Shared Drive Scheduling for Multi-Machine Energy Matching
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Solution Overview
Problem
In multi-machine production lines, the mismatch between energy supply and demand across different processing stages leads to significant energy loss due to varying energy requirements, resulting in low energy efficiency, typically less than 40%, and makes it difficult to reduce energy consumption by altering the processing flow.
Innovation Solution
An energy service system with a drive system, execution devices, and an energy supply bus, where the drive system is composed of multiple units that supply energy efficiently by matching power requirements through a control center, and a shared drive system design that sequences tasks based on power similarity and load curves to optimize energy usage across multiple machines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hydraulic transmission is used with a drive system designed according to power requirement of a process, then large power-to-weight ratio and simple control are achieved, but the installed power of the drive system is relatively large and the matching degree between drive system and load is relatively low
Solution Approach 1:
The patent applies dynamics by making the drive system adjustable and adaptable to varying load requirements. The drive system can dynamically adjust its output to match the actual power needs of different processing stages, transitioning from a static fixed-power system to a dynamic variable-power system. This resolves the contradiction by maintaining simple hydraulic control while reducing energy loss through adaptive power matching.
Solution Approach 2:
The patent changes the power parameter of the drive system from a fixed value to a variable value that can be adjusted according to actual load requirements. By enabling the drive system to modify its output power dynamically across different processing stages, the system achieves better load matching and reduces energy loss while maintaining the simplicity of hydraulic control.
2Power
If drive system installed power is increased to meet peak power requirements, then power availability is improved, but the matching degree between drive system and load requirement decreases
Solution Approach 1:
The patent implements a dynamic drive system that can adjust its power output in real-time to match varying load requirements across different processing stages. Instead of operating at fixed peak capacity, the system dynamically scales power delivery according to actual needs, ensuring power availability when required while minimizing energy loss during lower-demand phases.
Solution Approach 2:
The patent applies periodic action by varying the drive system's power output in accordance with the periodic nature of processing stage requirements. The drive system cycles through different power levels corresponding to different processing stages, providing high power during peak demand periods and reducing power during auxiliary stages, thereby maintaining power availability while reducing overall energy loss.
3Power
If energy supply is increased to meet peak demand of processing stages, then power requirement fulfillment is improved, but energy efficiency decreases
Solution Approach 1:
The patent makes the energy supply system dynamic and adaptive, enabling it to adjust energy delivery according to the actual power requirements of different processing stages. The system transitions from a static high-capacity supply that operates at low efficiency to a dynamic supply that optimizes energy delivery, fulfilling peak power demands while maintaining high energy efficiency through real-time adaptation.
Solution Approach 2:
The patent changes the energy supply parameter from a fixed high-capacity mode to a variable mode that can be adjusted according to actual processing stage requirements. By modifying the energy supply parameter dynamically, the system ensures adequate power fulfillment during peak demand while optimizing energy efficiency across all operating conditions.
4Reliability
If each execution device has dedicated drive system, then reliability is improved, but device complexity and energy loss increase
Solution Approach 1:
The patent applies universality by designing a shared drive system that can serve multiple execution devices and processing stages. This single multi-functional drive system replaces multiple dedicated drive systems, reducing overall system complexity and energy loss while maintaining reliability through centralized control and coordinated operation across different processing stages.
Solution Approach 2:
The patent merges multiple dedicated drive systems into a single shared drive system that serves multiple execution devices. By combining the drive functions and sharing the power delivery infrastructure, the system reduces complexity and energy loss while maintaining reliability through unified control and coordinated operation across different processing stages.
Data Source
AI summary
Disclosed are an energy service system of a multi-machine production line and a control method thereof, the method includes reorganizing respective machines in the production line into three types of controllable entities: a drive system, an energy supply bus and an execution device, equipping them with a control center, and selecting a sub-drive system that is idle and is capable of completing the work stage with high energy efficiency to supply energy service for the corresponding execution device through the energy supply bus. Further disclosed is a design method of a multi-machine shared drive system of a production line, which increases the number of basic flow units of each drive unit to a maximum value one by one, and coordinates action time to form a variety of scheduling schemes, and selects a configuration scheme whose total time and total energy consumption are less as the shared drive system.