Hydraulic source control device, injection molding apparatus, and method of controlling hydraulic source
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United States of America Patent
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May 23, 2017
Grant Date -
Jul 3, 2014
app pub date -
Dec 27, 2012
filing date -
Aug 10, 2012
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Abstract
The hydraulic source control device includes an operation input device capable of inputting operation conditions regarding the driving force of a fluid pressure control element, a servo motor including a motor section that drives a hydraulic pump and an amplifier that drives the motor section, and a controller that outputs a control command to the servo motor based on an input result to the operation input device. The controller obtains the fluid pressure of a working fluid based on the operation conditions regarding the input driving force, computes the output torque of the motor section based on the relationship between the fluid pressure and the output torque that are stored in advance, and outputs the computed output torque to the amplifier as a control command of the torque limitation value of the servo motor.
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