公开(公告)号：US5934879A

公开(公告)日：1999-08-10

申请号：US771195

申请日：1996-12-20

申请人： Shigetoshi Konno ,  Toichi Hirata ,  Genroku Sugiyama ,  Shigehiro Yoshinaga ,  Youichi Kowatari ,  Kouji Ishikawa

发明人： Shigetoshi Konno ,  Toichi Hirata ,  Genroku Sugiyama ,  Shigehiro Yoshinaga ,  Youichi Kowatari ,  Kouji Ishikawa

IPC分类号： E02F9/22 ,  F04B49/06 ,  F04B49/00

CPC分类号： E02F9/2246 ,  E02F9/2235 ,  E02F9/2296 ,  B60W2710/0644

摘要： An engine torque, which corresponds to a target engine speed inputted in a controller, is determined by a functional computing function unit. A torque correction value is added to the engine torque, followed by the multiplication with a constant. The product is divided by a pump delivery pressure to determine a pump displacement. A target tilting corresponding to this value is determined by another functional computing function unit, and is then compared with another target tilting which has been determined from a negative control pressure. The smaller one is selected and is outputted as a target tilting. The torque correction value is set at an EEPROM through an input device as desired. Selection of a negative value as the torque correction value makes it possible to prevent occurrence of stalling.

摘要翻译： 对应于输入到控制器中的目标发动机转速的发动机扭矩由功能计算功能单元确定。 将扭矩校正值加到发动机转矩上，然后与常数相乘。 产品除以泵的输送压力以确定泵的排量。 对应于该值的目标倾斜由另一功能计算功能单元确定，然后与从负控制压力确定的另一目标倾斜进行比较。 选择较小的一个作为目标倾斜输出。 转矩校正值根据需要通过输入装置设置在EEPROM上。 选择负值作为转矩校正值使得可以防止停止的发生。

公开(公告)号：US5813311A

公开(公告)日：1998-09-29

申请号：US771158

申请日：1996-12-20

申请人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Shigehiro Yoshinaga ,  Kouji Ishikawa ,  Youichi Kowatari ,  Tsuyoshi Nakamura

发明人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Shigehiro Yoshinaga ,  Kouji Ishikawa ,  Youichi Kowatari ,  Tsuyoshi Nakamura

IPC分类号： E02F9/20 ,  E02F9/22 ,  F15B11/16

CPC分类号： E02F9/2285 ,  E02F9/2228 ,  E02F9/2282

摘要： A controller 520 has a data portion 520c in which the relationship between a pump delivery pressure and a target opening area of a variable throttle 300a of a control valve 300 is set such that the target opening area is large when the pump delivery pressure is low, and small when the pump delivery pressure is high. An input portion 520a takes in a detection signal from a pump pressure sensor 700, a processing portion 520b reads the data from the data portion 520c and calculates a signal output to a solenoid proportional valve 590, and an output portion 520d converts the calculated signal into a command signal for the solenoid proportional valve 590 and outputs the command signal. Upon receiving the command signal from the controller 520, the solenoid proportional valve 590 produces a command pilot pressure for the control valve 300 corresponding to the input signal and controls the opening area of the variable throttle 300a.

摘要翻译： 控制器520具有数据部分520c，其中泵输送压力和控制阀300的可变节流阀300a的目标开口面积之间的关系被设定为当泵输送压力低时目标开口面积大， 并且当泵输送压力高时小。 输入部分520a从泵压力传感器700接收检测信号，处理部分520b从数据部分520c读取数据，并计算输出到电磁比例阀590的信号，输出部分520d将计算出的信号转换成 用于电磁比例阀590的命令信号并输出​​命令信号。 电磁比例阀590从控制器520接收到指令信号时，根据输入信号产生控制阀300的指令先导压力，并控制可变节流阀300a的开度面积。

公开(公告)号：US6101456A

公开(公告)日：2000-08-08

申请号：US817489

申请日：1997-04-15

申请人： Youichi Kowatari ,  Toichi Hirata ,  Hidefumi Takegahara ,  Tsukasa Toyooka ,  Kouji Ishikawa ,  Genroku Sugiyama ,  Shigehiro Yoshinaga

发明人： Youichi Kowatari ,  Toichi Hirata ,  Hidefumi Takegahara ,  Tsukasa Toyooka ,  Kouji Ishikawa ,  Genroku Sugiyama ,  Shigehiro Yoshinaga

IPC分类号： E02F9/20 ,  E02F9/22 ,  F04B49/00 ,  F04B49/06 ,  F15B11/00 ,  F15B11/02 ,  G05B11/36 ,  G05B13/02 ,  G05B13/00

CPC分类号： G05B13/0265 ,  E02F9/2025 ,  E02F9/2235 ,  F04B49/065

摘要： A control system wherein a reverse characteristic having a reverse input/output relationship to a target input/output characteristic of a control object, is preset, and a target value for an output of the control object is calculated. A command signal corresponding to the target value then is determined based on the preset reverse characteristic, and the command signal is output to the control object. The control system includes first means for calculating a command signal corresponding to a given target value for the output of the control object based on the preset reverse characteristic, outputting the command signal to the control object, measuring an output of the control object and estimating a deviation between an actual input/output characteristic of the control object and the target input/output characteristic therefor, and storing data on the deviation between the input/output characteristics as learning correction data. The control system further includes second means for reading out the stored learning correction data and correcting the command signal using the learning correction data.

摘要翻译： PCT No.PCT / JP96 / 02517 Sec。 371日期1997年04月15日 102（e）日期1997年04月15日PCT 1996年9月5日提交的一种控制系统，其中具有与控制对象的目标输入/输出特性相反的输入/输出关系的反向特性被预先设定， 计算控制对象的输出。 基于预设的反向特性来确定与目标值相对应的命令信号，并且将命令信号输出到控制对象。 控制系统包括：第一装置，用于基于预设的反向特性来计算对应于控制对象的输出的给定目标值的命令信号，向控制对象输出命令信号，测量控制对象的输出并估计一个 控制对象的实际输入/输出特性与其目标输入/输出特性之间的偏差，并且存储关于输入/输出特性之间的偏差的数据作为学习校正数据。 控制系统还包括用于读出所存储的学习校正数据并使用学习校正数据校正命令信号的第二装置。

公开(公告)号：US5890303A

公开(公告)日：1999-04-06

申请号：US774703

申请日：1996-12-26

申请人： Kouji Ishikawa ,  Toichi Hirata ,  Genroku Sugiyama ,  Tsukasa Toyooka ,  Youichi Kowatari

发明人： Kouji Ishikawa ,  Toichi Hirata ,  Genroku Sugiyama ,  Tsukasa Toyooka ,  Youichi Kowatari

IPC分类号： E02F9/22 ,  F15B11/16 ,  E02F5/02

CPC分类号： E02F9/2282 ,  E02F9/2242 ,  E02F9/2292

摘要： A pilot pressure sensor detects a pilot pressure from an arm operating unit and outputs a pilot pressure signal. A drive signal corresponding to the pilot pressure signal is then outputted from a controller to a solenoid-operated proportional valve. Through the solenoid-operated proportional valve, a pilot pressure is fed to an auxiliary selector valve so that an opening of said auxiliary selector valve becomes greater. Of pressure oil delivered from a first hydraulic pump, a flow rate of the pressure oil to be branched to a side of a by-pass circuit is hence increased. The pressure oil fed through the by-pass circuit passes through a merging directional control valve and is caused to merge with pressure oil fed from a second hydraulic pump. The thus-merged pressure oil is then fed to a hydraulic arm cylinder.

摘要翻译： 先导压力传感器检测来自臂操作单元的先导压力并输出先导压力信号。 然后将与先导压力信号对应的驱动信号从控制器输出到电磁比例阀。 通过电磁比例阀，先导压力被供给辅助选择阀，使得所述辅助选择阀的开度变大。 从第一液压泵输送的压力油中，因此分支到旁通回路侧的压力油的流量增加。 通过旁通回路供给的压力油通过合流方向控制阀，并与从第二液压泵供给的压力油合并。 然后将这样合并的压力油送入液压臂缸。

公开(公告)号：US5848531A

公开(公告)日：1998-12-15

申请号：US774725

申请日：1997-01-03

申请人： Tsuyoshi Nakamura ,  Toichi Hirata ,  Genroku Sugiyama ,  Tsukasa Toyooka ,  Youichi Kowatari ,  Kouji Ishikawa

发明人： Tsuyoshi Nakamura ,  Toichi Hirata ,  Genroku Sugiyama ,  Tsukasa Toyooka ,  Youichi Kowatari ,  Kouji Ishikawa

IPC分类号： E02F9/22 ,  F15B11/028 ,  F16D31/02

CPC分类号： E02F9/2282 ,  E02F9/2228 ,  E02F9/2235 ,  E02F9/2296

摘要： A hydraulic system for a construction machine includes a hydraulic pump driven by a prime mover, actuators driven by a hydraulic fluid delivered from the hydraulic pump, flow control valves for controlling flow of the hydraulic fluid to the actuators and operation means for operating the flow control valves. A relief value sets a relief pressure for limiting the maximum delivery pressure of the hydraulic pump and relief pressure change means increase or decrease the relief pressure set by the relief valve. The relief pressure change means automatically increase or decrease the relief pressure in accordance with the input amount of the operation means.

摘要翻译： 用于建筑机械的液压系统包括由原动机驱动的液压泵，由从液压泵输送的液压流体驱动的致动器，用于控制液压流体到致动器的流量控制阀和用于操作流量控制的操作装置 阀门 释放值设定用于限制液压泵的最大输送压力的溢流压力，溢流压力改变装置增加或减少由安全阀设定的溢流压力。 溢流压力改变装置根据操作装置的输入量自动增加或减小溢流压力。

公开(公告)号：US5575148A

公开(公告)日：1996-11-19

申请号：US454270

申请日：1995-06-07

申请人： Toichi Hirata ,  Genroku Sugiyama ,  Hiroshi Watanabe ,  Shigehiro Yoshinaga

发明人： Toichi Hirata ,  Genroku Sugiyama ,  Hiroshi Watanabe ,  Shigehiro Yoshinaga

IPC分类号： E02F9/22 ,  F16D31/02

CPC分类号： E02F9/2235 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2296

摘要： A controller 24 includes function generators 151, 152. The function generator 151 is set to have such a characteristic that as the detected value P.sub.N of a negative control pressure from a pressure sensor 21 is reduced, a first target tilting amount .theta..sub.N increases from a minimum value to a maximum value, and the function generator 152 is set to have such a characteristic that as the detected value P.sub.B of a control input (pilot pressure) for driving a boom cylinder 6 is increased, a second target tilting amount .theta..sub.B increases from a predetermined minimum value to the same maximum value as the above maximum value. Minimum one of the two target tilting amounts from both the function generators is selected, and a proportional solenoid valve 25 is driven based on the selected minimum tilting amount. This makes it possible to surely suppress an unwanted speed increase of a specific hydraulic actuator other than a boom cylinder, such as a swing motor 9, that would be caused when the tilting amount is controlled based on only the negative control pressure.

摘要翻译： PCT No.PCT / JP94 / 02008 Sec。 371日期：1995年6月7日 102（e）日期1995年6月7日PCT 1994年11月30日PCT PCT。 WO95 / 15441 PCT出版物 日期：1995年6月8日控制器24包括功能发生器151,152。功能发生器151被设定为具有这样的特性：当来自压力传感器21的负控制压力的检测值PN减小时，第一目标倾斜量 θN从最小值增加到最大值，并且函数发生器152被设置为具有如下特征：当用于驱动动臂缸6的控制输入（先导压力）的检测值PB增加时，第二目标 倾斜量θB从预定的最小值增加到与上述最大值相同的最大值。 选择来自功能发生器的两个目标倾斜量中的最小一个，并且基于所选择的最小倾斜量来驱动比例电磁阀25。 由此，能够可靠地抑制在仅基于负的控制压力来控制倾斜量时将产生的例如回转马达9以外的特定液压致动器的不希望的速度增加。

公开(公告)号：US5930996A

公开(公告)日：1999-08-03

申请号：US164365

申请日：1998-10-01

申请人： Kazunori Nakamura ,  Ei Takahashi ,  Tsukasa Toyooka ,  Kouji Ishikawa ,  Tsuyoshi Nakamura ,  Yoichi Kowatari ,  Tadatoshi Shimamura ,  Genroku Sugiyama ,  Toichi Hirata

发明人： Kazunori Nakamura ,  Ei Takahashi ,  Tsukasa Toyooka ,  Kouji Ishikawa ,  Tsuyoshi Nakamura ,  Yoichi Kowatari ,  Tadatoshi Shimamura ,  Genroku Sugiyama ,  Toichi Hirata

IPC分类号： B60K25/02 ,  E02F9/22 ,  F02D29/04 ,  F04B49/00 ,  F16D31/02

CPC分类号： E02F9/2296 ,  E02F9/2235 ,  E02F9/2246 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292

摘要： In the arm-crowding or track operation, a calculating portion (700d2 or 700d4) calculates a modification gain (KAC or KTR) depending on an operation pilot pressure and a calculating portion (700g) calculates a decrease modification (DND) based on the KAC or KTR, while a calculating portion (700m or 700p) calculates a modification gain (KACH or KTRH) depending on an operation pilot pressure and calculating portions (700q-700s) calculate an increase modification (DNH) based on the KACH or KTRH. A reference target engine revolution speed NR0 is modified using the DND and DNH. In other operations than the arm-crowding and track operations, NR0 is modified using only the decrease modification (DND) calculated from the modification gain just depending on the operation pilot pressure. In the operation where an engine revolution speed is desired to become higher as an actuator load increases, the engine revolution speed can be controlled in accordance with change of the actuator load as well. In other operations, the engine revolution speed can be controlled just depending on the direction and input amount in and by which corresponding operation instructing apparatus is operated.

摘要翻译： 在手臂拥挤或轨道操作中，计算部分（700d2或700d4）根据操作先导压力计算修正增益（KAC或KTR），并且计算部分（700g）基于KAC计算减小修改（DND） 或KTR，而计算部分（700m或700p）根据操作先导压力计算修正增益（KACH或KTRH），并且计算部分（700q-700s）基于KACH或KTRH计算增加修改（DNH）。 使用DND和DNH修改参考目标发动机转速NR0。 在除了拥挤和跟踪操作之外的其他操作中，NR0仅使用根据操作先导压力从修改增益计算的减少修改（DND）进行修改。 在致动器负载增加时希望发动机转速变高的操作中，也可以根据致动器负载的变化来控制发动机转速。 在其他操作中，可以根据相应的操作指示装置的操作方向和输入量来控制发动机转速。

公开(公告)号：US06220028B1

公开(公告)日：2001-04-24

申请号：US09204068

申请日：1998-12-03

申请人： Kouji Ishikawa ,  Toichi Hirata ,  Genroku Sugiyama ,  Tsukasa Toyooka ,  Tsuyoshi Nakamura ,  Yasuharu Gotou

发明人： Kouji Ishikawa ,  Toichi Hirata ,  Genroku Sugiyama ,  Tsukasa Toyooka ,  Tsuyoshi Nakamura ,  Yasuharu Gotou

IPC分类号： F16D3102

CPC分类号： E02F9/2296 ,  B60W2710/0644 ,  E02F9/2235 ,  E02F9/2246 ,  E02F9/26

摘要： A hydraulic drive system is provided with a signal guide system for guiding a delivery pressure of a pump as a command pressure via a line and a port, another signal guide system for guiding a pilot pressure of a pilot pump as another command pressure via a line and a port, a tilting control unit for controlling the displacement of the pump by the command pressures guided to the ports, a controller having a command current-setting unit for setting a relationship between a target engine speed and a command current, a target engine speed-indicating unit for an engine, and a solenoid-operated proportional valve for allowing the pilot pressure of the line to pass as is while no drive signal is outputted from the controller but for being reduced in opening to change the pilot pressure to a smaller value when a drive signal is outputted from the controller.

摘要翻译： 液压驱动系统设置有信号引导系统，用于经由管线和端口引导泵的输送压力作为指令压力，另一个信号引导系统用于通过管线引导先导泵的先导压力作为另一个指令压力 以及端口，倾斜控制单元，用于通过被引导到端口的指令压力来控制泵的排量;控制器，具有用于设定目标发动机转速和指令电流之间的关系的指令电流设定单元，目标发动机 用于发动机的速度指示单元和用于允许线路的先导压力在没有驱动信号从控制器输出但为了减小开启以将先导压力改变为更小的电磁比例阀 当从控制器输出驱动信号时的值。

公开(公告)号：US5907951A

公开(公告)日：1999-06-01

申请号：US35334

申请日：1998-03-05

申请人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Kouji Ishikawa ,  Tsuyoshi Nakamura

发明人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Kouji Ishikawa ,  Tsuyoshi Nakamura

IPC分类号： F04B49/00 ,  E02F9/22 ,  F04B1/26 ,  F16D31/02

CPC分类号： E02F9/2296 ,  E02F9/2232 ,  E02F9/2285

摘要： A hydraulic control system according to the present invention for a construction machine is provided with a directional control valve switchable by a pilot control valve, a hydraulic cylinder, a pilot pump, a selector valve for selecting one of a maximum value out of pilot pressures of the pilot control valve, a flow control unit for controlling the flow rate of a variable displacement hydraulic pump, a pressure-reducing valve for converting a delivery pressure of the pilot pump to a pump control signal, which controls driving of the flow control unit, in accordance with a pilot pressure guided to a first signal line connected to the selector valve, a branch line connecting the pilot pump and the pressure-reducing valve with each other, and a second signal line for guiding the pump control signal, which has been converted at the pressure-reducing valve, to the flow control unit.

摘要翻译： 根据本发明的用于建筑机械的液压控制系统设置有可由先导控制阀，液压缸，先导泵，先导泵，选择阀切换的方向控制阀，用于从先导控制阀 先导控制阀，用于控制可变排量液压泵的流量的流量控制单元，用于将先导泵的输送压力转换为泵控制信号的减压阀，其控制流量控制单元的驱动， 根据引导到连接到选择阀的第一信号线的先导压力，连接先导泵和减压阀的分支管线和用于引导泵控制信号的第二信号线 在减压阀处转换到流量控制单元。

公开(公告)号：US06619037B1

公开(公告)日：2003-09-16

申请号：US09889612

申请日：2001-07-19

申请人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Kouji Ishikawa ,  Masao Nishimura ,  Tsuyoshi Nakamura

发明人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Kouji Ishikawa ,  Masao Nishimura ,  Tsuyoshi Nakamura

IPC分类号： F16D3102

CPC分类号： E02F9/2267 ,  E02F9/2239 ,  E02F9/2242 ,  E02F9/2271 ,  E02F9/2292

摘要： Provided are hydraulic pumps 1,2, a control valve group 15a connected to the pump 1 and including a bypass on/off valve 7, a control valve group 15b connected to the pump 2 and including a reserve-actuator-controlling, directional control valve 11, a communication line 13 communicating a most upstream side of the control valve group 15a with a supply line 11a to the reserve-actuator-controlling, directional control valve 11, a merge control valve 14 for communicating or cutting off the communication line 13, an interlocked control means for changing over the merge control valve 14 to an open position and the bypass on/off valve 7 to a closed position in association with a change-over operation of the reserve-actuator-controlling, directional control valve 11, and a selective control valve 28 capable of taking one of a state, in which the operation to change over the merge control valve 14 by the interlocked control means is feasible, and another state in which the operation to change over the merge control valve by the interlocked control means is infeasible. The control valve group 15a, the control valve group 15b, the communication line 13 and the merge control valve 14 are arranged in a housing 15 such that a change or the like in a maximum value of an operating speed of an actuator, said operating speed being controlled by the reserve directional control valve, can be achieved.

摘要翻译： 设有液压泵1,2，与泵1连接并包括旁通开闭阀7的控制阀组15a，连接到泵2的控制阀组15b，并且包括备用执行器控制方向控制阀 如图11所示，将控制阀组15a的最上游侧与供给管线11a连通的通信线路13配置到备用执行器控制用方向控制阀11，连通或切断通信线路13的合流控制阀14， 联合控制装置，用于将合并控制阀14转换到打开位置，旁路开/关阀7与备用执行器控制方向控制阀11的转换操作相关联地转换到关闭位置，以及 选择控制阀28，其能够采用其中一个状态，其中通过互锁控制装置切换合并控制阀14的操作是可行的;以及另一种状态，其中改变o的操作 通过互锁控制装置检查合并控制阀是不可行的。 控制阀组15a，控制阀组15b，连通管线13和合并控制阀14布置在壳体15中，使得在致动器的操作速度的最大值中的变化等，所述操作速度 由备用方向控制阀控制，可以实现。