专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 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.

2. 发明专利

JPS61238557A ANTISKID CONTROL DEVICE 失效
公开(公告)号：JPS61238557A
公开(公告)日：1986-10-23
申请号：JP7909285
申请日：1985-04-13
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： MASAKI SHOICHI , MAEHATA HIROMI , ASAMI KEN , SAKAI KAZUNORI
IPC分类号： B60T8/72 , B60T8/1761 , B60T8/1763 , B60T8/58 , B60T8/70 , B60T8/78
摘要： PURPOSE:To prevent the hydraulic pressure of a brake from excessively decreasing, by calculating the degree of bake hydraulic pressure reduction in accordance with the variation rate of acceleration during the initial stage of pressure reduction to regulate the brake hydraulic pressure. CONSTITUTION:An antiskid control device comprises a wheel speed detecting means M2, an actuator M3 for regulating the hydraulic pressure of a brake and a control means M4 for controlling the actuator M3. The control means M4 comprises a means M5 for detecting the initial stage of deceleration, a means M6 for detecting variations of wheel acceleration and a means M7 for calculating the degree of pressure reduction, which are constituted by microcomputers. The initial stage deceleration detecting means M5 detects a predetermined time belonging to the initial stage of deceleration in accordance with a wheel speed signal, and delivers the same to the wheel acceleration variation detecting means M6 which therefore calculate the rate of variation of the wheel acceleration. Therefore, the pressure reduction degree detecting means calculates the degree of pressure reduction to actuate the actuator.

3. 发明专利

JPS61193961A TROUBLE DETECTOR FOR ENGINE SPEED SENSOR 失效
公开(公告)号：JPS61193961A
公开(公告)日：1986-08-28
申请号：JP3602885
申请日：1985-02-25
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： MAEHATA HIROMI , OKUDA YUTAKA , MASAKI SHOICHI , HIRANO SATORU , ASAMI KEN , SAKAI KAZUNORI
IPC分类号： B60T8/88 , G01P3/42 , G01P3/44 , G01P21/02
摘要： PURPOSE:To make anything trouble in an engine speed sensor detectable so speedily, by judging that the engine speed sensor is out of order when a pulse signal out of the sensor is not within the longest estimated time. CONSTITUTION:In a wheel 1, there is provided with a solenoid pickup type car speed sensor 5 which is constituted of an accelerator hub 5b fitted with a lot of projections 5a on the circumference and a solenoid device 5c. An elec tronic control circuit 26 is connected to this solenoid device 5c, while the control circuit 26 consists of a waveform shaping circuit 30, a microcomputer 35 and an actuator driving circuit 36, and with its output, an actuator 17 is driven. A detection signal out of the car speed sensor is shaped into a pulse signal by the waveform shaping circuit 30, and on the basis of this signal, duration ranging from a final pulse signal to the next pulse signal is counted. And, when this time is longer than the estimated longest time, it is judged that the car speed sensor 5 is now out of order.

4. 发明专利

JPH04331654A ANTISKID CONTROLLER 失效
公开(公告)号：JPH04331654A
公开(公告)日：1992-11-19
申请号：JP6452591
申请日：1991-03-28
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： MASAKI SHOICHI , TAMURA KIMIO , WAKAO TERUYOSHI , NAKAJIMA NORIYUKI , ASAMI KEN , SAKAI KAZUNORI
IPC分类号： B60T8/58 , B60T8/172 , B60T8/1763
摘要： PURPOSE:To execute antiskid control conformed to a frictional state in succession by changing the contents of the antiskid control in accordance with the friction factor between a road surface and a tire, while holding information on the frictional state. CONSTITUTION:When decompression control is performed by a control means (b), there are provided a grade changing means (d), changing a decompressing grade at a partial period during the decompressing period, and a judging means (e) judging whether the friction factor between a tire and a road surface is in a state of being lowered or not, and when it is so judged that the friction factor is a lowered state by this judging means (e), the judged result is stored in a storage means (g) Then, a fact that the friction factor is reset to a higher state from the lower state is detected, and simultaneously when this rest state is detected, an erasing means (f) memory contents of the storage means (g). In succession, a prohibiting means (h) prohibits any change of a decompression grade by the grade changing means (d) at a time when the storage means (g) stores a fact that the friction factor is in a state of being lowered.

5. 发明专利

JPS61202210A 3-POSITION STOP TYPE ROTARY DRIVER 失效
公开(公告)号：JPS61202210A
公开(公告)日：1986-09-08
申请号：JP4421685
申请日：1985-03-05
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： SOGABE ICHITA , TOKUDA HIROSHI , YANO MASAYUKI , YOKOYA YUJI , ASAMI KEN
IPC分类号： H02K7/10 , F16F9/46 , G05D3/00 , G05D3/10
摘要： PURPOSE:To reduce the total outer diameter of a rotary driver by providing an output rotary member along the inside of a case extending in its lengthwise direction together with a fixed position stopping mechanism at a position shifted in the lengthwise direction of the case. CONSTITUTION:A driver of 3-position stop type consists of a motor 2 put into a case 1 extending in its lengthwise direction, a plunger 11 which is set along the lengthwise direction of the case 1 and turned by the motor 2, a stopper member 12 which is connected to the plunger 11 and turned in a body with the plunger 11, the 1st control member 16 which controls the member 12 between the 1st and 2nd positions, the 2nd control members 14a and 14b shifted in the lengthwise direction of the case 1 and a solenoid 10 which stops the plunger 11 at the 3rd position. Thus the member 12 connected to the plunger 11 is stopped by the member 16 and controlled within a prescribed revolving angle between the 1st and 2nd positions. Then the member 12 is connected to both members 14a and 14b in an active mode of the solenoid 10, and the rotation of the plunger 11 is stopped at the 3rd position.

6. 发明专利

JPS61178257A ANTI-SKID CONTROL DEVICE 失效
公开(公告)号：JPS61178257A
公开(公告)日：1986-08-09
申请号：JP1776485
申请日：1985-01-31
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： MAEHATA HIROMI , OKUDA YUTAKA , MASAKI SHOICHI , HIRANO SATORU , ASAMI KEN , SAKAI KAZUNORI
IPC分类号： B60T8/72 , B60T8/172 , B60T8/1764 , B60T8/58
摘要： PURPOSE:To aim at preventing the brake pressure from unnecessarily lowering when the acceleration is pulsatively detected due to vibration, by altering the change-over reference for the pressure reducing mode into a second reference value for a predetermined period from the time when the acceleration becomes zero after the acceleration exceeding a vibration detecting reference value is detected. CONSTITUTION:An acceleration G is computed in accordance with detection signals from vehicle speed sensors 5, 6. When it is judged that the acceleration G exceeds a vibration detecting reference value GV, judgement is made such that a signal for changing over the brake hydraulic pressure into the pressure reducing mode exists at a first reference value G1, and then when it is judged that the acceleration becomes zero, there is issued a change- over signal for changing over the reference value into a second reference value G2. Thus, in the case of that the reference value is set at the first reference value G1, when the acceleration exceeds the vibration detecting reference value GV, and then directs from the zero to a negative value, the reference value is changed over into the second reference value G2. With this arrangement, the reference level lowers and therefore, even if a pulsative acceleration G is detected,, it hardly reaches the value which is lower than the second reference value G2, thereby it is possible to prevent the reference value from being unnecessarily changed over into the pressure reducing mode.

7. 发明专利

JPH01106763A WHEEL SLIP CONTROL DEVICE 失效
公开(公告)号：JPH01106763A
公开(公告)日：1989-04-24
申请号：JP22549787
申请日：1987-09-09
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： KISHIMOTO MASASHI , ASAMI KEN , SAKAI KAZUNORI
IPC分类号： B60T8/58 , B60T8/172 , B60T8/174 , B60T8/1764
摘要： PURPOSE:To make it possible to efficiently control a brake by providing a detection means for calculating a learning pressure decrease value and a pressure increase value during learning control cycle, and by obtaining a present pressure decrease value during control cycle after learning control cycle so as to estimate a lock limit pressure for computing a desired pressure increase value. CONSTITUTION:Learning pressure decrease and increase value detecting means M2, M3 obtain learning pressure decrease and increase values corresponding to pressures which are increased and decreased under learning control cycle. Further, a present pressure decrease detecting means M4 obtains a present pressure increase value corresponding to a pressure which is decreased during control cycle after leaning control cycle. Further, a desired pressure increase instructing valve computing means M5 computes an initial desired pressure increase value in accordance with the above- mentioned detection values during control cycle during which the present pressure increase value is obtained, and delivers thus obtained value as a desired pressure increase instructing signal. With this arrangement, the pressure is increase to a value near to a lock limit pressure in accordance with the desired pressure increase value even at first time during control cycle after leaning control cycle, thereby it is possible to perform effective brake operation.

8. 发明专利

JPS6460462A ACCELERATING SLIP CONTROL DEVICE 失效
公开(公告)号：JPS6460462A
公开(公告)日：1989-03-07
申请号：JP21624487
申请日：1987-08-28
申请人： TOYOTA MOTOR CORP , NIPPON DENSO CO
发明人： MIYAZAKI YUJI , ASAMI KEN , MINEGISHI HARUMASA , ISE SEIKI , KAMIYA KOJI
IPC分类号： B60T8/175 , B60T8/58 , B60T8/92
摘要： PURPOSE:To enhance reliability at the time of abnormality by stopping the supply of driving energy to braking means when a control signal is output from slip control means for controlling braking means to decrease an accelerating slip for more than a designated time outside a control range. CONSTITUTION:When an accelerating slip occurs during acceleration of a vehicle, braking means M1 is controlled by slip control means M2 to brake driving wheels of the vehicle and decrease the accelerating slip. Supervisory means M3 for detecting that a control signal of the slip control means M2 is output for more than a designated time outside the control range is provided separately from the slip control means M2. When the supervisory means M3 detects that the slip control means M2 outputs a control signal to the braking means M1 for more than a designated time outside the control range, the supply of driving energy to the braking means M1 is stopped by stopping means M4.

9. 发明专利

JPS61261145A TROUBLE DIAGNOSER FOR VEHICLES 失效
公开(公告)号：JPS61261145A
公开(公告)日：1986-11-19
申请号：JP10306685
申请日：1985-05-15
申请人： TOYOTA MOTOR CORP , NIPPON DENSO CO
发明人： ASAMI KEN , SAKAI KAZUNORI , HORI SHINICHI , NAKAJIMA NORIYUKI , OKUDA YUTAKA , TAMURA KIMIO
IPC分类号： B60R16/02 , B60T8/88 , F02D41/22 , G01M17/007 , G01R31/00 , G07C5/08
摘要： PURPOSE:To make trouble information securable and selectable at will, by installing a time information adding device, a reference period inputting device and a selective displaying device there. CONSTITUTION:Each output signal out of a water temperature sensor and so on is inputted into an electronic control circuit 20 via an input port 36. The control circuit 20 calculates and processes the said signal data among a central processing unit 30, a random access memory 32, a timer 33, etc., in comformity with a control program. The result is outputted via an output port 38, driving a fuel injection valve 6 or the like, and display output is given to a trouble display part 28. In addition, by control circuit 20 combines such a function as diagnosing of whether detection signals out of each sensor and motions of various actuators are normal or not, so when some trouble or other is detected, the contents are stored in the RAM 32 being backed up. With this constitution, push switches X and Y for searching for desired time information are operated whereby the trouble information required can be taken out when it is necessary.

10. 发明专利

JPS61218466A ANTISKID CONTROLLER 失效
公开(公告)号：JPS61218466A
公开(公告)日：1986-09-27
申请号：JP6049685
申请日：1985-03-25
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： MAEHATA HIROMI , OKUDA YUTAKA , MASAKI SHOICHI , HIRANO SATORU , ASAMI KEN , SAKAI KAZUNORI
IPC分类号： B60T8/48 , B60T8/172 , B60T8/1763 , B60T8/70 , B60T8/88 , B60T8/94
摘要： PURPOSE:To improve the extent of reliability at the time of trouble happening, by selecting a selector valve between a wheel cylinder and a master cylinder to an interconnecting position when a control signal increasing hydraulic pressure in the wheel cylinder has been outputted in succession for more than the specified time during slip control. CONSTITUTION:A selector valve C is interposingly installed between a master cylinder A feeding hydraulic pressure in response to operation of a brake pedal and a wheel cylinder B being connected to this cylinder A and braking wheels. In addition, there is provided with a hydraulic feed source E which feeds the wheel cylinder B with hydraulic pressure via a control valve D. And, when a wheel slip state is judged at a first controlling device G from output of a car speed detecting device F detecting a wheel revolving speed, the selector valve C is selected to a cutoff position, while the control valve D is controlled to increase or decrease the hydraulic pressure. And, the aforesaid control, when an increment signal for braking hydraulic pressure is outputted to the control valve D in succession for more than the specified time, the selector valve C is selected to an interconnecting position by a second controlling device H.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式