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1. 发明专利

JP2002274356A ROAD SURFACE FRICTIONAL COEFFICIENT DETERMINING DEVICE 失效
公开(公告)号：JP2002274356A
公开(公告)日：2002-09-25
申请号：JP2001079153
申请日：2001-03-19
申请人： AISIN SEIKI , TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV
发明人： ONOZAWA SATOSHI , ONUMA YUTAKA , ASANO KATSUHIRO , ONO HIDEKAZU , UMENO KOJI
IPC分类号： G01P3/56 , B60R16/02 , B60T8/172 , B60T8/58 , G01N19/02
摘要： PROBLEM TO BE SOLVED: To provide a road surface frictional coefficient determining device capable of accurately determining a frictional coefficient between a road surface and tires used in control of a vehicle as a whole. SOLUTION: Respective wheel speeds of a plurality of wheels provided on the vehicle are detected by a wheel speed sensor 12. Frictional coefficients between the road surface and the tires provided on the plurality of wheels, respectively, are estimated per wheel by a four wheel road surface μ estimating means 20 on the basis of the respective detected wheel speeds of the plurality of wheels. The frictional coefficient between the road surface and the tires of the vehicle as a whole is determined by a road surface μ determining means 40 on the basis of the determined plurality of frictional coefficients.

2. 发明专利

JP2002162225A ROAD SURFACE INCLINATION ESTIMATION DEVICE 失效
公开(公告)号：JP2002162225A
公开(公告)日：2002-06-07
申请号：JP2000359858
申请日：2000-11-27
申请人： TOYOTA MOTOR CORP , AISIN SEIKI
发明人： ONUMA YUTAKA , HAMADA TOSHITAKA
IPC分类号： G01C9/00 , B60T8/24 , G01C9/08 , G01P15/00
摘要： PROBLEM TO BE SOLVED: To accurately estimate the inclination of a road surface even in the case that a vehicle runs on a slope while the vehicle turns. SOLUTION: The slip angle β of a vehicle body is calculated (S20), the longitudinal acceleration Gx' of the vehicle body is calculated after correction in which the centripetal acceleration of the vehicle body caused by the slip angle βof the vehicle body eliminates influence given to the longitudinal acceleration Gx of the vehicle body (S30), the estimation longitudinal acceleration Vwd is calculated on the basis of a value which is a larger value of the wheel speeds Vwf and Vwfr of right and left wheels when the vehicle is not braked (S40, 50), when the vehicle is in a braked state, the estimation longitudinal acceleration Vwd of the vehicle body is calculated on the basis of a value which is the largest value of four-wheel wheel speeds Vwi (S40, 60), and the inclination θof the road surface is calculated on a difference between the longitudinal acceleration Gx' of the vehicle body after correction and the estimation longitudinal acceleration Vwd of the vehicle body (S100).

3. 发明专利

JP2002160621A ROAD SURFACE FRICTION COEFFICIENT ESTIMATING DEVICE 失效
公开(公告)号：JP2002160621A
公开(公告)日：2002-06-04
申请号：JP2000359828
申请日：2000-11-27
申请人： TOYOTA MOTOR CORP , AISIN SEIKI
发明人： ONUMA YUTAKA , HAMADA TOSHITAKA , UMENO KOJI
IPC分类号： G01N19/02 , B60R16/02 , B60T8/172 , B60T8/1764 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To reduce the possibility of abruptly worsening the running stability of a vehicle caused by braking force granted for estimating a friction coefficient. SOLUTION: An increase in braking force on right and left front wheels is started at a predetermined pressure intensifying gradient (S80), longitudinal force Fxj on right and left front wheels is operated (S100), supporting load Fzj on the right and left, front wheels is operated (S110), and in accordance with the longitudinal force Fxj and the supporting load Fzj on the right and left front wheels, the maximum friction coefficient μ max of the road surface is operated (S120-150). Approximate values μl and μ r for the maximum friction coefficient of the road surface corresponding to the right and left front wheels are operated (S220), and when an absolute value for a deviation between the approximate values μl and μr is a reference value μo or more and the road surface friction coefficient with automatic braking force granted to the right and left front wheels is being estimated (S320, 240), a command signal for decreasing a starting threshold value for antiskid control is output to an ABS control device 32 (S250).

4. 发明专利

JP2002070595A OPERATING DEVICE FOR VEHICLE 失效
公开(公告)号：JP2002070595A
公开(公告)日：2002-03-08
申请号：JP2000262713
申请日：2000-08-31
申请人： TOYOTA MOTOR CORP , AISIN SEIKI , DENSO CORP
发明人： ONUMA YUTAKA , KOGA KEIICHI , OISHI MASAYOSHI
IPC分类号： F02D11/10 , B60R16/02 , B62D1/04
摘要： PROBLEM TO BE SOLVED: To provide a vehicle operating device to suppress the influence of the vibration of a main operating member upon the operation of an auxiliary operating member in case the auxiliary operating member is operated while part of the body of a vehicle operator, etc., is in contact with another auxiliary operating member in the condition that part of his body is contacted with the main operating member for controlling the behavior of the vehicle. SOLUTION: The vehicle operating device is equipped with a steering wheel to be turned by a vehicle operator and an engine output control lever or braking force control lever to be turned by hand for controlling the engine and brake in the condition that hand touches the steering wheel, wherein a factor judging means (Step S1 and S2) is provided to judge at least one factor of the motion of the engine output control lever or braking force control lever on the basis of the physical quantitys elated to the vibration of the hand touching with the steering wheel.

5. 发明专利

JP2007308098A Steering device for vehicle 审中-公开
标题翻译：车辆转向装置
公开(公告)号：JP2007308098A
公开(公告)日：2007-11-29
申请号：JP2006141652
申请日：2006-05-22
申请人： Aisin Seiki Co Ltd , Toyota Motor Corp , アイシン精機株式会社 , トヨタ自動車株式会社
发明人： ONUMA YUTAKA , TOUTSU KENJI
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D113/00 , B62D119/00
摘要： PROBLEM TO BE SOLVED: To easily and certainly make a steering wheel and a reference point of a turned wheel coincident and to sense sufficient reaction force by a driver. SOLUTION: ECU 45 for check determines whether or not a detection steering angle θ satisfies a first linear advancement determination condition at step S34 and determines whether or not a steering angle θ satisfies a second linear advancement determination condition at step S35. If the first condition is only satisfied, ECU 45 connects/controls an electromagnetic clutch 22 for connecting a mechanical reaction force giving mechanism 23 and a steering input shaft 12 at step S37. Further, the present detection steering angle θ and the detecting turning angle δ are updated to temporary steering 0 point θkc_0 and temporary turning 0 point δkc_0 at step S39. Further, if a second condition is satisfied, ECU 45 connects/controls the clutch 22 at step S40 again and updates the present detection steering angle θ and the detection turning angle δ to the final steering 0 point θc_0 and the turning 0 point δc_0 at step S42. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了方便和肯定地使转向轮的方向盘和参考点一致，并且由驾驶员感测足够的反作用力。解决方案：用于检查的ECU45在步骤S34中确定检测转向角θ是否满足第一线性前进确定条件，并且在步骤S35确定转向角θ是否满足第二线性前进确定条件。如果仅满足第一条件，则ECU45在步骤S37中连接/控制用于连接机械反作用力给出机构23和转向输入轴12的电磁离合器22。此外，在步骤S39，将本检测转向角θ和检测转向角δ更新为临时转向0点θkc_0，临时转动0点δkc_0。此外，如果满足第二条件，ECU45再次在步骤S40连接/控制离合器22，并且在步骤S40中将当前检测转向角θ和检测转向角δ更新为最终转向0点θc_0和转弯0点δc_0 S42。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2002160623A VEHICULAR ANTISKID CONTROL DEVICE 失效
公开(公告)号：JP2002160623A
公开(公告)日：2002-06-04
申请号：JP2000359845
申请日：2000-11-27
申请人： TOYOTA MOTOR CORP , AISIN SEIKI
发明人： ONUMA YUTAKA , HAMADA TOSHITAKA , UMENO KOJI
IPC分类号： B60T8/58 , B60T8/172 , B60T8/1761
摘要： PROBLEM TO BE SOLVED: To properly control braking slip of wheels in the condition that braking force is granted to the wheels by an automatic braking device. SOLUTION: When a stop lamp switch 34 is discriminated to be on (S20), or when it is discriminated to be automatically controlled by an automatic brake control device 32 (S30), a threshold value for starting antiskid control is prevented from being set higher by the selection of the conditions of stating antiskid control during braking (S40). Thus, there is no case that, until the braking slip is higher than that at starting normal antiskid control, the antiskid control is not started and a controlled variable at starting the antiskid control is larger resulting therefrom to cause an abrupt change in braking force.

7. 发明专利

JP2002160622A ROAD SURFACE FRICTION COEFFICIENT ESTIMATING DEVICE 失效
公开(公告)号：JP2002160622A
公开(公告)日：2002-06-04
申请号：JP2000359841
申请日：2000-11-27
申请人： TOYOTA MOTOR CORP , AISIN SEIKI , TOYOTA CENTRAL RES & DEV
发明人： ONUMA YUTAKA , HAMADA TOSHITAKA , ONO HIDEKAZU
IPC分类号： G01N19/02 , B60R16/02 , B60T8/172 , B60T8/1755 , B60T8/1764 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To reduce the possibility of worsening the running stability of a vehicle during turning, caused by braking force granted for estimating a friction coefficient. SOLUTION: An increase in braking force on right and left front wheels is started at a predetermined pressure intensifying gradient (S60), longitudinal force Fxj on right and left front wheels is operated (S100), supporting load Fzj on the right and left front wheels is operated (S110), and in accordance with the longitudinal force Fxj and the supporting load Fzj on the right and left front wheels, the maximum friction coefficient μmax of the road surface is operated (S120-140). An approximate value μa for the maximum friction coefficient of the road surface (S30) is operated, and when the approximate value μa is a reference value μo or less and the vehicle is in a turning condition (S40, 50), an increase in all braking pressure is started at a lower gradient than a predetermined pressure intensifying gradient (S70) and in accordance with the longitudinal force Fxj of the right at left front wheels and the like the maximum friction coefficient μmax of the road surface is operated (S200-240).

8. 发明专利

JP2002160618A ROAD SURFACE CONDITION ESTIMATING DEVICE 失效
公开(公告)号：JP2002160618A
公开(公告)日：2002-06-04
申请号：JP2000358453
申请日：2000-11-24
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP , AISIN SEIKI
发明人： UMENO KOJI , ONO HIDEKAZU , ASANO KATSUHIRO , ONUMA YUTAKA , ONOZAWA SATOSHI
IPC分类号： B60T8/172 , B60T8/1763 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To precisely estimate a physical value representing a road surface condition during braking or non-braking operation, running on a good road surface and running on a rough road surface. SOLUTION: A wheel speed signal detected by a wheel speed sensor 10 is inputted to a μ gradient estimating device 12 and a μ gradient estimating device 14. A decelerating motion model and a rotating vibration model are applied each of them for estimating a road surface μ gradient in accordance with the wheel speed signal, and an estimated value for the estimated road surface μgradient is inputted to a selecting device 16. The selecting device 16 selects an estimated value for a second road surface μ gradient estimated by the μgradient estimating device 14 when a deceleration run signal is not inputted (during acceleration run, normal run and deceleration with an engine brake), and outputs it as an estimated value μA for the selected road surface μ gradient and outputs an estimated value for a first road surface μ gradient estimated by the first μ gradient estimating device 12 as an estimated value μB for the road surface μ gradient, not selected. The selected estimated value μA is corrected by multiplying μB/μA.

9. 发明专利

JP2002255019A ROAD SURFACE STATE PREDICTING DEVICE 失效
公开(公告)号：JP2002255019A
公开(公告)日：2002-09-11
申请号：JP2001055178
申请日：2001-02-28
申请人： TOYOTA CENTRAL RES & DEV , TOYOTA MOTOR CORP , AISIN SEIKI
发明人： SUGAI MASARU , ASANO KATSUHIRO , ONO HIDEKAZU , ONUMA YUTAKA , ONOZAWA SATOSHI
IPC分类号： G01N19/02 , B60R16/02 , B60T8/172 , B60T8/1763 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To accurately predict the maximum road surface frictional coefficient without being affected by a variation in a road surface state and without providing excessive vibration to a vehicle. SOLUTION: Based on a brake oil pressure signal Pb in time series from a pressure sensor 16 and a wheel speed signal ωw in time series from a wheel speed sensor 22, a braking force gradient predicting part 23 obtains an origin braking force gradient α0, an instantaneous braking force gradient α, and a braking force F at that time. The maximum braking force predicting part 24 calculates the maximum braking force Fmax by using the origin braking force gradient α0, instantaneous braking force gradient α, and braking force F at that time. A μmax predicting part 25 obtains the maximum road surface frictional coefficient μmax by substituting the maximum braking force Fmax obtained in the maximum braking force predicting part 24 and a wheel load W.

10. 发明专利

JP2002160619A FRICTION COEFFICIENT ESTIMATING DEVICE FOR ROAD SURFACE 失效
公开(公告)号：JP2002160619A
公开(公告)日：2002-06-04
申请号：JP2000359855
申请日：2000-11-27
申请人： TOYOTA MOTOR CORP , AISIN SEIKI , TOYOTA CENTRAL RES & DEV
发明人： ONUMA YUTAKA , HAMADA TOSHITAKA , ONO HIDEKAZU
IPC分类号： B60T8/172 , B60T8/1763 , B60T8/58
摘要： PROBLEM TO BE SOLVED: To estimate the friction coefficient of a road surface based on which the deceleration of a vehicle is estimated close to the actually possible deceleration of the vehicle. SOLUTION: The braking pressure on right and left front wheels is intensified up to predetermined brake slipped condition (S30, 80, 90), longitudinal force Fxj and supporting load Fzj of the right and left front wheels are operated (S50, 60), the friction coefficient of the road surface is operated based on the longitudinal force Fxj and the supporting load Fzj of the right and left front wheels (S100), and the individual maximum values are set as the maximum friction coefficients μfl, μfr of the right and left front wheels. The maximum friction coefficient μ max of the road surface is operated as a simple average value for μfl, μfr when the vehicle is in a non-turning condition (S120), and it is operated as an average value for μfl, μfr whose smaller one is increased in weight when the vehicle is in the non-turning condition and one of rear wheels subjected to antiskid control is followed by the other on the opposite side to be possible subjected to low selection control (S130-150).

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