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    • 1. 发明授权
    • Input circuit of a fork lift truck control system for a fork lift truck
    • 用于叉车的叉车控制系统的输入电路
    • US4499541A
    • 1985-02-12
    • US364401
    • 1982-03-31
    • Katsumi YukiSusumu YoshidaMineo OzekiYasuyuki MiyazakiMasaru Kawamata
    • Katsumi YukiSusumu YoshidaMineo OzekiYasuyuki MiyazakiMasaru Kawamata
    • B66F9/08B66F9/075B66F9/24G05B19/23G06F15/50B66F9/06
    • G05B19/23B66F9/0755B66F9/24G05B2219/34053G05B2219/34215G05B2219/34466G05B2219/37462
    • An improved fork lift truck control system using a microcomputer, which comprises a sensing unit including a first sensor for detecting a lift height of a fork above its lowest position and a second sensor for detecting a tilting angle of an upright with respect to a neutral position of the upright including an input interface circuit for interfacing the sensing unit and control unit which has: (a) a lifting height counting circuit which counts the number of pulses produced on a basis of two photo-converted electrical signals fed from two photocouplers constituting the first sensor, the signals having a phase difference of 90.degree. from each other, so that an accurate measurement of the lifting height of the fork can be made; (b) an analog-to-digital converter which produces a bit string according to an output signal from the second sensor; and (c) an abnormal detection facility which detects a defective analog-to-digital converter and second sensor by comparing the bit string presently outputted from the analog-to-digital converter with each of predetermined bit strings that would be produced if the analog-to-digital converter operates normally.
    • 一种改进的使用微型计算机的叉车控制系统,其包括检测单元,该传感单元包括用于检测在其最低位置之上的叉的提升高度的第一传感器和用于检测竖直件相对于中立位置的倾斜角度的第二传感器 包括用于接口感测单元和控制单元的输入接口电路,该输入接口电路具有:(a)升高高度计数电路,其对基于构成两个光耦合器的两个光电耦合器馈送的两个光转换电信号产生的脉冲数进行计数 第一传感器,信号彼此具有90°的相位差,从而可以精确地测量叉子的提升高度; (b)根据来自第二传感器的输出信号产生位串的模数转换器; 以及(c)异常检测设备,其通过将当前从模数转换器输出的位串与将被产生的预定位串中的每一个进行比较来检测有缺陷的模拟 - 数字转换器和第二传感器, 数模转换器正常工作。
    • 2. 发明授权
    • Control device for loading and unloading mechanism
    • 装卸机构控制装置
    • US4517645A
    • 1985-05-14
    • US364402
    • 1982-03-31
    • Katsumi YukiSusumu YoshidaMineo OzekiYasuyuki MiyazakiMasaru Kawamata
    • Katsumi YukiSusumu YoshidaMineo OzekiYasuyuki MiyazakiMasaru Kawamata
    • B66F9/075B66F9/24G05B19/23G05B19/414G06F15/50B66F9/06
    • B66F9/24B66F9/0755G05B19/23G05B19/4142G05B2219/34215G05B2219/41309
    • A control device for loading and unloading mechanism adapted to be incorporated in a fork lift truck comprises a sensor unit 100 including a lifting height sensor 102 and a load sensor 106, a control unit 200 comprising a control command producing circuit 240 constituted by a microcomputer 230 producing a control command on the basis of comparing calculation between the output of the sensor unit 100 and the concerned data stored in the microcomputer 230, a servomotor driving circuit 322' responsive to the control command indicative of a valve opening angle, and a hydraulic pressure driving circuit 340 for actuating a lift cylinder in accordance with the output of the servomotor driving circuit 322'. The control device is constituted so that, when the work for piling or unloading a load on a shelf is effected based on the stored lifting height data, the two positions required for piling and unloading can be stored in the same address allotted to the corresponding shelf can be stored. The control device is constituted so that, when lifting height data is stored in the microcomputer, an indication for confirming data storage is added to the stored lifting height data, thereby enabling to prevent an automatic lifting height control from being erroneously effected.
    • 用于装载在叉式起重车中的装卸机构的控制装置包括:传感器单元100,包括升降高度传感器102和负载传感器106;控制单元200,包括由微计算机230构成的控制指令产生电路240 根据比较传感器单元100的输出和存储在微计算机230中的有关数据之间的计算,产生控制命令,响应于指示阀打开角度的控制命令的伺服电动机驱动电路322'和液压 驱动电路340,用于根据伺服电机驱动电路322'的输出致动提升缸。 控制装置构成为:当基于所存储的升降高度数据实现堆放或卸载货架上的载荷的工作时,堆放所需的两个位置可以存储在分配给相应货架的相同地址中 可以存储。 控制装置构成为:当提升高度数据被存储在微型计算机中时,向所存储的提升高度数据添加用于确认数据存储的指示,从而能够防止自动提升高度控制被错误地实现。
    • 3. 发明授权
    • Control device for loading and unloading mechanism
    • 装卸机构控制装置
    • US4509127A
    • 1985-04-02
    • US364403
    • 1982-03-31
    • Katsumi YukiSusumu YoshidaMineo OzekiYasuyuki MiyazakiMasaru Kawamata
    • Katsumi YukiSusumu YoshidaMineo OzekiYasuyuki MiyazakiMasaru Kawamata
    • B66F9/075B66F9/24G06F15/20G06G7/48
    • B66F9/24B66F9/0755
    • A control device for loading and unloading mechanism adapted to be incorporated in a fork lift truck comprises a sensor unit 100 including a lifting height sensor 102, a control unit 200 comprising a control command producing circuit 240 constituted by a microcomputer 230 producing a control command on the basis of comparing calculation between the output of the sensor unit 100 and the concerned data stored in the microcomputer 230, and a driving unit 300 producing a driving output signal so as to the lifting height of the fork 18 in accordance with the control command fed from the control unit 200. The control device includes a component operable for inhibiting storage of sampled lifting height data when the actual lifting height data are not within an allowed range, thereby to prevent erroneous operation based on erroneous data and to effect smooth follow-up speed control to the target height when automatic lifting height control is effected. The control device further comprises structure for slowly stopping the fork at the time of the automatic lifting height control. Prior to the automatic lifting height control, when lifting height data is stored in the microcomputer 230, the control device is designed so that lifting height data within a predetermined range can be sampled. Furthermore, the valve opening angle of the control valve for actuating a lift cylinder 346 is limited to a predetermined range, thereby stabilizing a lifting height speed.
    • 用于装载在叉式起重车中的装卸机构的控制装置包括:传感器单元100,包括提升高度传感器102;控制单元200,包括由微型计算机230构成的控制指令产生电路240,该控制指令产生电路240产生控制命令 比较传感器单元100的输出与存储在微计算机230中的有关数据之间的计算的基础,以及驱动单元300,该驱动单元300根据控制命令进行驱动输出信号以提升叉18的提升高度 控制装置包括:当实际提升高度数据不在允许范围内时可操作用于禁止采样提升高度数据的存储,从而防止基于错误数据的错误操作并实现平稳跟踪 实现自动提升高度控制时的速度控制到目标高度。 控制装置还包括在自动提升高度控制时缓慢停止叉的结构。 在自动提升高度控制之前,当提升高度数据存储在微型计算机230中时,控制装置被设计成可以对预定范围内的提升高度数据进行采样。 此外,用于致动提升缸346的控制阀的开阀角限制在预定范围内,从而稳定提升高度。
    • 4. 发明授权
    • Control device for loading and unloading mechanism
    • 装卸机构控制装置
    • US4520443A
    • 1985-05-28
    • US364404
    • 1982-03-31
    • Katsumi YukiSusumu YoshidaMineo OzekiYasuyuki MiyazakiMasaru Kawamata
    • Katsumi YukiSusumu YoshidaMineo OzekiYasuyuki MiyazakiMasaru Kawamata
    • B66F9/075B66F9/24B66F9/06
    • B66F9/0755B66F9/24
    • A control device for loading and unloading mechanism adapted to be incorporated in a fork lift truck comprises a sensor unit 100 including a lifting height sensor 102, a tilting angle sensor 104, and a load sensor 106, a control unit 200 comprising a control command producing circuit 240 constituted by a microcomputer 230 producing a control command on the basis of comparing calculation between the output of the sensor unit 100 and the concerned data stored in the microcomputer 230. The control device further comprises actuators 322, 324 including servomotor driving circuit therein responsive to the control command fed from the control unit 200, and a hydraulic pressure driving circuit 340 for hydraulically controlling a lift cylinder 346 and a tilt cylinder 348 in accordance with the corresponding output of each actuator, respectively. The control device is capable of effecting a automatic running attitude control due to the data stored in the microcomputer 230. The control device further makes it possible to automatically effect a series of sequential loading and unloading work including a lifting height operation and a tilting angle control. Preferably, the control device comprises a means for manually adjusting an attitude angle of the fork during loading and unloading work. Further, in view of safety, the control device is constituted so that an adjustable running attitude angle of the fork is limited to a predetermined region.
    • 用于装载在叉式起重车中的装卸机构的控制装置包括:传感器单元100,包括提升高度传感器102,倾斜角度传感器104和负载传感器106;控制单元200,包括产生 电路240由微型计算机230构成,其基于比较传感器单元100的输出和存储在微型计算机230中的有关数据之间的计算产生控制命令。控制装置还包括致动器322,324,其包括响应于伺服电动机驱动电路 到控制单元200输入的控制指令,以及液压驱动电路340,用于分别根据每个致动器的相应输出液压控制提升缸346和倾斜缸348。 控制装置由于存储在微型计算机230中的数据而能够实现自动运行姿态控制。控制装置还可以自动执行一系列的顺序加载和卸载工作,包括提升高度操作和倾斜角度控制 。 优选地,控制装置包括用于在装载和卸载工作期间手动调节叉的姿态角的装置。 此外,为了安全起见,控制装置构成为使叉的可调节行驶姿势角被限制在规定的区域。
    • 6. 发明授权
    • System for automatically controlling movement of unmanned vehicle and
method therefor
    • 用于自动控制无人驾驶车辆运动的系统及其方法
    • US4716530A
    • 1987-12-29
    • US704522
    • 1985-02-22
    • Hiroshi OgawaYasuyuki MiyazakiSusumu YoshidaShinichi Sasaki
    • Hiroshi OgawaYasuyuki MiyazakiSusumu YoshidaShinichi Sasaki
    • B61L3/00G05D1/02G06F19/00G06F15/50
    • G05D1/0265G05D1/0234G05D1/0242G05D2201/0216
    • A system for automatically controlling movement of an unmanned vehicle and method therefor wherein one or more than one marker is installed between each branched corner formed by a guide road through which the vehicle passes for providing an indicating means for the vehicle to accelerate, decelerate, or turn the branched corner and the vehicle includes detecting means for detecting the presence of the marker and outputting a signal indicating that the marker is located at the corresponding position and a controller in which data and main program on a pattern of turning the movement of the vehicle at any given branched corner and vehicle speed control according to the detected number of markers in accordance with a route of movement from a starting point which is loaded prior to the start of the vehicle so that the control for turning the movement direction of the vehicle and vehicle speed is carried out by fetching the corresponding above-described data and main program of the pattern according to the number of detected markers. Furthermore, at least one timer is provided in the controller which outputs an interrupt signal so that an interrupt program is executed for controlling an on-and-off period of steering and/or movement motor chopper circuit with the main program being temporarily halted.
    • 一种用于自动控制无人驾驶车辆的运动的系统及其方法,其中一个或多于一个的标记被安装在车辆通过的导轨之间形成的每个分支角之间,以提供用于车辆的指示装置加速,减速或 转动分支角,并且车辆包括用于检测标记的存在并输出指示标记位于相应位置的信号的检测装置,以及控制器,其中数据和主程序转动车辆的运动 在根据检测到的标记数量的任何给定的分支角和车辆速度控制下,根据从车辆开始之前装载的起点的运动路线,使得用于转动车辆的运动方向的控制和 通过取出相应的上述数据和主程序来执行车速 根据检测到的标记的数量。 此外,在控制器中提供至少一个定时器,其输出中断信号,使得执行中断程序以控制主程序暂时停止的转向和/或运动马达斩波电路的导通和关闭时段。
    • 7. 发明授权
    • Unmanned vehicle control system and method
    • 无人驾驶车辆控制系统及方法
    • US4665489A
    • 1987-05-12
    • US704523
    • 1985-02-22
    • Tetsuji SuzukiSusumu YoshidaHiroshi OgawaYasuyuki Miyazaki
    • Tetsuji SuzukiSusumu YoshidaHiroshi OgawaYasuyuki Miyazaki
    • G05D1/02G06F15/50
    • G05D1/0265G05D2201/0216
    • An unmanned vehicle is so controlled as to travel along a guide line in response to command signals transmitted from a fixed host computer. The vehicle includes a driving motor, a steering motor, a driving motor chopper, a steering motor chopper, a speed detector, an offset (misalignment away from the guide line) detector, a main CPU, etc. Since detected offset values are directly feedbacked to the main CPU through a steering control interface and the steering motor chopper is directly controlled by the main CPU through the steering interface, it is possible to eliminate other CPUs conventionally provided for turning on or off both the choppers, separately. Further, since the duty ratio of the steering motor chopper is controlled by taking into account various factors such as offset values, offset increment values, vehicle speeds, steering correcting directions, etc., it is possible to stably correct vehicle steering misalignment at high response speed even when the vehicle is travelling at high speed along the guide line.
    • 无人驾驶车辆被控制成响应于从固定主机发送的命令信号而沿着引导线行进。 车辆包括驱动电动机,转向电动机,驱动电动机斩波器,转向电动机斩波器,速度检测器,偏移(远离引导线的偏移)检测器,主CPU等。由于检测到的偏移值被直接反馈 通过转向控制接口到主CPU,并且转向马达斩波器由主CPU通过转向接口直接控制,可以分别消除通常设置用于打开或关闭斩波器的其他CPU。 此外,由于通过考虑偏移值,偏移增量值,车辆速度,转向修正方向等各种因素来控制转向马达斩波器的占空比,因此可以在高响应时稳定地校正车辆转向失准 即使当车辆沿着引导线高速行驶时也是如此。
    • 8. 发明授权
    • Unmanned vehicle control system and method
    • 无人驾驶车辆控制系统及方法
    • US4665487A
    • 1987-05-12
    • US704421
    • 1985-02-22
    • Hiroshi OgawaYasuyuki MiyazakiSusumu Yoshida
    • Hiroshi OgawaYasuyuki MiyazakiSusumu Yoshida
    • G05D1/02G06F15/50
    • G05D1/0265G05D2201/0216
    • An unmanned vehicle is so controlled as to travel along a guide line in response to command signals transmitted from a fixed host computer. The steering misalignment (offset) of the vehicle is corrected by a steering DC motor driven by an AC current, the duty ratio of which is adjusted by a steering motor chopper circuit. Since dead zones within which the misalignment is no longer corrected and duty ratio calculating expression on which chopper duty ratio is determined according to a detected offset are both classified by vehicle speed, it is possible to stably correct vehicle steering misalignment at high response speed even when the vehicle is travelling at high speed along the guide line. Further, when the dead zone and the calculating expression are both classified by discriminating an initial offset from the succeeding offset, it is possible to not only to prevent the vehicle from travelling zigzag along the guide line, but also to reduce the number of rush currents generated in the chopper circuit.
    • 无人驾驶车辆被控制成响应于从固定主机发送的命令信号而沿着引导线行进。 通过由交流电流驱动的转向直流电动机来修正车辆的转向不对准(偏移),该交流电流的占空比由转向电动机斩波电路调节。 由于不再校正其中不对准的死区和根据检测到的偏移来确定斩波器占空比的占空比计算表达式都被车速分类,所以即使在高速响应速度下也可以稳定地校正车辆转向失准 车辆沿着引导线高速行驶。 此外,当通过识别起始偏移与后续偏移来分类死区和计算表达式时,不仅可以防止车辆沿着引导线行之字形,还可以减少冲击电流的数量 在斩波电路中产生。