Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tetsuo Nakata0
Yasuto Yanagida0
Yoshiyuki Ochi0
Date of Patent
September 15, 2009
0Patent Application Number
105346900
Date Filed
November 17, 2003
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A pump driving apparatus has a characteristic changing section which receives a set pressure, a set flowing amount, a set horse power, and a DC voltage of the converter section as input, outputs modified values of pressure, flowing amount, and horse power, and supplies the modified values to the horse power command generation section. Therefore, the motor can be driven to suit the change in power voltage so that the motor capacity can be utilized sufficiently.
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