Electrical Component Resistance Tolerance Compensation
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Solution Overview
Problem
Existing methods for producing electrical components, such as resistance components, face challenges in achieving precise tolerances due to variations in substrate thickness during manufacturing, leading to deviations in the actual electrical variables from the desired values.
Innovation Solution
A method that involves measuring the actual parameters of the substrate and adjusting the component area to compensate for these variations, ensuring the target electrical value is achieved by calculating the necessary component area based on the measured resistance and thickness, and then separating the base plate into component areas with calculated dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the substrate thickness is controlled during manufacturing, then the manufacturing precision is improved, but the production complexity increases
Solution Approach 1:
The patent changes the parameter being controlled from substrate thickness to component area. Instead of attempting to precisely control the thickness parameter during manufacturing, the invention measures the actual thickness and compensates by adjusting the area parameter in the cutting process, thereby achieving precise resistance values without complex thickness control machinery
Solution Approach 2:
The invention performs preliminary measurement of the substrate thickness and resistance before cutting. By measuring the actual parameters of each substrate and calculating the required component area in advance, the system prepares compensation data before the actual component production, allowing standard manufacturing equipment to produce components within tolerance
2Manufacturing precision
If the component area is adjusted to compensate for substrate variations, then the electrical variable tolerance is improved, but the manufacturing process complexity increases
Solution Approach 1:
The invention implements a feedback loop where the actual substrate parameters (thickness, resistance) are measured, and this information is used to calculate and adjust the component area. The measured values feed into a calculation system that determines the precise cutting dimensions needed to achieve target resistance values, creating a closed-loop control system
Solution Approach 2:
The patent introduces an intermediary calculation system that translates measured substrate parameters into cutting instructions. This intermediary layer (the area calculation based on measured thickness and resistance) mediates between the variable substrate properties and the required electrical component specifications, simplifying the control approach
3Manufacturing precision
If individual substrate sections are measured before separation, then the electrical component precision is improved, but the production time increases
Solution Approach 1:
The invention measures only the critical parameters (thickness and resistance) needed for compensation rather than performing comprehensive inspections. By focusing measurement efforts on the specific parameters that affect electrical properties, the system achieves necessary precision without excessive measurement time
Data Source
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AI summary
Disclosed is a method for producing an electrical component having a predefined setpoint resistance. First, a base plate (1) is provided which comprises a substrate (100') and two large-area electrodes (211, 221) that are arranged on the main surfaces of the substrate. The size of the base plate (1) in lateral directions (x, y) amounts to a multiple of the respective size (Lx, Ly) of a zone (11 - MN) of the component. The actual resistance of the intermediate substrate zone located between the large-area electrodes (211, 221) is measured. A covering area of a zone (11 - MN) of the component required for obtaining the setpoint resistance is calculated based on said measurement. The zone of the component that has the calculated covering area is cut out of the base plate (1) in order to produce the component. The tolerance error resulting from the substrate thickness that may be different from the setpoint value can be compensated by adjusting the surface of the zone of the component at the actual substrate thickness.