Analysis of Motor Selection Logic and Applications in Automotive Manufacturing and Logistics Scenarios

1. Fundamental Selection Logic: Define Requirements First, Match Parameters Later

The complexity of automotive logistics means that motor selection cannot be “one-size-fits-all.” The selection system can be divided into condition-based selection and mechanism-based selection. The former focuses on technical features, while the latter addresses core actuators in logistics systems.

1.1 Core Requirement Dimensions: Power vs. Precision

• Basic Power-Drive Scenarios: e.g., AGV carriers, conveyors, focusing on continuous stability, load capacity, and delivery time.

• High-Precision Control Scenarios: e.g., precise positioning, indexing tables, focusing on speed stability, stop accuracy, and control method.

Table: Key Parameter Comparison

2. Mechanism-Based Selection

2.1 Belt Mechanisms

• Vertical Transport: Requires stop safety and positioning accuracy. Electromagnetic brake motors prevent falling; stepper motors ensure accuracy within 0.02 mm.

• Multi-Speed Conveying: Brushless motors ensure smooth transitions between loading, transport, and positioning, with ±0.2% speed variation.

2.2 Screw Mechanisms

• Instant Reversal: Brushless or stepper motors respond in milliseconds, avoiding torque lag.

• Short-Range High-Precision: Stepper motors with closed-loop control achieve 0.005 mm resolution, with multi-axis deviation under ±0.01 mm.

2.3 Indexing Tables

• High-Speed Positioning: Stepper motors drive heavy loads with <0.5s positioning time, suitable for high-frequency switching.

• Overload Protection: Hybrid control avoids “step loss,” switches to closed-loop under overload, and outputs alarms.

2.4 AGV Carriers

• Power & Endurance: Brushless motors offer >85% efficiency, extending endurance to 10–12 hours per charge.

• Environment Adaptability: IP66 protection, compact size, suitable for oil/water environments and tight spaces.

3. Technology Upgrade Trends

• Absolute Encoders: Enable power-off memory and “resume-from-interruption” for AGVs.

• Bus Communication: EtherCAT, Modbus, CC-Link supported, allowing MES integration and remote monitoring.

• Miniaturization & Power Density: Compact motors (20–40 mm) deliver 10–50 N·m torque, ideal for precision assembly.

Conclusion

Motor selection translates logistics requirements into technical parameters. By combining scenario-specific needs with precise technical matching, manufacturers can achieve fault-free, high-efficiency logistics operations.