公开(公告)号：US06323765B1

公开(公告)日：2001-11-27

申请号：US09129403

申请日：1998-08-05

申请人： Hiroto Horie ,  Minao Yanase ,  Mikao Nakajima ,  Yasushi Kobayashi ,  Masaaki Komazawa

发明人： Hiroto Horie ,  Minao Yanase ,  Mikao Nakajima ,  Yasushi Kobayashi ,  Masaaki Komazawa

IPC分类号： B60C2300

CPC分类号： B60C23/061

摘要： A tire air-pressure abnormality alarming device for informing decrease in air-pressure of tires attached to a four-wheeled vehicle, characterized in that the device prohibits start of initializing operations for updating stored values for physical amounts related to tires or wheels in the case where air-pressures of the tires are judged to be normal, if air-pressure abnormality of a tire is being alarmed. Initialization is accepted only after the internal pressure has become normal, whereby erroneous initialization with any tire being in a decompressed condition can be prevented. Thus, normal operations for detecting decompression of a tire can be maintained.

摘要翻译： 一种轮胎气压异常报警装置，用于通知附着在四轮车辆上的轮胎的气压降低，其特征在于，该装置禁止开始初始化操作，用于更新与该轮胎或车轮相关的物理量的存储值 如果轮胎的气压异常被警告，则认为轮胎的空气压力正常。 初始化仅在内部压力变得正常之后被接受，由此可以防止任何轮胎处于减压状态的错误初始化。 因此，可以保持用于检测轮胎的减压的正常操作。

公开(公告)号：US5629478A

公开(公告)日：1997-05-13

申请号：US570004

申请日：1995-12-08

申请人： Mikao Nakajima ,  Isao Isshiki

发明人： Mikao Nakajima ,  Isao Isshiki

IPC分类号： B60C23/06 ,  B60C23/02

CPC分类号： B60C23/061

摘要： A method of and a device for detecting a pneumatic pressure drop of tires provided for a vehicle are disclosed. Rotational angular velocities of tires are determined and a judged value D is determined based on the determined rotational angular velocities. A speed of the vehicle, a front/rear acceleration FRA of the vehicle, a lateral acceleration LA of the vehicle and a turning radius R of the vehicle are substituted into a predetermined polynominal expression which is defined so that an influence of the turning radius R is exerted on all terms to determine a correction value. A judged value D' after correction is determined by correcting the judged value D using the correction value. It is judged whether a tire pressure drops or not, based on the judged value D' after correction. In such way, a tire pressure drop can be detected, accurately, excluding an influence of the turning radius R of the vehicle.

摘要翻译： 公开了一种用于检测为车辆提供的轮胎的气动压降的方法和装置。 确定轮胎的旋转角速度，并且基于确定的旋转角速度来确定判断值D. 车辆的速度，车辆的前后加速度FRA，车辆的横向加速度LA和车辆的转弯半径R被代入预定的多项式表达式，其被定义为使得转弯半径R的影响 以所有术语施加以确定校正值。 校正后的判断值D'通过使用修正值对判定值D进行修正来决定。 基于校正后的判定值D'，判断胎压是否下降。 以这种方式，可以精确地检测轮胎压降，排除车辆的转弯半径R的影响。

公开(公告)号：US6061642A

公开(公告)日：2000-05-09

申请号：US952753

申请日：1997-11-13

申请人： Mikao Nakajima

发明人： Mikao Nakajima

IPC分类号： G01M17/02 ,  B60C23/04 ,  B60C23/06 ,  B60T8/172 ,  G01P1/04 ,  G01P3/00 ,  G01P3/56 ,  G01P21/02

CPC分类号： G01P21/02 ,  B60C23/061 ,  B60T8/172 ,  G01P1/04 ,  G01P3/00 ,  G01P3/56

摘要： A device for determining a correction factor for correcting an output of a rotational velocity mechanism for detecting the rotational velocity of a tire mounted on a vehicle, and a slip factor calculating device and a tire pressure drop detecting device utilizing the determining device. The rotational velocity of the tire is detected in response to the fact that an initializing switch is operated at the time of trial linear coasting. An initial correction factor is found on the basis of the rotational velocity. The initial correction factor is stored in an E.sup.2 PROM. At a time of normal traveling, the rotational velocity is initially corrected on the basis of the initial correction factor (S2). Further, the slip factor is calculated on the basis of the rotational velocity after the initial correction (S3). A judged value required to detect the drop in air pressure in the tire is corrected on the basis of the slip factor or the like (S9). The initial correction factor representing only a relative difference in effective rolling radius between tires can be acquired, so that an initial difference can be eliminated from the rotational velocity with high precision.

摘要翻译： PCT No.PCT / JP97 / 00791 Sec。 371日期：1997年11月13日 102（e）1997年11月13日PCT PCT 1997年3月13日PCT公布。 公开号WO97 / 34152 PCT 日期：1997年9月18日用于确定校正系数的装置，用于校正用于检测安装在车辆上的轮胎的转速的旋转速度机构的输出;以及滑移因数计算装置和轮胎压降检测装置， 设备。 响应于在试验线性滑行时初始化开关被操作的事实来检测轮胎的旋转速度。 基于旋转速度找到初始校正因子。 初始校正因子存储在E2PROM中。 在正常行驶时，基于初始校正因子（S2），初始地校正旋转速度。 此外，基于初始校正后的旋转速度来计算滑移系数（S3）。 基于滑移因子等来校正检测轮胎气压下降所需的判断值（S9）。 可以获得仅表示轮胎之间的有效滚动半径的相对差的初始校正因子，从而可以高精度地从旋转速度消除初始差异。

公开(公告)号：US5828975A

公开(公告)日：1998-10-27

申请号：US557322

申请日：1995-11-14

申请人： Isao Isshiki ,  Mikao Nakajima

发明人： Isao Isshiki ,  Mikao Nakajima

IPC分类号： G01B21/20 ,  B60C23/06 ,  B60T8/172 ,  G01C21/16 ,  G06F7/70 ,  B60C23/02

CPC分类号： B60T8/172 ,  B60C23/061

摘要： A method of and a device for determining a turning radius of a vehicle, accurately, without being influenced by the load movement of the vehicle, are disclosed. The rotational angular velocities of left and right tires are detected, respectively. The turning radius of the vehicle is determined, based on the detected rotational angular velocity, by taking a change in effective rolling radiuses due to the load movement of the vehicle into consideration.

摘要翻译： 公开了一种用于确定车辆的转弯半径而不受车辆的载荷运动影响的精确的方法和装置。 分别检测左右轮胎的旋转角速度。 基于所检测的旋转角速度，通过考虑由于车辆的载荷移动引起的有效的滚动半径的变化来确定车辆的转弯半径。

公开(公告)号：US5959202A

公开(公告)日：1999-09-28

申请号：US990532

申请日：1997-12-15

申请人： Mikao Nakajima

发明人： Mikao Nakajima

IPC分类号： G01P3/50 ,  B60C23/00 ,  B60C23/06 ,  G01P1/04 ,  G01P3/42 ,  G01P3/56 ,  G01P15/00 ,  G01P21/02 ,  B60C23/02

CPC分类号： G01P21/02 ,  B60C23/061 ,  G01P1/04 ,  G01P3/56

摘要： A device for finding correction factors for correcting outputs of rotational velocity detectors used for detecting the rotational velocities of four tires mounted on a vehicle. The device judges whether or not the vehicle is traveling linearly. If the vehicle is traveling linearly, an initial correction factor K.sub.1 for eliminating the effect of a difference in effective rolling radius between the right and left front tires, and an initial correction factor K.sub.2 for eliminating the effect of a difference in effective rolling radius between the right and left rear tires, are calculated on the basis of the outputs of the rotational velocity detectors. When it is judged that the vehicle is coasting linearly, an initial correction factor K.sub.3 for eliminating the effect of a difference in effective rolling radius between the front tire and the rear tire is calculated.

摘要翻译： 一种用于寻找用于校正用于检测安装在车辆上的四个轮胎的旋转速度的旋转速度检测器的输出的校正因子的装置。 该装置判断车辆是否线性行驶。 如果车辆线性行驶，则用于消除左右前轮胎之间的有效滚动半径的差异的影响的初始校正系数K1和用于消除左右前轮胎之间有效滚动半径的差异的影响的初始校正系数K2 基于转速检测器的输出计算右后轮胎和左后轮胎。 当判定车辆线性滑行时，计算用于消除前轮胎和后轮胎之间的有效滚动半径的差异的影响的初始校正系数K3。

公开(公告)号：US5936519A

公开(公告)日：1999-08-10

申请号：US785742

申请日：1997-01-17

申请人： Mikao Nakajima ,  Toshihiro Toda

发明人： Mikao Nakajima ,  Toshihiro Toda

IPC分类号： G01L17/00 ,  B60C23/02 ,  B60C23/06 ,  B60S5/04 ,  G01B21/20 ,  B60C23/00

CPC分类号： B60C23/061

摘要： A tire pressure drop detecting method, capable of accurately detecting whether the pneumatic pressure of a tire has dropped even if a large driving torque is exerted on the tires. The rotational angular velocities of tires provided for a vehicle are detected and a front/rear acceleration of the vehicle is detected, and then it is discriminated whether the vehicle is in a predetermined decelerated state or not, based on the detected front/rear acceleration of the vehicle. If the vehicle is in the predetermined decelerated state, it is judged whether the pneumatic pressure of the tires has dropped, based on the detected rotational angular velocities. The pneumatic pressure drop of the tire is judged only when the vehicle is in the decelerated state where a difference between the rotational angular velocity of the tire at the time of pneumatic pressure drop and that at the time of a normal inner pressure is relatively large.

摘要翻译： 一种轮胎压降检测方法，即使对轮胎施加较大的驱动转矩，也能够准确地检测轮胎的气动压力是否下降。 检测为车辆提供的轮胎的旋转角速度，并且检测车辆的前后加速度，然后基于检测到的前后加速度来判别车辆是否处于预定的减速状态 机动车。 如果车辆处于预定减速状态，则根据检测到的旋转角速度判断轮胎的气动压力是否下降。 仅当车辆处于气动压降时轮胎的旋转角速度与正常内压时的转速角速度之间的差异较大的减速状态时才判定轮胎的气动压降。

公开(公告)号：US5604307A

公开(公告)日：1997-02-18

申请号：US593370

申请日：1996-01-29

申请人： Akiko Iida ,  Mikao Nakajima ,  Hiroto Horie

发明人： Akiko Iida ,  Mikao Nakajima ,  Hiroto Horie

IPC分类号： B60C23/06 ,  B60C23/02

CPC分类号： B60C23/061

摘要： A tire pressure drop alarm device for judging a pneumatic pressure drop by calculating rotational angular velocities of tires provided for a four-wheel vehicle. When the vehicle is traveling on a road which varies in condition between left and right sides, a front/rear ratio of rotational angular velocities of the tires at the shoulder side of the road changes more markedly than that of rotational angular velocities of the tires at the center side, and a large time differential value appears. Therefore, it is possible to judge the traveling condition of the vehicle when the road condition varies between left and right sides. When it is judged that the traveling condition of the vehicle encounters a road condition which varies between left and right sides, the tire rotation of the four wheels is likely to become unbalanced, giving a false alarm even if the tire pressure does not drop. In this case, the judgment by the pneumatic pressure drop judging means is inhibited to prevent an issuance of a false alarm.

摘要翻译： 一种轮胎压降报警装置，用于通过计算设置在四轮车辆上的轮胎的旋转角速度来判断气压降。 当车辆在左右两侧的条件变化的道路上行驶时，道路的肩侧的轮胎的旋转角速度的前后比例比轮胎的旋转角速度的前后比例显着地变化 中心侧，和一个大的时间差的值出现。 因此，可以判断车辆的行驶状态时，路况左右之间变化。 当判断车辆的行驶状况遇到在左右两侧之间变化的道路状况时，四个车轮的轮胎转动容易变得不平衡，即使轮胎压力不下降也会产生虚假警报。 在这种情况下，由气动压力降判断装置的判断被抑制，以防止发行误报警。

公开(公告)号：US5578984A

公开(公告)日：1996-11-26

申请号：US330740

申请日：1994-10-28

申请人： Mikao Nakajima

发明人： Mikao Nakajima

IPC分类号： B60C23/06 ,  B60C23/00

CPC分类号： B60C23/061

摘要： According to the tire air-pressure reduction detecting apparatus and method of the present invention, when a vehicle travels, the detected rotational angular speeds F.sub.i of the tires W.sub.i are multiplied by correction coefficients C.sub.i to correct initial differences. Vehicle speed V.sub.0 is calculated based on angular speeds F.sub.i0, and is put in a relationship formula f(V) to obtain a front/rear wheel ration f(V.sub.0) corresponding to the speed V.sub.0. Based on the front/rear wheel ratio f(V.sub.1) corresponding to a speed V.sub.1 at which the correction coefficients C.sub.i have been obtained, and the ration f(V.sub.0), there is obtained a variation of the front/rear wheel ratio f(V.sub.0)/f(V.sub.1), by which rotational angular speeds F.sub.3, F.sub.4 are then multiplied. The products are used for detecting a reduction in the air pressure of a tire W.sub.i, thereby to calculate a judgement value D. When D satisfies the conditions:D D.sub.TH2it is judged that there is a tire W.sub.i with reduced air pressure. Such processing eliminates the influence of speed variations or forward/backward acceleration, such that the rotational angular speeds of the front and rear tires can be obtained more accurately. It is therefore possible to detect a reduction in air pressure with high precision regardless of vehicle speed or forward/backward acceleration.

摘要翻译： 根据本发明的轮胎气压降低检测装置和方法，当车辆行驶时，将检测到的轮胎Wi的旋转角速度Fi乘以校正系数Ci以校正初始差。 基于角速度Fi0计算车速V0，并将其设为关系式f（V），以获得与速度V0对应的前后轮比f（V0）。 基于与获得校正系数Ci的速度V1对应的前/后轮比f（V1）和比例f（V0），获得前/后轮比f（V0）的变化 ）/ f（V1），然后乘以旋转角速度F3，F4。 该产品用于检测轮胎Wi的空气压力的降低，从而计算出判定值D.当D满足条件：D <-DTH1或D> DTH2时，判断为具有减小的轮胎Wi 空气压力。 这样的处理消除了速度变化或前进/后退加速度的影响，从而可以更准确地获得前轮胎和后轮胎的旋转角速度。 因此，与车速或前进/后退加速度无关地，可以高精度地检测气压的降低。

公开(公告)号：US08544966B2

公开(公告)日：2013-10-01

申请号：US12348861

申请日：2009-01-05

申请人： Mikao Nakajima

发明人： Mikao Nakajima

IPC分类号： B60T8/32 ,  B60T8/60

CPC分类号： B60T8/4059 ,  B60T8/00 ,  B60T8/4872 ,  B60T2210/14

摘要： A brake controller for a vehicle is disclosed. The brake controller is mounted on the vehicle to control the drive of the brake device. The brake controller comprises a rough road index calculating section for calculating a rough road index in a predetermined cycle, wherein the rough road index indicates an unevenness degree of the road on which the vehicle travels; and a controlling section for controlling the drive of the brake device to provide the driving force to the brake pad when the current rough road index calculated by the rough road index calculating section is smaller than a previous rough road index calculated by the rough road index calculating section.

摘要翻译： 公开了一种用于车辆的制动控制器。 制动控制器安装在车辆上以控制制动装置的驱动。 该制动控制器包括：粗路面指标计算部，用于计算预定周期中的粗糙路面指数，其中粗路面指数表示车辆行驶的道路的不均匀度; 以及控制部，其用于当由所述粗路指数计算部计算出的当前粗路指数小于由所述粗路指数计算出的前一粗路指数时，控制所述制动装置的驱动以向所述制动衬块提供驱动力 部分。

公开(公告)号：US20090184573A1

公开(公告)日：2009-07-23

申请号：US12348861

申请日：2009-01-05

申请人： Mikao NAKAJIMA

发明人： Mikao NAKAJIMA

IPC分类号： B60T8/60

CPC分类号： B60T8/4059 ,  B60T8/00 ,  B60T8/4872 ,  B60T2210/14

摘要： A brake controller for a vehicle is disclosed. The brake controller is mounted on the vehicle to control the drive of the brake device. The brake controller comprises a rough road index calculating section for calculating a rough road index in a predetermined cycle, wherein the rough road index indicates an unevenness degree of the road on which the vehicle travels; and a controlling section for controlling the drive of the brake device to provide the driving force to the brake pad when the current rough road index calculated by the rough road index calculating section is smaller than a previous rough road index calculated by the rough road index calculating section.

摘要翻译： 公开了一种用于车辆的制动控制器。 制动控制器安装在车辆上以控制制动装置的驱动。 该制动控制器包括：粗路面指标计算部，用于计算预定周期中的粗糙路面指数，其中粗路面指数表示车辆行驶的道路的不均匀度; 以及控制部，其用于当由所述粗路指数计算部计算出的当前粗路指数小于由所述粗路指数计算出的前一粗路指数时，控制所述制动装置的驱动以向所述制动衬块提供驱动力 部分。