s3），其通过将轮胎模型附接到车体模型中的悬挂构件的悬架模型来准备车辆模型; 以及通过给出边界条件虚拟运行车辆模型并估计车辆的行驶特性和/或轮胎性质的模拟步骤（s4，s5）。

公开(公告)号：US5178699A

公开(公告)日：1993-01-12

申请号：US591895

申请日：1990-10-02

申请人： Kiichiro Kakumu ,  Masaki Shiraishi ,  Hiroyuki Nakagawa ,  Masatoshi Tanaka ,  Yoshiichiro Iwahashi ,  Shigeaki Suzuki

发明人： Kiichiro Kakumu ,  Masaki Shiraishi ,  Hiroyuki Nakagawa ,  Masatoshi Tanaka ,  Yoshiichiro Iwahashi ,  Shigeaki Suzuki

IPC分类号： B60C11/00 ,  B60C11/11

CPC分类号： B60C11/00 ,  B60C11/11 ,  Y10S152/902

摘要： A pneumatic tire has a block pattern which is divided by plural circumferential grooves extending in the circumferential direction of a tire and a number of lateral grooves crossing the circumferential grooves. In the block pattern, the block circumferential/lateral ratio Lm/Wm of the average block circumferential length Lm to the average block width Wm is in a range from 0.38 to 0.55, and the block circumferential length ratio Lm/L of the average block circumferential length Lm to the circumferential length L of the tread part is in a range from 1/120 and to 1/85.