Robot Emotional Expression Control for Recognition and Decision Uncertainty
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Solution Overview
Problem
Current technologies face challenges in making robot devices perform actions that evoke feelings of personal attachment in users, as they struggle to express emotions and intentions effectively, leading to a mechanical impression rather than a living-like interaction.
Innovation Solution
A control device and method that includes a recognizing unit, action decision managing unit, behavior managing unit, and drive control unit, which determine whether to exhibit emotional expressions based on environmental recognition difficulty and user attention, enabling the robot to perform actions that simulate emotions, character, and thinking, thereby evoking user attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the robot device performs random movements to enhance entertainment aspect, then the user interest is improved, but the ability to express specific emotions and intentions deteriorates
Solution Approach 1:
The patent applies dynamics by making the robot's behavior mode adjustable between random entertainment movements and structured emotional expressions. The control device dynamically switches between different behavior management modes based on situation, allowing the robot to adapt its movement pattern from purely random to emotionally meaningful actions that convey specific intentions while maintaining user interest.
Solution Approach 2:
The patent introduces an intermediary layer (the control device with behavior managing unit) that translates between random movement generation and structured emotional expression. This intermediary processes the random movements and filters or shapes them into actions that convey specific emotions, acting as a mediator between the entertainment aspect and the emotional communication aspect.
2Reliability
If the robot device continuously exhibits emotional expressions to evoke personal attachment, then user attachment feeling is improved, but power consumption increases
Solution Approach 1:
The patent applies periodic action by making emotional expression exhibition intermittent rather than continuous. The control device determines appropriate timing for emotional expressions based on situational context, creating periodic bursts of emotionally meaningful actions separated by periods of normal operation. This maintains user attachment while significantly reducing overall power consumption compared to continuous emotional expression.
Solution Approach 2:
The patent changes the parameter of emotional expression frequency from constant high frequency to variable frequency based on situational parameters. The control device adjusts whether to exhibit emotional expressions by evaluating recognition difficulty and action decision difficulty parameters, switching the emotional expression parameter on or off appropriately to balance user attachment with power conservation.
3Loss of information
If the robot device exhibits emotional expressions during difficult recognition or action decision, then user understanding is improved, but system complexity increases
Solution Approach 1:
The patent applies feedback by using the output from the recognizing unit and action decision managing unit (recognition difficulty and action decision difficulty) as input to the behavior managing unit. This feedback loop allows the system to automatically adjust emotional expression based on the current operational state, improving communication clarity during difficult operations without requiring complex external control mechanisms.
Solution Approach 2:
The control device provides self-service by autonomously determining when to exhibit emotional expressions based on its own internal state (recognition difficulty and action decision difficulty). The behavior managing unit uses the difficulty levels generated by other units within the same control device to make decisions about emotional expression, eliminating the need for external monitoring or complex inter-system communication.
Data Source
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AI summary
A control device includes a recognizing unit that recognizes the external environment based on sensing information; an action decision managing unit that, based on the recognized external environment, decides on the actions to be taken; a behavior managing unit that, based on at least either the difficulty level of recognition for the recognizing unit or the difficulty level of action decision for the action decision managing unit, determines about whether or not to exhibit emotional expressions; and a drive control unit that, based on the determination performed by the behavior control unit, controls the execution of the actions corresponding to emotional expressions.