Servo Cable Communication Layout for Compact Reliable Wiring
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Solution Overview
Problem
The connection structure between servo motors and servo amplifiers in robotic or automated systems is large due to the need for multiple wires and cables, which complicates the system's size reduction.
Innovation Solution
A communication system is implemented using a first and second wire with nodes for power and communication signals, along with power and communication circuitries, filters, and a power supplier and receiver, allowing for separate transmission of drive, power, and communication signals over a single cable, reducing the need for dedicated wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple dedicated wires are used for power supply and communication signals, then signal transmission reliability is improved, but connection structure size increases
Solution Approach 1:
The patent combines power supply lines and communication signal lines into a single cable assembly. The cable includes both power supply wires and communication wires integrated together, allowing simultaneous transmission of power and communication signals through one unified connection structure between the servo amplifier and servo motor, thereby reducing overall connection size while maintaining signal transmission reliability
Solution Approach 2:
The cable structure is designed to serve multiple functions: it simultaneously provides power supply transmission and communication signal transmission. By making the cable multi-functional, the system eliminates the need for separate dedicated cables for power and communication, thus reducing connection structure size without compromising reliability
2Measurement precision
If dedicated signal lines are provided for detection devices, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The communication wires in the cable are used for both communication signals and detection device signals. By merging these signal transmission functions into the same wire, the system reduces connection complexity while maintaining measurement precision through dedicated communication protocols and signal processing
3Object-affected harmful factors
If multiple cables are used for power supply and communication, then signal interference is reduced, but connection structure size increases
Solution Approach 1:
Within the integrated cable, power supply wires and communication wires are physically segmented and separated from each other. This internal segmentation prevents electromagnetic interference between power and communication signals while keeping the overall connection structure compact as a single unified cable assembly
Solution Approach 2:
The cable structure acts as an intermediary that manages the interaction between power supply and communication signals. Through proper wiring arrangement and shielding within the cable, it mediates potential interference issues while maintaining compact integration
Data Source
AI summary
A first wire connects a control device to a cable, and supplies a first power signal provided by the control device to the cable. First and second nodes are provided in the first wire. A second wire connects a driving device to the cable, and supplies a first power signal transmitted from the cable to the driving device. Third and fourth nodes are provided in the second wire. A power supplier is connected to the first node and supplies a second power signal. A power receiver is connected to the third node, and provides a second power signal supplied by the power supplier to a detection device. A first communication circuitry is connected to the fourth node. A second communication circuitry is connected to the second node, and transmits a communication signal to or receives a communication signal from the first communication circuitry.