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1. 发明授权

US5369349A Electric motor control system 失效
标题翻译：电动机控制系统
公开(公告)号：US5369349A
公开(公告)日：1994-11-29
申请号：US845229
申请日：1992-03-03
申请人： Yoshikazu Tsuchiya , Osamu Tsurumiya , Makoto Murata , Masataka Izawa , Yukihiro Fujiwara
发明人： Yoshikazu Tsuchiya , Osamu Tsurumiya , Makoto Murata , Masataka Izawa , Yukihiro Fujiwara
IPC分类号： H02P29/00 , B62D5/04 , H02H7/08 , H02P7/29 , H02P5/28
CPC分类号： B62D5/046 , B62D5/0487 , H02H7/0838 , Y10S388/903
摘要： An electric motor control system has a motor driver comprising a bridge of switching elements, a pair of failure detectors, and a microcomputer. The motor driver is connected between a battery and an electric motor that is connected between the switching elements. The switching elements are turned on and off according to drive pulse signals supplied from the microcomputer for supplying a pulsed current to the electric motor. The failure detectors monitor the electric energy supplied to the electric motor to detect a period of time in which the supplied electric energy is free of pulses, and supply a signal indicative of the detected period of time to the microcomputer. Based on the signal from the failure detectors, the microcomputer detects a failure when the detected period of time exceeds a predetermined period of time.
摘要翻译：电动机控制系统具有电动机驱动器，其包括开关元件桥，一对故障检测器和微计算机。马达驱动器连接在连接在开关元件之间的电池和电动马达之间。开关元件根据从微计算机提供的驱动脉冲信号而导通和截止，以向电动机提供脉冲电流。故障检测器监视提供给电动机的电能，以检测所提供的电能没有脉冲的时间段，并向微型计算机提供表示检测到的时间段的信号。基于来自故障检测器的信号，当检测到的时间段超过预定时间时，微计算机检测到故障。

2. 发明授权

US5261501A Four-wheel steering system with steering motor short circuit control 失效
标题翻译：四轮转向系统带转向电机短路控制
公开(公告)号：US5261501A
公开(公告)日：1993-11-16
申请号：US925930
申请日：1992-08-10
申请人： Yoshikazu Tsuchiya , Osamu Tsurumiya , Masataka Izawa , Yukihiro Fujiwara , Makoto Murata
发明人： Yoshikazu Tsuchiya , Osamu Tsurumiya , Masataka Izawa , Yukihiro Fujiwara , Makoto Murata
IPC分类号： B60L11/18 , B62D5/04 , B62D6/00 , B62D7/14 , B62D7/15 , B62D101/00 , B62D113/00 , B62D117/00 , G05G5/05 , H02K23/00
CPC分类号： B62D7/1581 , B60L11/18 , B60L11/1805 , B60L3/0084 , B62D5/0487 , B62D7/148 , Y02T10/7005
摘要： A four-wheel steering system on an automobile has front road wheels steerable by a steering wheel and rear road wheels steerable by an electric motor and normally biased to a neutral steering position by a spring. The electric motor is energized by a motor driver to steer the rear road wheels through an angle depending on running conditions of the automobile. The electric motor has a winding and two sets of brushes or connecting terminals connected to opposite terminals of the winding. One of the two sets of connecting terminals is connected to the motor driver. The other of the two sets of connecting terminals is connected to a short-circuiting circuit parallel to the motor driver. In the event of a failure, a controller controls the short-circuiting circuit to short-circuit the winding of the motor through the other set of connecting terminals. The short-circuiting circuit comprises a plurality of relays having respective contacts connected in series between the connecting terminals of the other set. The motor driver can also short-circuit the winding of the motor through the one set of connecting terminals in the event of a failure.
摘要翻译：汽车上的四轮转向系统具有可由方向盘转向的前轮和由电动机控制的后轮，并且通过弹簧通常偏压到中立转向位置。电动机由马达驱动器通电，以根据汽车的运行状况转动后轮。电动机具有绕组和连接到绕组的相对端子的两组电刷或连接端子。两组连接端子中的一个连接到电机驱动器。两组连接端子中的另一组连接到与电动机驱动器平行的短路电路。在发生故障的情况下，控制器控制短路电路以通过另一组连接端子短路电动机的绕组。短路电路包括多个继电器，其具有在另一组的连接端子之间串联连接的各个触点。发生故障时，电机驱动器还可以通过一组连接端子使电机的绕组短路。

3. 发明授权

US5219035A Front and rear wheel steering system for motor vehicles 失效
标题翻译：汽车前后轮转向系统
公开(公告)号：US5219035A
公开(公告)日：1993-06-15
申请号：US801548
申请日：1991-12-02
申请人： Osamu Tsurumiya , Masataka Izawa , Makoto Murata , Masaru Abe
发明人： Osamu Tsurumiya , Masataka Izawa , Makoto Murata , Masaru Abe
IPC分类号： B62D5/04 , B62D6/00 , B62D7/14 , B62D7/15 , B62D101/00 , B62D113/00 , B62D117/00
CPC分类号： B62D7/1581 , B62D7/148
摘要： A front and rear wheel steering system for a motor vehicle with steerable front and rear road wheels includes a front wheel steering mechanism for steering the front road wheels in response to a steering action effected by a steering wheel of the motor vehicle, a neutral positioning mechanism for normally urging the rear road wheels under a resilient force to a steering neutral position, a rear wheel steering mechanism having an electric motor for steering the rear road wheels out of the steering neutral position, and a controller for controlling an electric current supplied to the electric motor depending on the steering action of the steering wheel. The controller reduces the electric current supplied to the electric motor and subsequently holds the reduced electric current while the motor vehicle is at rest and no steering action is effected by the steering wheel. Preferably, the controller controls the electric current supplied to the electric motor to reach a value which enables the electric motor to produce an output force smaller than the resilient force produced by the neutral positioning mechanism.
摘要翻译：用于具有可转向的前轮和后轮的机动车辆的前轮和后轮转向系统包括：前轮转向机构，用于响应于机动车辆的方向盘进行的转向动作来转向前轮;中立定位机构为了通常在向转向中立位置的弹力作用下推动后轮，具有用于将后车轮转向转向中立位置的电动机的后轮转向机构，以及控制器，用于控制供给至电动机取决于方向盘的转向动作。控制器减少供应给电动机的电流，并且随后在机动车辆静止时保持减小的电流，并且方向盘不执行转向动作。优选地，控制器控制供给电动机的电流达到能够使电动机产生小于由中立定位机构产生的弹力的输出力的值。

4. 发明授权

US5189616A Four-wheel steering system for motor vehicle 失效
标题翻译：汽车四轮转向系统
公开(公告)号：US5189616A
公开(公告)日：1993-02-23
申请号：US616408
申请日：1990-11-21
申请人： Osamu Tsurumiya , Masataka Izawa , Masaru Abe , Ikuo Nonaga
发明人： Osamu Tsurumiya , Masataka Izawa , Masaru Abe , Ikuo Nonaga
IPC分类号： B62D6/00 , B62D7/14 , B62D7/15 , B62D101/00 , B62D113/00
CPC分类号： B62D7/1581 , B62D7/159
摘要： A four-wheel steering system for a motor vehicle steers motor vehicle rear wheels based on a steering angle ratio between front and rear wheels based on a vehicle speed, and a front wheel steering angle. The steering angle ratio is of a negative value or a relatively small positive value when the vehicle speed is in a medium speed range or a high speed range and the front wheel steering angle is in a relatively small range. The motor vehicle is controlled to turn well when the front wheel steering angle is in the relative small range while the motor vehicle is running in the medium and high speed ranges.
摘要翻译：用于机动车辆的四轮转向系统基于车速和前轮转向角度，基于前轮和后轮之间的转向角比来转向机动车辆后轮。当车速处于中速范围或高速范围并且前轮转向角处于相对小的范围内时，转向角比为负值或相对较小的正值。当机动车辆在中等速度范围内行驶时，前轮转向角度处于相对较小的范围内，机动车被控制得很好。

5. 发明授权

US5202830A Motor drive control circuit 失效
标题翻译：电机驱动控制电路
公开(公告)号：US5202830A
公开(公告)日：1993-04-13
申请号：US498209
申请日：1990-03-22
申请人： Osamu Tsurumiya , Masataka Izawa
发明人： Osamu Tsurumiya , Masataka Izawa
IPC分类号： B62D5/04 , B62D7/14
CPC分类号： B62D5/0481 , B62D7/148
摘要： A PWM motor drive control circuit for an electric power steering system, comprising: a bridge circuit having four arms each defined by a transistor; a main control unit for producing a continual direction control signal and a torque control signal of a variable duty ratio to activate the electric motor in a desired direction at a desired torque according to a steering command signal supplied thereto; a sub control unit for producing a second direction control signal according to the steering command signal; and a gate drive control circuit for transmitting the first direction control signal and the torque control signal to the transistors only when the first direction control signal produced by the primary control unit coincides with the second direction control signal produced by the sub control unit. Thereby, the reliability of an electric motor powered steering system can be improved with a simple circuit structure even when the torque control signal consists of an extremely high frequency variable duty ratio signal.
摘要翻译：一种用于电动助力转向系统的PWM电动机驱动控制电路，包括：具有由晶体管限定的四个臂的桥接电路; 主控制单元，用于产生连续方向控制信号和可变占空比的转矩控制信号，以根据提供给其的转向命令信号以期望的转矩在期望的方向上激活电动机; 子控制单元，用于根据转向命令信号产生第二方向控制信号; 以及栅极驱动控制电路，用于仅当由主控制单元产生的第一方向控制信号与副控制单元产生的第二方向控制信号一致时，将第一方向控制信号和转矩控制信号发送到晶体管。由此，即使转矩控制信号由极高频率的可变占空比信号构成，也能够通过简单的电路结构来提高电动机动力转向系统的可靠性。

6. 发明授权

US4939653A Method of and apparatus for controlling steering operation of a motor vehicle with steerable front and rear wheels 失效
标题翻译：用于控制具有可转向的前轮和后轮的机动车辆的转向操作的方法和装置
公开(公告)号：US4939653A
公开(公告)日：1990-07-03
申请号：US226070
申请日：1988-07-29
申请人： Osamu Tsurumiya , Masaru Abe , Yoshimichi Kawamoto , Takashi Kohata , Ikuo Nonaga , Masataka Izawa
发明人： Osamu Tsurumiya , Masaru Abe , Yoshimichi Kawamoto , Takashi Kohata , Ikuo Nonaga , Masataka Izawa
IPC分类号： B62D7/14 , B62D7/15
CPC分类号： B62D7/148 , B62D7/1581 , B62D7/159
摘要： The steering operation of a motor vehicle with steerable front and rear road wheels is controlled by steering the rear road wheels with an actuator such as an electric motor which produces a steering force dependent on a deviation of the actual rear wheel steering angle from a target rear wheel steering angle. The rear road wheels are thus controlled with a characteristic dependent on the coefficient of friction of a road on which the motor vehicle travels and the steering speed at which the motor vehicle is steered. Typically, a steering control method comprises the steps of detecting the steering angle of the front road wheels, determining a target steering angle for the rear wheels based on the steering angle of the front road wheels, detecting the actual steering angle of the rear road wheels, calculating a steering angle deviation of the actual rear wheel steering angle from the target steering angle, determining a rear wheel steering force based on the steering angle deviation, and steering the rear road wheels to the target steering angle with the determined rear wheel steering force.
摘要翻译：具有可转向的前轮和后轮的机动车辆的转向操作通过用诸如电动机的致动器转向后轮来控制，该电动机产生取决于实际后轮转向角与目标后方的偏差的转向力车轮转向角。因此，后轮车轮的控制特性取决于机动车辆行驶的道路的摩擦系数和机动车辆转向的转向速度。通常，转向控制方法包括以下步骤：检测前轮的转向角，基于前轮的转向角确定后轮的目标转向角，检测后轮的实际转向角计算出实际后轮转向角与目标转向角的转向角偏差，基于转向角偏差来确定后轮转向力，并且通过所确定的后轮转向力将后轮转向目标转向角。

7. 发明授权

US06639887B1 Optical apparatus with laser light receiver and focus error generator in the same layer 失效
标题翻译：具有激光接收器和聚焦误差发生器的光学装置在同一层
公开(公告)号：US06639887B1
公开(公告)日：2003-10-28
申请号：US09492346
申请日：2000-01-27
申请人： Masataka Izawa
发明人： Masataka Izawa
IPC分类号： G11B712
CPC分类号： G11B7/124 , G11B7/22
摘要： An optical integrated apparatus is used in an optical pickup apparatus which irradiates a light emitted by a light emitting device to an optical information record medium, on which record information is recorded, and receives a reflection light reflected from the optical information record medium. The optical integrated apparatus is provided with: a substrate; a light wave coupler for respectively generating a transmitted light and a guided light out of the reflection light; a light guide path for propagating the guided light; a first light receiving portion for receiving the transmitted light; and a second light receiving portion for receiving a radiant light which is generated out of the guided light and is directed toward the substrate due to a phase matching from the light guide path. The light wave coupler, the light guide path, the first light receiving portion and the second light receiving portion are laminated on the substrate. The first light receiving portion and the second light receiving portion are formed in a same layer on the substrate.
摘要翻译：一种光学集成装置用于将由发光装置发射的光照射到其上记录有记录信息的光学信息记录介质并接收从光学信息记录介质反射的反射光的光学拾取装置。光学集成装置设置有：基板; 用于分别从反射光产生透射光和引导光的光波耦合器; 用于传播引导光的导光路径; 用于接收透射光的第一光接收部分; 以及第二光接收部分，用于接收从导光路径产生的辐射光，并且由于与导光路径的相位匹配而被引向基板。光波耦合器，导光路径，第一光接收部分和第二光接收部分层叠在基板上。第一光接收部分和第二光接收部分在基板上形成在同一层中。

8. 发明授权

US5295005A Liquid crystal display device with improved convergence efficiency and converting reflector of the same 失效
标题翻译：液晶显示装置具有改善的收敛效率和转换其反射器
公开(公告)号：US5295005A
公开(公告)日：1994-03-15
申请号：US771000
申请日：1991-10-01
申请人： Masami Nishida , Masataka Izawa , Kunimoto Tsuchiya
发明人： Masami Nishida , Masataka Izawa , Kunimoto Tsuchiya
IPC分类号： F21V7/04 , G02B27/14 , G02F1/1335 , G02F1/13357 , H04N9/31 , G02F1/13 , G02B5/08 , G03B21/14
CPC分类号： G02B27/145 , F21V7/04 , G02B27/1046 , H04N9/315
摘要： A liquid crystal display device comprises a converging reflector, a liquid crystal panel, a condenser lens and a projection lens, wherein a correlation between these optical parts and structure of sizes of the optical parts is considered. Accordingly, a convergence efficiency of the device as whole system can be improved. A converging reflector comprises a light source and a reflecting mirror reflecting a light from the light source, wherein a curved plane shape of the mirror is offset radially to the same length as a radius of a light emitting tube of the light source. Accordingly, a convergence efficiency of the converging reflector can be improved.
摘要翻译：液晶显示装置包括会聚反射器，液晶面板，聚光透镜和投影透镜，其中考虑了这些光学部件之间的相关性和光学部件的尺寸的结构。因此，可以提高作为整体系统的装置的收敛效率。会聚反射器包括光源和反射来自光源的光的反射镜，其中反射镜的曲面形状径向偏离与光源的发光管的半径相同的长度。因此，可以提高会聚反射体的会聚效率。

9. 发明授权

US5260830A Three color separation/synthesis mirror device 失效
标题翻译：三色分离/合成镜装置
公开(公告)号：US5260830A
公开(公告)日：1993-11-09
申请号：US960731
申请日：1992-10-14
申请人： Masami Nishida , Masataka Izawa , Manabu Akagi , Masayuki Akiyama
发明人： Masami Nishida , Masataka Izawa , Manabu Akagi , Masayuki Akiyama
IPC分类号： G03B33/12 , G02B5/08 , G02B27/00 , G02B27/14 , H04N9/097 , H04N9/31 , G02B27/10 , G02B5/06
CPC分类号： G02B27/102 , G02B27/0018 , G02B27/1073 , G02B27/149 , G02B5/08 , H04N9/097 , H04N9/3105 , H04N9/315
摘要： A three color separation/synthesis mirror device for a liquid crystal projector comprises four dichroic mirrors whose joint part has a V-shaped notch in which a higher refractive index is filled thereby to eliminate stray lights. The device may have a prism at the joint part for causing an emitted light to be parallel with an incident light.
摘要翻译：用于液晶投影仪的三色分离/合成镜装置包括四个分色镜，其接合部分具有其中填充较高折射率的V形凹口，从而消除杂散光。该装置可以在接合部处具有用于使发射的光与入射光平行的棱镜。

10. 发明授权

US5881836A Electric power steering apparatus 失效
标题翻译：电动助力转向装置
公开(公告)号：US5881836A
公开(公告)日：1999-03-16
申请号：US832949
申请日：1997-04-04
申请人： Mitsuhiko Nishimoto , Kazuyuki Yoshida , Takahiro Aoki , Masataka Izawa , Mitsunori Kawashima
发明人： Mitsuhiko Nishimoto , Kazuyuki Yoshida , Takahiro Aoki , Masataka Izawa , Mitsunori Kawashima
IPC分类号： B62D6/00 , B62D5/04 , B62D101/00 , B62D117/00 , B62D119/00 , B62D137/00
CPC分类号： B62D5/0466
摘要： An electric power steering apparatus which quickly returns the steering wheel to the neutral position with a satisfactory steering feeling by switching a steering wheel return control for assisting the steering wheel return and a steering wheel convergence control for converging the steering wheel to the neutral position by braking a motor, according to the steering condition such as the rotational speed of the steering wheel is fast or slow when returning the steering wheel to the neutral position even when the vehicle speed is equal.
摘要翻译：一种电动助力转向装置，通过切换用于辅助方向盘返回的方向盘返回控制和用于通过制动将方向盘收敛到中立位置的方向盘收敛控制，使方向盘以令人满意的转向感觉快速返回中立位置当车速相等时，根据诸如方向盘的转速的转向条件的马达在将方向盘返回至中立位置时是快或慢。

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