Robot Sensor Position Storage for Accurate Data Interpretation
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Solution Overview
Problem
In robotic systems, when the relative position of a sensor with respect to a motor is unknown, it is challenging to utilize the sensor information effectively, as it is unclear which direction the sensor information relates to, leading to difficulties in accurately interpreting and utilizing the data for control and calibration purposes.
Innovation Solution
A robot system that includes a memory to store position information indicating the relative position of the sensor with respect to a reference position related to the motor, allowing for the correct interpretation and utilization of sensor information by specifying the relevant direction, and a sensor information correction unit that corrects sensor data based on this position information and the state of the link, enabling accurate data utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the relative position of the sensor with respect to the motor is unknown, then the sensor can be freely positioned, but the sensor information cannot be effectively utilized due to uncertainty about the direction and reference frame
Solution Approach 1:
The patent applies preliminary action by storing the relative position information of the sensor with respect to the motor in a memory device before the robot operates. This pre-stored position data (including distance and angle information) enables the control unit to later accurately interpret sensor readings without requiring real-time calibration or complex transformations, thus resolving the contradiction between positioning flexibility and data interpretability.
2Device complexity
If the relative position of the sensor is not stored, then the system structure remains simple, but accurate control and calibration cannot be achieved
Solution Approach 1:
The patent introduces an intermediary element - a memory device - that stores the relative position information between the sensor and motor. This intermediary storage component bridges the gap between the simple physical arrangement and the complex control requirements, enabling accurate control and calibration while maintaining relatively simple system architecture. The memory acts as a mediator that preserves spatial relationship data without adding complex mechanical structures.
Data Source
AI summary
A robot system includes: a first link that is a part of a robotic arm; a first motor that moves according to a rotation of the first link; a first sensor having a fixed location with respect to the first motor; and a memory configured to store first position information indicating a relative position of the first sensor with respect to a first reference position of the first motor.