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1. 发明专利

JPH0557952B2 失效
公开(公告)号：JPH0557952B2
公开(公告)日：1993-08-25
申请号：JP31236586
申请日：1986-12-29
申请人： MAZDA MOTOR , MATSUSHITA ELECTRIC IND CO LTD
发明人： MURAI TAKESHI , UKUCHI MAKOTO , MAKI ICHIRO , TAKADA MASAHIRO , NIRASAWA HIROAKI , OGAWA HIROSHI
IPC分类号： B62D7/14 , B62D6/00 , B62D7/15 , B62D101/00 , B62D137/00

2. 发明专利

JPH0557950B2 失效
公开(公告)号：JPH0557950B2
公开(公告)日：1993-08-25
申请号：JP31236386
申请日：1986-12-29
申请人： MAZDA MOTOR , MATSUSHITA ELECTRIC IND CO LTD
发明人： MURAI TAKESHI , UKUCHI MAKOTO , MAKI ICHIRO , TAKADA MASAHIRO , NIRASAWA HIROAKI , OGAWA HIROSHI
IPC分类号： B62D7/14 , B62D6/00 , B62D7/15 , B62D101/00 , B62D137/00

3. 发明专利

JPS63170172A FOUR-WHEEL STEERING GEAR FOR VEHICLE 失效
公开(公告)号：JPS63170172A
公开(公告)日：1988-07-14
申请号：JP31236586
申请日：1986-12-29
申请人： MAZDA MOTOR , MATSUSHITA ELECTRIC IND CO LTD
发明人： MURAI TAKESHI , UKUCHI MAKOTO , MAKI ICHIRO , TAKADA MASAHIRO , NIRASAWA HIROAKI , OGAWA HIROSHI
IPC分类号： B62D7/14 , B62D6/00 , B62D7/15 , B62D101/00 , B62D137/00
摘要： PURPOSE:To aim at the promotion of properness in the step-out detection of an actuator, by comparing a difference between a desired steering ratio and a detected steering ratio with a step-out detection range to be determined according to a running state, detecting a step-out state of the actuator, and at the time of step-out detecting, compensating a steering characteristic to the specified characteristic. CONSTITUTION:In this steering gear, there is provided with a steering ratio setting means 103 which sets each desired steering ratio of both front and rear wheels on the basis of the preset steering ratio characteristic, and an actuator 51 is driven by the output, then each steering ratio of these front and rear wheels is controlled so as to become the desired steering ratio. In this case, also there is provided with a steering ratio detecting means 101 which detects the actual steering ratio controlled by the actuator 51, and a difference between the detected steering ratio and the desired steering ratio is compared with a step-out detection range where a side of the unstable side of a running characteristic is set to be narrower than that at the stable side, thus a step-out state of the actuator 51 is detected. And, when a step-out state is detected, a steering characteristic inherent in a vehicle is constituted so as to be compensated to the specified characteristic by a compensating means 105.

4. 发明专利

JPS63270283A FOUR-WHEEL-STEERING DEVICE FOR VEHICLE 失效
公开(公告)号：JPS63270283A
公开(公告)日：1988-11-08
申请号：JP10540387
申请日：1987-04-28
申请人： MAZDA MOTOR , MATSUSHITA ELECTRIC IND CO LTD
发明人： MURAI TAKESHI , UKUCHI MAKOTO , MAKI ICHIRO , NIRASAWA HIROAKI , OGAWA HIROSHI , TAKADA MASAHIRO
IPC分类号： B62D7/14 , B62D7/15
摘要： PURPOSE:To utilize a vehicle height sensor as a rolling angle detecting means by arranging vehicle height sensors at the right and left of a vehicle and modifying a specific steering angle ratio characteristic according to values detected through the vehicle height sensors. CONSTITUTION:Vehicle speed sensors 80L, 80R for height control are arranged at the right and left of a vehicle provided with a four-wheel-steering device. Variation of vehicle height due to pitching of body is detected through the right and left vehicle height sensors, and an absolute difference between the detected vehicle heights is taken out as a value corresponding to the rolling angle of body when the vehicle turns. A control unit 51 is provided with a signal from a vehicle speed sensor 52, a characteristic switching signal from a manual switch 53 and signals from a steering angle senor 54 and the vehicle height sensors 80L, 80R and outputs steering angle ratio control signals to a stepping motor 44 and a gate valve 47.

5. 发明专利

JPS63170171A FOUR-WHEEL STEERING GEAR FOR VEHICLE 失效
公开(公告)号：JPS63170171A
公开(公告)日：1988-07-14
申请号：JP31236486
申请日：1986-12-29
申请人： MAZDA MOTOR , MATSUSHITA ELECTRIC IND CO LTD
发明人： MURAI TAKESHI , UKUCHI MAKOTO , MAKI ICHIRO , TAKADA MASAHIRO , NIRASAWA HIROAKI , OGAWA HIROSHI
IPC分类号： B62D7/14 , B62D6/00 , B62D7/15 , B62D101/00 , B62D137/00
摘要： PURPOSE:To aim at the promotion of properness in transition to a stable side control mode, by driving an actuator as long as the specified time at the time of detecting the actuator step-out by a comparison between a desired steering ratio and a detected steering ratio, and making it rejudge the transition to the stable side control mode on the basis of the subsequent state. CONSTITUTION:In this steering gear, there is provided with a steering ratio setting means 103 which sets each desired steering ratio of both front and rear wheels on the basis of the preset steering ratio characteristic, and an actuator 51 is driven by the output, then each steering ratio of these front and rear wheels is controlled so as to become the desired steering ratio. In this case, there is provided with a step-out detecting means 104 which detects a step-out state of the actuator by comparing the actual steering ratio controlled at the actuator 51 with the desired steering ratio. And, at the time of step-out detecting, the actuator 51 is driven as long as the specified time so as to cause the steering ratio to become the desired steering ratio by an actuator additional driving means 105, while afterward, when it is so judged that the steering ratio has not accorded with the desired steering ratio, a steering characteristic is compensated to a two-wheel steering state by a compensating means 106.

6. 发明专利

JPS63149266A FOUR WHEEL STEERING DEVICE 失效
公开(公告)号：JPS63149266A
公开(公告)日：1988-06-22
申请号：JP29526586
申请日：1986-12-11
申请人： MATSUSHITA ELECTRIC IND CO LTD , MAZDA MOTOR
发明人： MAKI ICHIRO , NIRASAWA HIROAKI , OGAWA HIROSHI , TAKADA MASAHIRO , MURAI TAKESHI , UKUCHI MAKOTO
IPC分类号： B62D6/02 , B62D7/14
摘要： PURPOSE:To make it possible to diagnose a trouble during four wheel steering control mode, without the stability peculiar to the four wheel steering control being deteriorated, by diagnosing a failure of a control means which changes over between the operation and non-operation of a rear wheel steering means when the neutral of the rear wheel steering angle is detected. CONSTITUTION:When a vehicle is in a four wheel steering control running condition, a controller 8 determines whether the rear wheel steering angle is neutral or not, in accordance with a rear wheel steering angle signal from a rear wheel steering sensor 30. Further, in such a two wheel steering condition as it is determined that the rear wheel steering angle is neutral, a solenoid valve 28 for changing over between the four wheel steering mode and the two wheel steering mode is checked. This checking is made by checking whether the voltage at an input terminal 45 is changed or not when the voltage at an output terminal 44 of a microcomputer 31 is changed over. That is, if the voltage at the input terminal 45 is a value L after a predetermined time elapses from the time when the rear wheel steering angle becomes neutral, it is determined that the solenoid valve 28 is normal.

7. 发明专利

JPH0557949B2 失效
公开(公告)号：JPH0557949B2
公开(公告)日：1993-08-25
申请号：JP31236186
申请日：1986-12-29
申请人： MAZDA MOTOR , MATSUSHITA ELECTRIC IND CO LTD
发明人： MURAI TAKESHI , UKUCHI MAKOTO , MAKI ICHIRO , TAKADA MASAHIRO , NIRASAWA HIROAKI , OGAWA HIROSHI
IPC分类号： B62D7/14 , B62D6/00 , B62D7/15 , B62D101/00 , B62D113/00

8. 发明专利

JPH0557951B2 失效
公开(公告)号：JPH0557951B2
公开(公告)日：1993-08-25
申请号：JP31236486
申请日：1986-12-29
申请人： MAZDA MOTOR , MATSUSHITA ELECTRIC IND CO LTD
发明人： MURAI TAKESHI , UKUCHI MAKOTO , MAKI ICHIRO , TAKADA MASAHIRO , NIRASAWA HIROAKI , OGAWA HIROSHI
IPC分类号： B62D7/14 , B62D6/00 , B62D7/15 , B62D101/00 , B62D137/00

9. 发明专利

JPS63170170A FOUR-WHEEL STEERING GEAR FOR VEHICLE 失效
公开(公告)号：JPS63170170A
公开(公告)日：1988-07-14
申请号：JP31236386
申请日：1986-12-29
申请人： MAZDA MOTOR , MATSUSHITA ELECTRIC IND CO LTD
发明人： MURAI TAKESHI , UKUCHI MAKOTO , MAKI ICHIRO , TAKADA MASAHIRO , NIRASAWA HIROAKI , OGAWA HIROSHI
IPC分类号： B62D7/14 , B62D6/00 , B62D7/15 , B62D101/00 , B62D137/00
摘要： PURPOSE:To aim at the promotion of properness in step-out detection for an actuator, by comparing a detecting steering ratio with an operating speed of the actuator, detecting a step-out state of the actuator, and at the time of step- out detecting, compensating a steering characteristic inherent in a vehicle to the characteristic of a two-wheel speed steering state or the like. CONSTITUTION:In this steering gear, there is provided with a steering ratio setting means 103 which sets each desired steering ratio of both front and rear wheels on the basis of the steering ratio characteristic set according to a driving state of a vehicle, and an actuator 51 is driven by the output, whereby each steering ratio of both front and rear wheels is controlled so as to become the desired steering ratio. In the steering gear like this, also there is provided with a steering ratio speed detecting means 104 which detects a variable speed of the actual steering ratio controlled by the actuator 51, and this steering ratio speed is compared with an operating speed of the actuator 51 at a step-out detecting means 105, thus a step-out state of the actuator 51 is detected. And, when a speed deviation is larger than the specified value, the steering characteristic is constituted so as to be compensated to the specified characteristic by a compensating means 106.

10. 发明专利

JPS63170169A FOUR-WHEEL STEERING GEAR FOR VEHICLE 失效
公开(公告)号：JPS63170169A
公开(公告)日：1988-07-14
申请号：JP31236286
申请日：1986-12-29
申请人： MAZDA MOTOR , MATSUSHITA ELECTRIC IND CO LTD
发明人： MURAI TAKESHI , UKUCHI MAKOTO , MAKI ICHIRO , TAKADA MASAHIRO , NIRASAWA HIROAKI , OGAWA HIROSHI
IPC分类号： B62D7/14 , B62D6/00 , B62D7/15 , B62D101/00 , B62D113/00
摘要： PURPOSE:To aim at the promotion of properness in step-out detection for an actuator, by detecting a step-out state of the actuator in a way of comparing a difference between a desired steering ratio and a detecting steering ratio with a step-out detection range to be determined according to a travel area, and at the time of step-out detecting, compensating a steering characteristic value to the specified characteristic. CONSTITUTION:In this steering gear, there is provided with a steering ratio setting means 103 which sets each desired steering ratio of both front and rear wheels on the basis of the preset steering ratio characteristic, and an actuator 51 is driven by the output, then each steering ratio of these front and rear wheels is controlled so as to become the desired steering ratio. In the steering gear like this, also there is provided with a steering ratio detecting means 101 which detects the actual steering ratio controlled by the actuator 51, and a difference between the detected steering ratio and the desired steering ratio is compared with a step-out detection range different in an unstable area and a stable area as to a travel characteristic at a step-out detecting means 104, whereby a step-out state of the actuator 51 is detected. And, when step-out is detected, the steering characteristic of a vehicle is constituted so as to be compensated to the specified characteristic by a compensating means 105.

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