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    • 1. 发明授权
    • Variable-pitch spot welding gun assembly for a welding robot
    • 用于焊接机器人的可变点焊枪组件
    • US5111019A
    • 1992-05-05
    • US613781
    • 1990-11-19
    • Nobutoshi ToriiYasuo NaitoKunio Ueda
    • Nobutoshi ToriiYasuo NaitoKunio Ueda
    • B25J15/00B23K11/11B23K11/31
    • B23K11/312B23K11/314
    • A variable pitch spot welding gun assembly for a welding robot has a fixed base (16) directly attached to the robot wrist (12) of an industrial welding robot, welding transformers (24, 26) fixed to the fixed base (16), a fixed spot welding gun (22) provided apart from the welding transformers (24, 26), a movable spot welding gun (20) provided apart from the welding transfomers (24, 26) and capable of being moved relative to the fixed spot welding gun (22), to adjust a pitch between the fixed spot welding gun (22) and the movable spot welding gun (20), and secondary conductors (44a to 44e) connecting the fixed and movable spot welding guns (22, 90) respectively to the welding transformers (24, 26).
    • PCT No.PCT / JP90 / 00366 Sec。 371日期1990年11月19日 102(e)1990年11月19日PCT PCT 1990年3月19日PCT公布。 出版物WO90 / 11160 日期:1990年10月4日。焊接机器人的可变节点点焊枪组件具有直接附接到工业焊接机器人的机器人手腕(12)上的固定基座(16),固定在工件焊接机器人上的焊接变压器(24,26) 固定基座(16),与焊接变压器(24,26)分开设置的固定点焊枪(22),与焊接变形体(24,26)分开设置并能够移动的可动点焊枪(20) 相对于固定点焊枪(22),调节固定点焊枪(22)和可动点焊枪(20)之间的间距,以及连接固定点焊枪和可移动点焊枪的辅助导体(44a至44e) (22,90)分别连接到焊接变压器(24,26)。
    • 5. 发明授权
    • Method of detecting a collision of machine operating parts driven by
servomotors
    • 检测伺服电机驱动的机器操作部件碰撞的方法
    • US5119006A
    • 1992-06-02
    • US432743
    • 1989-10-25
    • Nobutoshi ToriiYasuo NaitoMasayuki HamuraTetsuaki Kato
    • Nobutoshi ToriiYasuo NaitoMasayuki HamuraTetsuaki Kato
    • B25J9/16B25J19/06G05B19/19G05D1/02
    • B25J19/06B25J19/063B25J9/1676
    • A collision detecting method is provided which is capable of promptly detecting a collision of robot operating parts driven by servomotors, e.g., robot arms, with a foreign object. Prompt detection of such collisions aids in preventing or limiting damage to a machine, etc. by the collision. A digital signal processor of an axis controller (2) of FIG. 1, as part of a software servo system, calculates a velocity command and a torque command in accordance with a movement command supplied from a main computer (1), to periodically carry out servo control for individual axes of the robot. The digital signal processor also determines whether the torque command or a velocity deviation between the velocity command and an actual velocity of a servomotor (13b) is greater than a respective predetermined value. When the torque command or velocity deviation becomes greater than the respective predetermined value, the collision detecting method determines that a collision of the robot operating part (13a) with a foreign object or the like has occurred, and the operation of the servomotor is stopped.
    • PCT No.PCT / JP89 / 00245 Sec。 371日期:1989年10月25日 102(e)日期1989年10月25日PCT 1989年3月7日PCT公布。 出版物WO89 / 08538 日期:1989年9月21日。提供了一种碰撞检测方法,其能够及时检测由伺服电动机(例如机器人手臂)驱动的机器人操作部件与异物的碰撞。 快速检测这种碰撞有助于防止或限制碰撞对机器等造成的损坏。 图1的轴控制器(2)的数字信号处理器。 如图1所示,作为软件伺服系统的一部分,根据从主计算机(1)提供的移动指令计算速度指令和转矩指令,周期性地对机器人的各个轴进行伺服控制。 数字信号处理器还确定扭矩指令或速度指令与伺服电动机(13b)的实际速度之间的速度偏差是否大于相应的预定值。 当转矩指令或速度偏差大于相应的预定值时,碰撞检测方法确定机器人操作部件(13a)与异物等的碰撞已经发生,并且停止伺服电动机的操作。
    • 7. 发明授权
    • Anti-lock brake control system for motor vehicle and brake force control
method thereof
    • 用于机动车辆的防抱死制动控制系统及其制动力控制方法
    • US5964509A
    • 1999-10-12
    • US863366
    • 1997-05-27
    • Yasuo NaitoChiaki FujimotoMitsuhiro Mimura
    • Yasuo NaitoChiaki FujimotoMitsuhiro Mimura
    • B60T8/173B60T8/00B60T8/52
    • B60T8/173
    • An anti-lock brake control system for a motor in which influence of vibration of wheel driving shafts occurring upon braking in the state where the wheels (1a, 1b) are operatively connected to a prime mover such as an internal combustion engine is suppressed to thereby enhance the braking performance of the system. Rotation speed (Vw) of each of the driving wheels (1a to 1d) of the motor vehicle is detected for determining wheel acceleration (Gw). A torsion torque (Tt) applied to a wheel drive shaft is detected. The wheel acceleration (Gw) is corrected with the torsion torque (Tt) for determining a corrected acceleration (Gc). The brake application pressure is controlled in dependence on combinations of two variables, i.e., the corrected acceleration (Gc) and the wheel acceleration (Gw). Owing to detection of the torsion torque (Tt), not only the influence of the vibration of the wheel (1a to 1d) due to the torsion torque (Tt) but also a delay involved in the detection of the torsion torque (Tt) can be taken into consideration in the anti-lock brake control.
    • 在车轮(1a,1b)可操作地连接到诸如内燃机的原动机的状态下,在制动时产生的车轮驱动轴的振动的影响的电动机的防抱死制动控制系统被抑制,从而 提高系统的制动性能。 检测机动车辆的各驱动轮(1a〜1d)的转速(Vw),以确定车轮加速度(Gw)。 检测到施加到轮驱动轴的扭矩(Tt)。 用用于确定校正加速度(Gc)的扭矩(Tt)校正车轮加速度(Gw)。 根据两个变量的组合,即校正后的加速度(Gc)和车轮加速度(Gw)来控制制动施加压力。 由于扭转扭矩(Tt)的检测,不仅由于扭矩(Tt)而导致的车轮(1a〜1d)的振动的影响,而且与扭转扭矩(Tt)的检测相关的延迟也可以 在防抱死制动控制中要考虑到。
    • 8. 发明授权
    • Position detecting method and apparatus for laser sensor
    • 激光传感器位置检测方法及装置
    • US5399870A
    • 1995-03-21
    • US961901
    • 1993-01-08
    • Nobitoshi ToriiRyo NiheiYasuo NaitoHiroshi WakioTakashi Iwamoto
    • Nobitoshi ToriiRyo NiheiYasuo NaitoHiroshi WakioTakashi Iwamoto
    • B25J19/04G01B11/00G01C3/06G01S17/46G05D3/12G01N21/86
    • G01S17/48G01B11/00
    • The present invention relates to a position detecting method and its apparatus that is capable of improving detecting accuracy in a laser sensor using a Charged Coupled Device (CCD) as a light receiving element. A sum of products of an output C.sub.i of each cell in a light receiving element and a cell position X.sub.i is obtained, and the cell outputs C.sub.i are added. When the cell output C.sub.i exceeds a predetermined threshold value, a counter is reset. When the cell output C.sub.i decreases down below the threshold value, the sample hold signal SH is counted. When the counted value of the counter becomes a predetermined value, a division circuit divides the above-obtained sum of products by the above addition value to obtain a center of gravity of the sum of products as a light receiving position. Then, thus obtained value is stored in a latch buffer. When a plurality of light receiving positions are obtained, the control unit picks out only the light receiving position of primary reflection beam from among them to identify the object position. Accordingly, the accuracy of the position detecting operation can be improved, since resolution in position detecting according to the invention is not determined on the unit of cell, but a light receiving position between adjacent cells in CCD can also be detected.
    • PCT No.PCT / JP92 / 00630 Sec。 371日期:1993年1月8日 102(e)日期1993年1月8日PCT提交日期为1992年5月15日PCT公布。 WO92 / 20993 PCT出版物 日期:1992年11月26日。本发明涉及一种位置检测方法及其装置,其能够提高使用带电耦合器件(CCD)作为光接收元件的激光传感器的检测精度。 获得光接收元件中的每个单元的输出Ci和单元位置Xi的乘积之和,并且增加单元输出Ci。 当单元输出Ci超过预定阈值时,计数器被复位。 当单元输出Ci降低到低于阈值时,对样本保持信号SH进行计数。 当计数器的计数值变为预定值时,除法电路将上述乘积之和除以上述加法值,得到作为光接收位置的乘积之和的重心。 然后,将这样获得的值存储在锁存缓冲器中。 当获得多个光接收位置时,控制单元从其中仅拾取一次反射光束的光接收位置以识别对象位置。 因此,能够提高位置检测动作的精度,因为根据本发明的位置检测的分辨率未以单元为单位,而且还可以检测CCD中的相邻单元之间的光接收位置。