【虹科方案】低成本 CAN FD 賦予機器人「指尖智慧」- 精密協作控制解析 - 虹科電子有限公司

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HongKe Solutions] Redefining Precision Collaboration: How Low-Cost CAN FD Gives Robots "Fingertip Intelligence"?

High-efficiency control system based on CAN FD technology for the Hongke Nimble Hand

In the R&D landscape of humanoid robots, dexterous hands are the key bridge connecting technological conception and practical application. In order to realize millimeter-level motion and millinews-level force control, a set of efficient and accurate testing and verification program is the core guarantee for this pair of "robotic hands" to move from laboratory prototype to mass production.

The CAN FD technology-based test solution created by HONGKE is a deep integration of high-speed communication, intelligent monitoring and precise control, providing full-dimensional capability support for the R&D, quality inspection and application of the dexterous hand. The Smart Hand, which is the core execution task in this program, comes from HTC's partner, Smart Smart, and its excellent hardware performance provides a key carrier for the value verification of HTC's test program.

When Dexterity Meets CAN FD: Industry Pain Points and Technology Opportunities

As the core execution part of humanoid robot, robot dexterous hand needs to be equipped with multi-degree-of-freedom movement, force sensing and precise operation ability, and its application scenarios cover various fields such as industrial sorting, medical rehabilitation and scientific research experiments.

In order to realize the precise testing of "millimeter-level motion and milli-Nm-level force control" of dexterous hands, the traditional communication and testing means have the pain points of insufficient bandwidth, poor real-time performance, and complicated data parsing.

In the robotics industry, EtherCAT or CAN FD is often used as the core communication protocol. Among them, CAN FD stands out for its stable transmission quality and extremely low cabling costs.

As an upgraded version of the traditional CAN bus, CAN FD raises the data segment transmission rate to 8 Mbps and extends the data load to 64 bytes per frame, while retaining the advantages of high reliability and real-time performance of the CAN bus, which is a perfect match for the needs of dexterous robots for "high-speed command transmission + multi-sensor data return".

The core of HTC's solution: the three-in-one technology synergy

With the core logic of "communication + monitoring + control", HONGKE's dexterous motion control solution builds up a complete verification link from signal acquisition to motion execution, so that every action and every set of data of the dexterous hand can be monitored and adjusted.

Dexterity Unit

Supplied by Hongke's partner, Dexterous Intelligence, this dexterous hand features a high degree of freedom (e.g., 19DOF), high-precision force/position sensors, and a biomimetic structure design that reproduces anthropomorphic movements and fine manipulation, and is the core execution unit of the test solution.

CAN FD Test Tool

HONGKEI supports 8 CAN(FD) and 2 1000BASE-T1 bus workstations with 1 Mbps transmission rate for smart arbitration segment, 5 Mbps transmission rate for data segment, and 64-bit single frame load with 1-microsecond timestamping accuracy, which provides the hardware cornerstone for "high-speed command issuance + real-time data return".

HONGKE's Vehicle Network Communication Test Board is a high-performance industrial controller motherboard for monitoring, emulating, and simulating CAN(FD) and T1 network messages with powerful data processing and communication capabilities. It integrates 8 CAN(FD) interfaces and 2 1000BASE-T1 interfaces, and is compatible with PCAN underlay driver, which meets the test and data transmission requirements in complex communication network environments, and is widely used in automotive research and development, intelligent transportation, and vehicle inspection.

Customized Software Platform -- Hongke PCAN-Explorer 6

Based on HONGKE's PCAN-Explorer 6, the software platform is specially adapted to the communication protocols of the Dexterity Smart Hand, making the complex testing process simple and efficient:

Signal Monitoring

Instantly collects and analyzes the multi-dimensional signals from the motor current, temperature, angle sensor, force sensor, etc. of the dexterous hand, and presents them in the form of graphs and charts (as shown in this article's "Left and Right Hand Software Monitoring Chart", you can independently monitor the status of the motor and sensor data of the left hand and the right hand, respectively).

Instruction to send

It supports one-touch motion command sending for key gestures, and also realizes fine motion control for single-joint and multi-joint through the parameterized interface, with a measured delay deviation of less than 5 microseconds to meet the synchronization requirements of milli-Nm force control.

Data Analysis

Converts raw data on the CAN FD bus into easy-to-understand physical quantities through database file parsing and supports data logging, offline analysis and fault tracing.

System Deployment: From Communication Testing to Anthropomorphic Control

The whole system deployment process is simple and efficient, and no complicated professional operation is required to complete the test preparation.

Quickly establish communication links

As shown in the figure, the whole system consists of Dexterous Intelligent Smart Hands, HONGKE BUS workstations and the host computer (running HONGKE PCAN-Explorer 6 customization project).

After completing the hardware connection, the "Bus Configuration" module of Avision PCAN-Explorer 6 can be used to set the CAN FD communication parameters (e.g., baud rate, communication data, etc.) to establish a high-speed communication link between the dexterous hand and the test tool.

Establishment of database and multi-dimensional signal monitoring - "status transparency" for dexterous hands

In the Symbol Editor of the PCAN-Explorer 6 software, you can freely create a CAN (FD) bus-based communication database, including descriptions of specific messages and signals, layout configurations, and various data parameters that may be used in virtual variables or customized projects.

By loading database files, customized projects can be advanced from the "link level" to the "application level", allowing even non-technical people to complete basic communication tests and command drivers with this set of customized projects:

Motor status monitoringReal-time monitoring of motor speed, position, current and temperature to ensure safe operation.
Sensor Data MonitoringAnalyze the output of angle sensors and force sensors (normal force, tangential force) to verify the positional accuracy and force control performance.
Communication status monitoringReal-time tracking of CAN FD bus load rate and error frames to ensure communication link stability.

From Lab to Application: Accelerating the Industrialization of Dexterous Hands

Based on the CAN FD technology, the HONGKEI robotics dexterity test solution constructs a complete, high-precision full-link test system through the deep synergy of hardware and software.

With the professional technical structure of "hardware accurate transmission + software intelligent analysis" and the strict logic of traceability of the whole chain data and reproducibility of the testing process, the solution not only provides quantitative support for the iteration of dexterous hand technology, but also becomes an important technological benchmark for the development of standardization and precision in the robotics industry.

At present, the dexterous hand has been applied in mass production in the fields of industrial sorting and power inspection, etc., and the solution will continue to provide reliable technical guarantee and testing support for its industrialization and large-scale landing.

Data Security and Compliance

High-Performance Data and Automation

ADAS Simulation and Testing Framework

Signal Analysis and Sensing

In-Vehicle Network Communications

Industrial Internet of Things and Digital Factories

AI Machine Vision

Automation Control

Pharmaceutical Cold Chain and Environmental Monitoring

Laboratory Automation and Microfluidics

Environmental Monitoring and Facility Management

Critical Infrastructure Communications and Remote Collaboration

Professional Electronic Testing and Measurement