Control method of a hydraulic machine for saving energy or improving efficiency
AssigneesUnion Plastic (Hangzhou) Machinery Co., Ltd., Hsiaoting Lu
InventorsWeiting Lu, Hsiaoting Lu
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Abstract
An energy-saving or speed-increase control method for a hydraulic machine is disclosed in this invention, the characteristics of which includes a control plan to adjust pressure or flow amount of the machine for energy-saving or production efficiency increase; setting up working conditions as in input to said machine; inspection of working conditions and operational processes of the machine; updating demands in control plan based on the inspected working conditions and operational processes of a hydraulic machine; incorporating specific characteristics of individual elements in different working conditions and operational processes to coordinate with the control plan.
Claims7
An energy-saving or speed-increase control method for a hydraulic machine including a controller and a plurality of individual elements including one or more motor, oil pump, and frequency converter containing specific characteristics thereof, characterized by the following steps:
- I) said specific characteristics of said individual elements are pre-stored in said controller of said hydraulic machine, including restrictions on rotation speeds of said motor and said oil pump, maximum power of said motor in rotation, and output pressure of said frequency converter with a maximum current;
- II) a control plan to adjust pressure or flow amount of said hydraulic machine for energy-saving or production efficiency increase;
- III) inputting working conditions to said hydraulic machine;
- IV) inspection of said working conditions and operational processes of said hydraulic machine;
- V) updating demands in said control plan during operation of said hydraulic machine based on
- V.1) said working conditions inspected and
- V.2) said operational processes of said hydraulic machine, further restricted by
- V.3) said specific characteristics of said individual elements pre-stored in said controller.
Dependencies are inferred from the claim text.