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1. 发明申请

US20140371915A1 DEVICE FOR CONTROLLING CONSTRUCTION MACHINERY 有权
标题翻译：用于控制建筑机械的装置
公开(公告)号：US20140371915A1
公开(公告)日：2014-12-18
申请号：US14370127
申请日：2012-12-28
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： Shinji Ishihara , Masatoshi Hoshino , Mitsuo Sonoda
IPC分类号： G05B11/01 , G05B15/02
CPC分类号： G05B11/01 , B60K6/485 , B60W10/06 , B60W10/30 , B60W20/00 , B60W30/1882 , F02D29/04 , F02D29/06 , F04B49/06 , G05B15/02 , Y02T10/6226
摘要： In a control device for construction machinery, a system operating point calculation unit calculates a plurality of combinations of engine rotational speed and engine torque with which demanded power of an engine can be generated; and calculates system efficiency in each of the combinations according to discharge pressure of a hydraulic. A rotational speed calculation unit calculates target rotational speed of the engine as the engine rotational speed in one of the combinations of the engine rotational speed, the engine torque and the system efficiency calculated by the system operating point calculation unit that includes desired system efficiency. A displacement calculation unit calculates target displacement of the hydraulic pump based on the target rotational speed calculated by the rotational speed calculation unit and demanded flow rate of the hydraulic pump. With this control device, the engine and the hydraulic pump can be controlled at an efficient operating point.
摘要翻译：在工程机械的控制装置中，系统工作点运算部使用能够产生发动机的发动机功率的发动机转速和发动机转矩的组合，并根据液压的排放压力计算每个组合中的系统效率。旋转速度计算单元以包括期望的系统效率的系统运行点计算单元计算的发动机转速，发动机转矩和系统效率的组合之一来计算发动机的目标转速作为发动机转速。位移计算单元基于由转速计算单元计算的目标转速和液压泵的要求流量来计算液压泵的目标排量。利用该控制装置，可以将发动机和液压泵控制在有效的工作点。

2. 发明授权

US09671763B2 Device for controlling construction machinery 有权
公开(公告)号：US09671763B2
公开(公告)日：2017-06-06
申请号：US14370127
申请日：2012-12-28
申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.
发明人： Shinji Ishihara , Masatoshi Hoshino , Mitsuo Sonoda
IPC分类号： G05B11/01 , B60K6/485 , B60W10/06 , B60W20/00 , F04B49/06 , B60W10/30 , B60W30/188 , G05B15/02 , F02D29/04 , F02D29/06
CPC分类号： G05B11/01 , B60K6/485 , B60W10/06 , B60W10/30 , B60W20/00 , B60W30/1882 , F02D29/04 , F02D29/06 , F04B49/06 , G05B15/02 , Y02T10/6226
摘要： In a control device for construction machinery, a system operating point calculation unit calculates a plurality of combinations of engine rotational speed and engine torque with which demanded power of an engine can be generated; and calculates system efficiency in each of the combinations according to discharge pressure of a hydraulic. A rotational speed calculation unit calculates target rotational speed of the engine as the engine rotational speed in one of the combinations of the engine rotational speed, the engine torque and the system efficiency calculated by the system operating point calculation unit that includes desired system efficiency. A displacement calculation unit calculates target displacement of the hydraulic pump based on the target rotational speed calculated by the rotational speed calculation unit and demanded flow rate of the hydraulic pump. With this control device, the engine and the hydraulic pump can be controlled at an efficient operating point.

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