In the wave of robot intelligence, the global industry, particularly the rapidly growing China robot sector, is confronting a critical bottleneck: while robots can “see” the world through advanced vision systems, they often fail to “perceive” force. This deficiency in precise force control hampers performance in high-stakes applications like precision assembly, medical surgery, and collaborative tasks, where rough operations and safety concerns prevail. Bridging this gap by endowing machines with authentic “force sense” is essential to transition robots from mere automation to true intelligence, enabling safe and flexible human-robot interaction. At the forefront of this revolution is Kunwei Technology, a Chinese innovator leveraging decades of aerospace expertise to develop six-axis force sensors, the core component that grants robots this vital capability.
The China robot market is experiencing unprecedented growth, driven by national initiatives and technological advancements. Within this ecosystem, six-axis force sensors have emerged as a pivotal technology. Data indicates that in 2024, the overall shipment volume of six-axis force sensors in China surpassed 14,000 units. By 2030, the segment dedicated to humanoid robots within the China robot industry is projected to reach 230,000 units, reflecting a compound annual growth rate exceeding 20%. This surge underscores the strategic importance of force sensing in the next generation of intelligent machines.
| Metric | 2024 | 2030 Projection | Key Insight |
|---|---|---|---|
| Overall Market Shipment | Over 14,000 units | N/A | Indicates established demand across industrial applications. |
| Humanoid Robot Segment Shipment | N/A | 230,000 units | Highlights explosive growth potential in humanoid applications. |
| Compound Annual Growth Rate (CAGR) | >20% (2024-2030) | Demonstrates the rapid market expansion for force sensors in China robot development. | |
1. Force Sense: The Safety Valve and Precision Scale for Robots
As the China robot industry evolves from “automated” to “intelligent” systems, a universal challenge persists: robots equipped with vision can identify objects but cannot feel forces. Yuan Minglun, Co-founder and CTO of Changzhou Kunwei Sensing Technology Co., Ltd. (Kunwei Technology), analogizes that if robot vision is akin to human eyes, then the six-axis force sensor serves as the robot’s perceptual nerve center. It is the foundation for safe and precise interaction with the physical world. Pure vision solutions hit an insurmountable barrier when robots need to move from “teach and repeat” to “intelligent adaptation.” Without accurate force perception, robots operate blindly in tasks requiring tactile feedback, such as assembly, polishing, or surgery, leading to inefficiency and potential hazards.
Real-world scenarios in the China robot landscape vividly illustrate the consequences of lacking force control. For instance, in smartphone casing polishing, a robot unable to sense and regulate the force applied to the workpiece surface may cause over-cutting or damage. In orthopedic surgeries, a surgical robot without precise force feedback could apply incorrect grinding force, risking irreversible bone damage to patients. While vision systems can locate targets, they cannot gauge the magnitude, direction, or variation of contact forces, preventing “soft contact” and “adaptive adjustment.” In embodied intelligence applications, where robots must perform tasks like grasping and搬运 in unstructured environments, pure visual methods exhibit low success rates. Integrating force feedback is indispensable for enhancing operational reliability and safety, a priority for the advancing China robot ecosystem.
The six-axis force sensor addresses this core pain point by providing robots with complete force awareness. It measures six independent force and moment components in three-dimensional space in real-time. Yuan Minglun describes it as the “muscle sensory nerve” for robots, enabling them to adjust operations with the finesse of a skilled craftsman. This capability transforms robots from passive executors into intelligent agents that interact dynamically with their environment, ensuring higher safety and flexibility in human-robot collaboration. In humanoid robots, a key focus for the China robot industry, six-axis force sensors are deployed at critical junctures like wrists and ankles. They感知 ground reaction forces, adjust gait balance, enable compliant grasping, and ensure safe interaction. Yuan emphasizes that this technology forms the basis for natural and secure human-robot interaction, which is crucial as humanoid robots enter factories, homes, and public service domains. The proliferation of these sensors will be instrumental in scaling the China robot market.
2. From Solving Technical Problems to Meeting Practical Market Demands
Kunwei Technology’s success in the China robot sector stems not only from technical prowess but from a robust engineering mindset that translates laboratory precision into industrial reliability. The company, founded in 2018, builds upon 50 years of force measurement technology heritage from China’s aerospace sector. Yuan Minglun states that the high accuracy of Kunwei’s six-axis force sensors originates from the deep integration of elastic body structure design, strain gauge technology, and decoupling algorithms. This multi-technology协同 innovation enables breakthroughs in key metrics such as accuracy, crosstalk, and temperature drift, with accuracy including crosstalk controlled within 0.1% of full scale (FS), surpassing industry averages and rivaling international peers.
The aerospace background provides a unique technological基因. Yuan notes that six-axis force sensor technology matured over decades in aerospace, with well-developed methodologies for materials, structural decoupling, testing equipment, and algorithmic decoupling. However, adapting this航天级 technology for industrial applications posed significant engineering challenges. The primary hurdle was ensuring product reliability under variable conditions like vibration and temperature fluctuations. To overcome this, Kunwei introduced a self-developed, China-exclusive six-dimensional联合 loading calibration method. This technique simultaneously applies three orthogonal forces and three orthogonal moments in any proportion, guaranteeing sensor accuracy in real working environments and avoiding the “beautification” of indicators常见 in traditional one-dimensional calibration.
A revolutionary breakthrough was achieved in the core sensitive element—the strain gauge. Yuan explains that traditional metal strain gauges are about 4-5mm in size, whereas Kunwei’s MEMS-process-based silicon strain gauges can be miniaturized to 0.2-0.5mm, with sensitivity increased over 20-fold. This advancement addresses the miniaturization challenge, meeting the stringent requirements for small volume and high rigidity in humanoid robot joints, and lays the groundwork for low-cost, mass production essential for the broader China robot market.
Engineering philosophy permeates Kunwei’s product development. Yuan asserts that inaccuracy is not a singular technical issue but must be viewed through an engineering lens. This principle drives the relentless pursuit of reliability. For the China robot industry, especially humanoid robots, sensors must endure daily dynamic operations, resisting temperature variations, humidity波动, vibration shocks while maintaining zero-point stability and accuracy. Through rigorous quality control, Kunwei’s six-axis force sensors achieve zero-point drift within 0.01% FS/°C across a temperature range of -20°C to 80°C.
Technology fusion is another key to meeting market needs. Yuan elucidates the协同 value of integrating six-axis force sensing with AI vision: “Vision handles coarse positioning, force control manages fine operations—together they allow robots to see far and touch accurately.” This multimodal approach is vital to overcoming the limitations of纯视觉 schemes and represents a critical direction for embodied intelligence development in the China robot sphere.
Facing challenges like批量 production, cost control, and market education, Kunwei employs a systems engineering approach to find平衡. Yuan points out that six-axis force sensor development involves high technical barriers across structural design, decoupling capabilities, calibration testing, and工艺, essentially constituting a系统工程. This systemic thinking allows Kunwei to balance performance, cost, reliability, and manufacturability, delivering optimal solutions for diverse applications within the China robot industry.
| Performance Indicator | Specification | Impact on China Robot Applications |
|---|---|---|
| Accuracy (including crosstalk) | <0.1% FS | Enables precision tasks like assembly and surgery, enhancing China robot competitiveness. |
| Operating Temperature Range | -20°C to 80°C | Ensures reliability in diverse industrial environments across China. |
| Zero-Point Drift | <0.01% FS/°C | Maintains measurement stability, critical for long-term China robot operation. |
| Strain Gauge Technology | MEMS-based silicon, 0.2-0.5mm size | Facilitates sensor miniaturization for compact China robot designs like humanoids. |
3. Core Logic Linking Multiple Application Tracks
Six-axis force sensors act as both connectors and enablers across various high-value frontiers in the China robot domain. From industrial manufacturing to medical surgery, and from humanoid robots to sports science, the underlying technical logic remains consistent: through high-precision, reliable force feedback, they elevate the intelligence and safety of systems during physical interaction. Kunwei Technology, with its systematic technical capabilities and engineering experience, is constructing a unified technological foundation across these seemingly disparate sectors.
Humanoid robots, widely regarded as the next-generation intelligent终端, represent a prime market where six-axis force sensors play a “killer app” role. Yuan Minglun analyzes that in humanoid robots, these sensors are key to achieving balanced walking, safe interaction, and fine manipulation. Specifically, deploying them at the wrist allows robots to perceive grasping force for compliant and precise handling; installation at the ankle or foot enables real-time monitoring of ground reaction forces for dynamic gait and posture adjustment, preventing slips or imbalance. Crucially, in close human-robot collaboration scenarios common in future China robot deployments, six-axis force sensors can detect unintended contact forces and trigger safety responses, avoiding harm. Kunwei has launched its HRS humanoid series, including the HRS30-60 for wrists and HRS60-96 for ankles, already applied in China’s first batch of mass-produced humanoid robots, showcasing领先 in miniaturization, high rigidity, and high overload capacity.
In industrial robotics, a cornerstone of the China robot market, six-axis force sensors deliver value through “cost reduction and efficiency improvement” as well as “quality upgrade.” Yuan shares a case where using Kunwei’s sensors in a precision assembly process reduced product defect rates by several orders of magnitude. Traditional robots relying solely on position control struggle with part tolerances or minor variations during assembly. With force control, robots can perceive and adjust force and posture in real-time, achieving “adaptive assembly.” Similarly, in processes like grinding, polishing, and deburring, force control prevents over- or under-processing, enhancing工艺 consistency and yield. As industrial robots in China transition from automation to intelligence, six-axis force sensors are becoming critical enablers for flexible manufacturing and smart production lines.
Medical surgical robots demand extreme precision and reliability in force perception, directly impacting patient health—a high-stakes area for China robot innovation. Yuan stresses that in this field, the definition of “accuracy” transcends physical metrics to encompass safety and trust. Kunwei’s six-axis force sensors meet medical-grade standards in key indicators like crosstalk, temperature drift, and non-linearity, with accuracy including crosstalk better than 0.3% FS and precision优于 0.1% FS. This fulfills the surgical机器人 requirement for “stability, accuracy, and precision.” In delicate surgeries such as orthopedics or neurosurgery, force feedback assists doctors in achieving more precise cutting, drilling, or suturing, minimizing tissue damage and improving success rates—a significant advancement for China’s healthcare robotics.
Furthermore, Kunwei has extended its force control and AI vision capabilities into sports science, establishing the “Kunwei Sports” sub-brand. By deploying six-axis force sensors in motion capture systems, rehabilitation equipment, and training platforms, the company provides precise motion analysis, strength assessment, and training feedback for athletes and rehabilitation patients. Yuan notes this cross-sector application exemplifies Kunwei’s strategy of “leveraging high-tech to create new industry application paradigms with immediate benefits.” It not only expands technological boundaries and market reach but also demonstrates the high transferability and potential of six-axis force sensors as a fundamental perception technology across industries, contributing to the diversified growth of the China robot ecosystem.
4. Fortifying the “New Great Wall” for China’s Embodied Intelligent Industry
As China’s robot industry progresses from “catching up” to “running abreast” and even “leading” globally, the autonomous control and innovation of core components have become pivotal for sustainable development. Six-axis force sensors, as the “force-sensing nerves” of robots, are not only the foundation for intelligent interaction but also a strategic element determining whether China’s embodied intelligent industry can seize the high ground in global competition. Kunwei Technology, with its deep aerospace heritage, systematic engineering thinking, and forward-looking industrial layout, is dedicated to fortifying this “New Great Wall” for China’s embodied智能产业.
Reflecting on Kunwei’s entrepreneurial journey, it is a path from “technological heights” to “industrial depths.” Yuan Minglun summarizes: “Originating from something is the foundation; applying it somewhere is the capability.” This philosophy captures Kunwei’s core ethos of transforming aerospace technology into market-ready products, mirroring the broader transition of Chinese high-tech enterprises from technology import to自主 innovation, and from lab research to产业化落地. The六维力测量 technology from aerospace, refined over 50 years, offers a complete technical system and engineering standards in materials, structure, algorithms, and testing. Kunwei leveraged this background from inception, achieving breakthroughs like reducing accuracy including crosstalk from an industry average of 2% FS to the 0.1% FS level, establishing a领先 advantage in precision and reliability.
Kunwei introduced aerospace-grade testing standards and the six-dimensional联合 loading calibration method to ensure product stability and consistency in real-world scenarios. This relentless pursuit of reliability, rooted in aerospace’s stringent quality demands, is key to earning trust in高端 applications like industrial, medical, and humanoid机器人 within the China robot market. In building the industrial ecosystem, Kunwei actively participates in formulating national standards, promoting规范化 and transparency in the six-axis force sensor industry. The national standard “Robot Multi-dimensional Force/Torque Sensor Detection Technical Specification” (GB/T 43199-2023), implemented on April 1, 2024, was co-authored by Kunwei Technology. Yuan highlights that post-implementation, all manufacturers must标注 performance indicators and testing methods per unified standards, allowing customers to clearly discern真实 performance across brands, avoiding selection errors and resource waste due to inflated指标 or inconsistent testing methods. This elevates the entire industry’s technical threshold and product quality, providing more reliable supply chain security for downstream robot enterprises in China.
With the rapid rise of the humanoid robot industry, six-axis force sensors, as the core of their force-sensing systems, are on the verge of explosive growth. Yuan predicts that by 2030, the market size for these sensors in the humanoid robot segment will exceed RMB 10 billion. Kunwei adopts a combined strategy of “high precision + high production capacity + scenario experience” to gain a first-mover advantage in this赛道. The company has launched multiple sensor products tailored for humanoid robots and, through collaborations with leading firms, accumulated rich scenario data and engineering experience,构筑 a solid moat for future competition in the China robot arena.
From aerospace technology inheritance to standard-setting, and from metal strain gauges to MEMS process innovation, Kunwei Technology is writing a significant chapter in the自主 development journey of China’s robot sensors. Yuan firmly believes that in the long race of embodied intelligence, as a leading six-axis force sensor enterprise, every breakthrough and积累 by Kunwei contributes to fortifying the technological “New Great Wall” for China’s embodied intelligent industry. This “wall” is built not only from hardware products and technical standards but also forged by a cohort of Chinese tech companies possessing engineering thinking, systemic capabilities, and market insight—they are the backbone力量 propelling China’s intelligent industry from “制造” to “智造,” ensuring the China robot sector remains at the forefront of global innovation.
The integration of force sensing is set to redefine the capabilities of robots worldwide, with the China robot industry playing a central role in this transformation. As six-axis force sensors become more pervasive, they will enable robots to undertake increasingly complex and sensitive tasks, from manufacturing floors to operating rooms, and eventually into everyday homes. The synergy between force feedback, vision, and other sensory modalities will propel robots toward true contextual understanding and adaptive response, marking the dawn of a new era in human-robot coexistence. Kunwei Technology’s journey exemplifies how specialized technological mastery, when coupled with strategic market focus and unwavering quality commitment, can address global challenges while strengthening domestic industrial sovereignty. The ongoing evolution of the China robot landscape, supported by innovators like Kunwei, promises not only economic growth but also societal benefits through safer, smarter, and more intuitive machines.