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1. 发明专利

JPH0796825A VEHICULAR SLIP CONTROLLER 失效
公开(公告)号：JPH0796825A
公开(公告)日：1995-04-11
申请号：JP24259393
申请日：1993-09-29
申请人： NIPPON DENSO CO
发明人： SAITO SHIGERU , MAKI KAZUYA , GOSHIMA TAKAHIRO
IPC分类号： B60T8/1755 , B60T8/172 , B60T8/1761 , B60T8/58
摘要： PURPOSE:To improve the brake performance in a vehicular turning time by correcting the wheel speed of right/left wheels and a standard speed to be compared together to a low speed when a vehicular turning state is detected. CONSTITUTION:In ABS computer 120, the wheel speed is calculated respectively based on the detection signal from wheel speed sensors 101-104, the wheel acceleration of respective wheels is calculated based on the wheel speed, a vehicular friction coefficient mu between a running road surface and a wheel is decided based on the detection signal of G sensor 110 and a carbody speed is calculated based on the wheel speed of respective wheels. When the vehicle is in a go straight state, usual target control speed is calculated and the steering angle of a steering wheel is calculated by the detection signal of a steering sensor 130 and it is calculated by the calculated steering angle to what extent a slip rate with the highest friction coefficient mu. is offset in comparison with that of the go straight state. The most suitable target control car-speed is calculated by using the usual target control car speed and the target control corrective car-speed in a turning time.

2. 发明专利

JPH07101328A SLIP CONTROL DEVICE FOR VEHICLE 失效
公开(公告)号：JPH07101328A
公开(公告)日：1995-04-18
申请号：JP25171393
申请日：1993-10-07
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： SAITO SHIGERU , MAKI KAZUYA , GOSHIMA TAKAHIRO , NAKAGAWA FUMIO
IPC分类号： B60T8/24 , B60T8/172 , B60T8/1755 , B60T8/1763 , B60T8/58 , B60T8/66
摘要： PURPOSE:To contrive compatibility of steering performance and braking performance at the time of braking a vehicle turned. CONSTITUTION:A device comprises wheel speed sensors 101 to 104, G sensor 110, steering angle sensor 130 and an ABS computer 120, and the ABS computer 120 calculates each wheel speed and a car body speed from detection signals of the wheel speed sensors 101 to 120 and calculates an ordinary target control car speed VSN when a vehicle is placed in a straight advancing condition based on both the wheel and car body speeds. Simultaneously with the above, based on a steering angular speed calculated from a detection signal of the steering angle sensor 130, when quick steering is decided to be performed, the ordinary target control car speed VSN is corrected in a direction of increasing by a quick steering correction amount DELTAK, and also this quick steering correction amount DELTASK is changed in accordance with a road surface mu decided from a detection value of the G sensor 110.

3. 发明专利

JPH06255468A BRAKE CONTROL DEVICE 失效
公开(公告)号：JPH06255468A
公开(公告)日：1994-09-13
申请号：JP6601893
申请日：1993-03-01
申请人： NIPPON DENSO CO
发明人： OOKA MASAKI , SAITO SHIGERU , MASAKI SHOICHI
IPC分类号： B60T8/72 , B60T8/172 , B60T8/1763
摘要： PURPOSE:To prevent rear lift-up, and thereby enhance vehicle stability in a brake control device including an ABS. CONSTITUTION:The device is made up of wheel speed sensors 11, 12, 13 and 14 disposed for ABS control at right and left front wheels, and right and left rear wheels for detecting each wheel speed, a G sensor 15 detecting the deceleration of a car body, an actuator 30 which boosts, holds and decompresses the hydraulic pressure of wheel cylinders(W/C) 21, 22, 23 and 24 disposed at the right and left front wheels, and the right and left rear wheels respectively based on hydraulic pressure from a master cylinder(M/C) 20, and of a computer 40. A condition liable to cause rear lift-up is judged by the computer 40 before and during ABS control for the right and left front wheels and the right and left rear wheels of a vehicle. The execution of brake control making use of an ABS based on the aforesaid judgement can enhance running stability without impairing braking force.

4. 发明专利

JPH03200461A VEHICULAR BRAKING PRESSURE CONTROL DEVICE 失效
公开(公告)号：JPH03200461A
公开(公告)日：1991-09-02
申请号：JP34356689
申请日：1989-12-28
申请人： TOYOTA MOTOR CORP , NIPPON DENSO CO
发明人： SAITO SHIGERU , TAMURA KIMIO , ISE SEIKI , FUJITA KOZO
IPC分类号： B60T8/175 , B60T8/58
摘要： PURPOSE:To prevent the free running state generated at the control shifting time on the crossover road surface or the like by computing the controlled variable on the basis of the wheel speed excluding higher driving wheel speed during the traction control time of a vehicle so as to perform the anti-skid control of the vehicle. CONSTITUTION:Each wheel speed of a vehicle is detected by a means A. Traction control is performed by a means B to suppress the acceleration slip of each wheel on the basis of the detected wheel speed. Anti-skid control is also performed by a means C to suppress the locking of each wheel. In the means C in this case, a means D discriminates whether or not the means B is in control operation. The controlled variable is computed by a means E on the basis of each detected wheel speed at the non controlling time of the means B as well as on the basis of the wheel speed excluding at least the higher driving wheel speed at the controlling time of the means B. The braking pressure of each wheel is then controlled by a means F according to the computed controlled variable.

5. 发明专利

JPH01259793A CONTROL FOR STEPPING MOTOR 失效
公开(公告)号：JPH01259793A
公开(公告)日：1989-10-17
申请号：JP18895388
申请日：1988-07-28
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： KABUNE HIDEKI , MIYAKE SEI , YAMADA SHINICHI , SAITO SHIGERU , KAMIYA KOJI , ASAMI KEN
IPC分类号： H02P8/38 , H02P8/00 , H02P8/10
摘要： PURPOSE:To start a stepping motor positively without deteriorating actual controllability by driving the stepping motor by the signal of low frequency only for one period section and increasing rotational speed. CONSTITUTION:The initial position thetaM of a rotor and the position (a start starting point) of a coil conducted by a first (step) phase excitation pattern not necessarily coincide. When phase excitation patterns are output successively in the graph because both positions are displaced only by three steps, the position of the rotor and the conducted coil are synchronized at a third step. When phase excitation pattern one-period sections (eight steps) are output in succession in other cases, the rotor and the coil are synchronized during the time of the output, thus positively acquiring driving torque.

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