Kawasaki Jukogyo Kabushiki Kaisha

Tomoya Sakuma

Jun Fujimori

Kazumi Fukuhara

Toshihisa Toyota

Hitoshi Nariai

Shuhei Ohtsuka

Hiroyuki Moriishi

Koichi Masaoka

Keita Morikawa

Yuji Hashiba

Shota Asazu

A method of planning works for robots includes creating a work plan for a plurality of robots, each having a work tool, sharing at at least one station a work to a plurality of work parts of the workpiece. The method includes the steps of calculating a distribution of the work parts to the robots, calculating, as a robot operation, a work order of the work parts and a moving path of the work tool for each of the robots based on the calculated work distribution, and calculating a disposed location of each of the robots with respect to the workpiece and a station where the robot is disposed so that an inter-robot interference does not occur during execution of the calculated robot operation.

Method of planning works for robots and work planning device

The rotational frequency of a variable speed motor is set to a normal rotational frequency setting value (N). A pressure variation range (&#x394;P) is detected based on a pressure detection value P, of a variable displacement pump, detected by a pressure detector. It is determined whether a determination that the detected pressure variation range (&#x394;P) is less than or equal to a pressure maintained state detection level (L) has been continuously given for a period indicated by a timer setting value (T). If the determination that the detected pressure variation range (&#x394;P) is less than or equal to the pressure maintained state detection level (L) has been continuously given for the predetermined period, then it is detected that the current state is a pressure maintained state, and the rotational frequency of the variable speed motor is switched from the normal rotational frequency setting value Nto a pressure maintaining rotational frequency setting value (N(&#x3c;N)).

Hydraulic pump operating device and method for use in hydraulic system

Growing community of inventors

Kobe, Japan

Tomoya Sakuma