Roll Stabilizer Sensor Board Segmentation
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Solution Overview
Problem
Existing roll stabilizers for motor vehicles face limitations in arranging sensors due to the need for the motherboard to be positioned near the rotor output shaft, restricting flexibility in using the available construction space within the housing.
Innovation Solution
The design separates the motherboard from sensor boards, allowing the rotor-position-sensor board to be arranged parallel and the torque-sensor board transverse to the motherboard, enabling independent placement and reducing their size, with a common holding element and flexible printed circuit board connections for improved flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor is arranged on the motherboard to capture rotor position, then the rotor position can be captured, but the motherboard must be arranged in the immediate vicinity of the output shaft of the rotor, restricting freedom in arranging the motherboard within the housing
Solution Approach 1:
The patent divides the sensor arrangement into separate sensor boards that are independent from the motherboard. The rotor-position sensor is placed on a dedicated sensor board that can be positioned near the rotor output shaft without constraining the motherboard's location, thus resolving the contradiction between measurement capability and arrangement freedom.
2Measurement precision
If the motherboard is arranged near the output shaft of the rotor to capture rotor position, then the rotor position can be captured, but the construction space within the housing cannot be utilized flexibly
Solution Approach 1:
By segmenting the sensor functions into separate sensor boards, the patent enables optimal spatial distribution of components. The sensor boards can be positioned exactly where measurement is needed, while the motherboard can be located to optimize construction space utilization and electrical connections, resolving the contradiction between measurement accuracy and space efficiency.
3Device complexity
If the sensor board is integrated with the motherboard, then the structure is simplified, but the sensor board size increases and positioning flexibility decreases
Solution Approach 1:
The patent applies segmentation by creating separate sensor boards for different sensing functions (rotor position, torque, temperature). Each sensor board is compact and can be independently positioned near its respective measurement target, maintaining structural simplicity while maximizing positioning flexibility and minimizing board sizes.
Data Source
AI summary
A roll stabilizer for a motor vehicle includes a plurality of sensors for detecting a plurality of measurement variables, in particular a torque sensor, a rotor position sensor and optionally an actuator temperature sensor. Each of the sensors resides on a separate sensor circuit board which is separate from a motherboard. The motherboard has electronics for evaluating the measurement variables detected by the sensors and/or for forwarding said measurement variables to an external control device.