Section-Based Control Switching for Abnormality Recovery
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Solution Overview
Problem
Existing control systems struggle to minimize the difference between the state of a control subject after an abnormality occurs and its normal state, often leading to significant disruptions and increased workload for staff.
Innovation Solution
A control system that switches between normal and non-normal condition control based on the state of individual sections of the control subject, using a switching unit to assign normal, abnormal, and recovery control units to maintain operation and facilitate quick recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If normal control is maintained after abnormality occurs, then operational continuity is preserved, but system safety and reliability deteriorate
Solution Approach 1:
The control system is divided into multiple independent control units, each responsible for specific sections of the control subject. When an abnormality occurs in one section, only the affected control unit switches to non-normal control, while other control units continue normal operation. This segmentation allows the system to maintain overall operational continuity while isolating and addressing the specific reliability issue in the affected section.
2Reliability
If non-normal condition control is switched for all sections, then system safety is improved, but operational efficiency and productivity deteriorate
Solution Approach 1:
The control system applies different control qualities to different sections based on their actual state. Normal condition control is applied to sections operating without issues, while non-normal condition control is applied only to sections experiencing abnormalities. This local differentiation ensures that safety measures are concentrated where needed, while operational efficiency is maintained in unaffected sections.
3Reliability
If control switching is implemented for all sections, then reliability is improved, but device complexity and staff workload increase
Solution Approach 1:
The control units are pre-configured with both normal condition control programs and non-normal condition control programs. When an abnormality is detected, the system simply switches between pre-prepared control modes rather than generating new control strategies in real-time. This preliminary preparation reduces the computational complexity and staff intervention needed during actual abnormal events.
Data Source
AI summary
A control system includes: a switching unit that switches, for sections of a control subject, between normal condition control and non-normal condition control of the sections, based on a state of at least one section among the sections of the control subject; and a control unit that performs control of the sections of the control subject according to a switching of control by the switching unit.