ENERGY-SAVING CONTROL SYSTEM FOR PRODUCTION APPARATUS AND ENERGY-SAVING CONTROL METHOD THEREOF

BACKGROUND

Technical Field

[0001]The present invention relates to a control system that may recognize a processing section interval and a non-processing wastage section interval, and particularly relates to an energy-saving control system for a production apparatus and an energy-saving control method thereof.

Description of Related Art

[0002]Conventional production apparatus (such as forging equipment) is characterized by high energy consumption. In particular, during the idle mode of the non-processing wastage section interval of the forging equipment, the motor still generates unnecessary current output, thereby resulting in unnecessary energy consumption by the production apparatus.

SUMMARY

[0003]The present invention provides an energy-saving control system for a production apparatus and a recognition and energy-saving control method thereof, which may effectively save energy consumption of the production apparatus.

[0004]The energy-saving control system for a production apparatus of the present invention includes a current hook meter and a control circuit. The current hook meter is coupled to the production apparatus. The control circuit is coupled to the current hook meter. The control circuit executes a current signal acquisition module to obtain a current signal of the production apparatus through the current hook meter, and the current signal acquisition module converts the current signal into a current value variation curve. The control circuit analyzes the current value variation curve through an analysis model to identify the processing section interval and the non-processing wastage section interval in the current value variation curve, and the control circuit may adjust the motor speed of the production apparatus according to the identified non-processing wastage section interval in the current value variation curve to enhance the energy-saving effect.

[0005]The energy-saving control method of the present invention includes the following steps: executing a current signal acquisition module to obtain a current signal of the production apparatus through a current hook meter; converting the current signal into a current value variation curve through the current signal acquisition module; analyzing the current value variation curve through an analysis model to identify the processing section interval and the non-processing wastage section interval in the current value variation curve; and adjusting the motor speed of the production apparatus according to the non-processing wastage section interval of the current value variation curve to enhance the energy-saving effect.

[0006]Based on the above, the energy-saving control system for the production apparatus and the energy-saving control method thereof in the present invention may automatically judge the current value change of the production apparatus to reduce the power consumption of the production apparatus during idle operation periods.

[0007]To make the above features and advantages of the present invention more apparent and understandable, examples are given below and detailed explanations are provided with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0008]FIG. 1 is a schematic view of an energy-saving control system according to an embodiment of the present invention.

[0009]FIG. 2 is a schematic view of multiple modules according to an embodiment of the present invention.

[0010]FIG. 3 is a flowchart of an energy-saving control method according to an embodiment of the present invention.

[0011]FIG. 4 is a schematic view of a current value variation curve according to an embodiment of the present invention.

DESCRIPTION OF THE EMBODIMENTS

[0012]Now, reference will be made in detail to exemplary examples of the present invention, examples of which are illustrated in the accompanying drawings. Where possible, the same reference numbers are used in the drawings and the following description to refer to the same or similar parts.

[0013]FIG. 1 is a schematic view of an energy-saving control system according to an embodiment of the present invention. Referring to FIG. 1, the energy-saving control system 100 includes a control circuit 110 and a current hook meter 120. In an embodiment, the control circuit 110 may include a processor and a memory. In this embodiment, the current hook meter 120 is coupled to a production apparatus 200. The control circuit 110 is coupled to the current hook meter 120. In this embodiment, the production apparatus 200 may be a type of forging equipment, but the present invention is not limited to this. In an embodiment, the production apparatus 200 may also be a type of casting equipment or other energy-consuming equipment. In this embodiment, the current hook meter 120 may be disposed at the current input terminal of the production apparatus 200 or other positions where current can be detected, so as to detect the current signal of the production apparatus 200. In an embodiment, the energy-saving control system 100 may further include circuit components such as a three-phase electricity meter, a power concentrator and/or a current transformer.

[0014]FIG. 2 is a schematic view of multiple modules according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 2, the energy-saving control system 100 may further include a storage unit, which stores programs or algorithms of a current signal acquisition module 210, an activation signal acquisition module 220, a forging signal interface module 230, and an analysis model 240 as shown in FIG. 2 for execution by the control circuit 110. In an embodiment, the current signal acquisition module 210, the activation signal acquisition module 220, the forging signal interface module 230, and the analysis model 240 may also be implemented in combination with other functional circuits or hardware devices. In this example, the current signal acquisition module 210 may be used to obtain the current signal of the production apparatus 200. The activation signal acquisition module 220 may be used to obtain the activation signal of the production apparatus 200. The forging signal interface module 230 may be used to convert the current signal into specific value data and generate corresponding current value variation curve. The forging signal interface module 230 may display the current value variation curve and input the current value variation curve to the analysis model 240, so that the analysis model 240 is able to identify multiple curve intervals of the current value variation curve. The control circuit 110 may adjust the motor speed or motor drive voltage of the production apparatus 200 according to the identification results of the analysis model 240, so as to achieve an effective energy-saving effect.

[0015]FIG. 3 is a flowchart of an energy-saving control method according to an embodiment of the present invention. Referring to FIG. 1 to FIG. 3, in step S310, the control circuit 110 may execute the current signal acquisition module 210 to obtain the current signal of the production apparatus 200 through the current hook meter 120. In step S320, the current signal acquisition module 210 may convert the current signal into a current value variation curve. In this embodiment, the current hook meter 120 may obtain the alternating current signal of the production apparatus 200, and the current signal acquisition module 210 may perform root mean square (RMS) calculation on the values of the alternating current signal of the production apparatus 200 to obtain multiple root mean square values of the current value variation curve.

[0016]In step S330, the control circuit 110 may analyze the current value variation curve through the analysis model 240 to identify the processing section interval and the non-processing wastage section interval in the current value variation curve. In this embodiment, the analysis model 240 may be a neural network model. In an embodiment, the analysis model 240 may be a long short-term memory (LSTM) neural network model, but the present invention is not limited to this. In an embodiment, the analysis model 240 may also adopt other similar models. In this embodiment, the production apparatus 200 may operate in a processing status and a non-processing idle consumption status. The processing status may refer to the production apparatus 200 operating in a forming mode or a recovery mode. The non-processing idle consumption status may refer to the production apparatus 200 operating in a standby mode. The control circuit 110 may determine the above statuses according to the activation signal of the production apparatus 200, and identify the above modes through the analysis model 240.

[0017]In step S340, the control circuit 110 may adjust the motor speed of the production apparatus 200 according to the non-processing wastage section interval of the current value variation curve. In an embodiment, the control circuit 110 may also adjust the motor drive voltage of the production apparatus 200. In this embodiment, the control circuit determines an operation mode of the production apparatus according to the activation signal, and adjusts the motor speed of the production apparatus 200 according to the non-processing wastage section interval of the current value variation curve and the operation mode. As a result, after the control circuit 110 adjusts the motor speed, the standby current of the production apparatus 200 may be reduced synchronously. In other words, the energy-saving control system 100 may automatically reduce the current and power of the production apparatus 200 during the standby process to achieve the energy-saving effect.

[0018]FIG. 4 is a schematic view of a current value variation curve of an embodiment of the present invention. Referring to FIG. 1, FIG. 2 and FIG. 4, in this embodiment, the forging signal interface module 230 may display the current value variation curve 401 as shown in FIG. 4 through a display device, and the forging signal interface module 230 may input the values of the current value variation curve 401 to the analysis model 240, so as to determine through the analysis model 240, for example, that the time interval from time t0 to time t1 of the current value variation curve 401 is a time interval of the standby mode, and for example, determine that the time interval from time t1 to time t2 is a time interval of the forming mode and the recovery mode (for example, the recovery process of the forging mechanism). In an embodiment, taking the forging equipment as an example, the current value variation curve 401 may also be considered as a forging stroke curve.

[0019]In this embodiment, the control circuit 110 may identify the segment from time t0 to time t1 of the current value variation curve 401 as a non-processing wastage section interval, and may identify the segment from time t1 to time t2 of the current value variation curve 401 as a processing section interval. The control circuit 110 may adjust the motor speed of the production apparatus 200, for example, to reduce the motor speed or motor drive voltage of the production apparatus 200 during the time interval of the standby mode, so that the standby current of the production apparatus 200 may be reduced synchronously. Therefore, at the next operation time point, the current signal of the adjusted production apparatus 200 has the current value variation curve 402 as shown in FIG. 4. As a result, when the control circuit 110 makes judgment according to the current signal and the activation signal of the production apparatus 200 that the production apparatus 200 is operating in the standby mode, the standby current of the production apparatus 200 may be effectively reduced in the non-processing wastage section interval in the standby mode.

[0020]In addition, in an embodiment, the control circuit 110 may also train the analysis model 240 (i.e., the neural network model) according to the current value variation curve 401 and the current value variation curve 402 (forging stroke curve), so as to effectively improve the judgment accuracy of the analysis model 240. Alternatively, the analysis model 240 may also use forging stroke curves under other operating modes.

[0021]In summary, the energy-saving control system for the production apparatus and the energy-saving control method thereof in the present invention may obtain the input current signal of the production apparatus through a current hook meter, and determine the non-processing wastage section interval in the operation process of the production apparatus through a neural network model. The energy-saving control system and the energy-saving control method thereof in the present invention may automatically reduce the input current of the production apparatus in the non-processing wastage section interval during the operation process. Therefore, the energy-saving control system for the production apparatus and the energy-saving control method thereof in the present invention may effectively reduce the energy consumption of the production apparatus during idle operation periods.

[0022]It will be apparent to those skilled in the art that various modifications and variations may be made to the disclosed examples without departing from the scope or spirit of the present disclosure. In view of the foregoing, it is intended that the present disclosure cover modifications and variations provided they fall within the scope of the appended claims and their equivalents.