Control Signal Generation Device for Electrical Systems
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Solution Overview
Problem
In electrical systems, the introduction of latency in feedback loops due to digital control systems can deteriorate the passivity property, leading to instability and destabilization.
Innovation Solution
A device comprising an analog block with a passive analog component and a digital block with a digitally controllable component, connected by analog-digital and digital-analog converters, which encapsulates the latency within a virtual passive electrical transmission line, ensuring passivity by integrating the intrinsic delay in a passive form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If real-time digital control is implemented using embedded systems, then control precision and automation are improved, but latency is introduced which deteriorates passivity and causes destabilization
Solution Approach 1:
The patent introduces a passive analog component as an intermediary element between the digital controller and the electrical system. This passive component acts as a mediator that processes the control signal in the analog domain, thereby eliminating the destabilizing effect of digital latency while preserving the benefits of digital control automation. The passive analog component serves as a bridge that translates digital control commands into stable analog control actions.
2Measurement precision
If digital control calculations are performed, then control accuracy is improved, but processing delay increases which leads to loss of time and system destabilization
Solution Approach 1:
The control system is segmented into two distinct functional parts: a digital control unit that performs accurate calculations and generates control commands, and a passive analog component that executes these commands in real-time without additional processing delay. This segmentation allows the system to benefit from both digital precision and analog speed, effectively separating the computational function from the execution function to eliminate latency.
3Adaptability or versatility
If feedback loop includes digital processing, then control functionality is improved, but the feedback delay causes harmful effects by deteriorating passivity
Solution Approach 1:
The passive analog component serves as an intermediary in the feedback loop that processes signals without introducing additional latency. By placing this passive element within the feedback path, the system maintains full digital control functionality while ensuring that the feedback signal returns to the controller without destabilizing delays, thus preserving passivity throughout the complete control cycle.
Data Source
AI summary
The present invention relates to a device (40) for generating a control signal for an electrical system (S), comprising:an analog block (46) connected to the input (42) and to the output (44) of the generation device (40), the analog block (46) comprising an electrical circuit comprising a passive analog component, a measuring component and a generator,a digital block (50) comprising at least one digitally controllable component (70),the passive analog component of the electrical circuit being configured so as to generate the first component of the control signal and the generator of the electrical circuit being configured so as to generate the second component of the control signal, the electrical circuit being configured so as to sum the first and the second component that are generated in order to obtain the control signal.