Core Viewpoint - The article discusses the importance of humanoid robot head design, arguing that it is essential for perception, interaction, and structural optimization, contrary to the view that humanoid features are unnecessary [1][22][25]. Group 1: Perception Capabilities - The head of humanoid robots serves as the optimal platform for sensory systems, directly influencing the precision, range, and efficiency of perception [3][5]. - Human-centric design principles dictate that the head's height aligns with human eye level (approximately 1.5-1.7 meters), maximizing the robot's ability to perceive its environment [3][4]. - Without a head, sensory devices would be poorly positioned, leading to decreased recognition accuracy and limited environmental awareness [4][8]. Group 2: Interaction and Social Integration - The head is crucial for emotional connection and interaction, especially in service scenarios like healthcare and education, where human-like features enhance user acceptance [10][11]. - Proper layout of interaction devices (speakers, displays) on the head aligns with human communication habits, improving interaction efficiency [11][13]. - Humanoid robots with heads can simulate human expressions, reducing psychological barriers and fostering trust during interactions [10][13]. Group 3: Structural and Control Optimization - The head contributes to the robot's structural balance, with its weight distribution mimicking human proportions to ensure stability during movement [15][17]. - Key control modules are often integrated into the head, allowing for rapid processing and response to sensory input, enhancing operational safety [15][17]. - Advanced neck designs in humanoid robots improve dynamic perception and interaction capabilities, further emphasizing the head's structural significance [17][18]. Group 4: Technological Evolution and Industry Trends - The design of humanoid robot heads is evolving towards lightweight, high-integration, and functional solutions, addressing earlier criticisms of impracticality [18][21]. - Major industry players are investing in head design, recognizing its role in driving technological advancements across the robotics ecosystem [21][25]. - The head is seen as a "soul carrier" of humanoid robots, embodying the blend of technical rationality and humanistic needs, essential for future developments in the field [22][23].