Servo Motor and Drive Selection Key Points

I. Core Motor Selection

Load Analysis

* Inertia Matching: Load inertia JL should be less than or equal to 3 times motor inertia JM. For high-precision systems (e.g., robotics), JL/JM
* Torque Requirements:Continuous Torque: less than or equal to 80% of rated torque (prevents overheating).Peak Torque: Covers acceleration/deceleration phases (e.g., 3 times rated torque).
* Speed Range: Rated speed must exceed actual maximum speed with 20%-30% margin (e.g., 3000 RPM right less than or equal to 2400 RPM).

Motor Types

* Permanent Magnet Synchronous Motor (PMSM): Mainstream choice with high power density (30%-50% higher than induction motors), ideal for robotics.
* Induction Servo Motor [https://www.hjstmotor.com/servo-system/]: High-temperature resistance and low cost, suitable for heavy-duty applications (e.g., cranes).

Encoder and Feedback

* Resolution: 17-bit (131,072 PPR) for most tasks; nanometer-level positioning requires 23-bit (8,388,608 PPR).
* Types: Absolute (position memory on power-off), incremental (requires homing), or magnetic (anti-interference).

Environmental Adaptability

* Protection Rating: IP65+ for outdoor/dusty environments (e.g., AGV motors).
* Temperature Range: Industrial-grade: -20 degrees C to +60 degrees C; specialized: -40 degrees C to +85 degrees C.

II. Drive Selection Essentials

Motor Compatibility

* Current Matching: Drive rated current greater than or equal to motor rated current (e.g., 10A motor right greater than or equal to 12A drive).
* Voltage Compatibility: DC bus voltage must align (e.g., 400V AC right ~700V DC bus).
* Power Redundancy: Drive power should exceed motor power by 20%-30% (for transient overloads).

Control Modes

* Modes: Position/speed/torque modes; multi-axis synchronization requires electronic gearing/cam.
* Protocols: EtherCAT (low latency), Profinet (industrial-grade).

Dynamic Performance

* Bandwidth: Current loop bandwidth greater than or equal to 1 kHz ( greater than or equal to 3 kHz for high-dynamic tasks).
* Overload Capability: Sustained 150%-300% rated torque (e.g., palletizing robots).

Protection Features

* Brake Resistors: Required for frequent starts/stops or high-inertia loads (e.g., elevators).
* EMC Design: Integrated filters/shielding for industrial noise resistance.

III. Collaborative Optimization

Inertia Adjustment

* Use gearboxes to reduce inertia ratio (e.g., planetary gearbox 10:1 right inertia ratio 0.3).
* Direct drive (DD motor) eliminates mechanical errors for ultra-high precision.

Special Scenarios

* Vertical Loads: Brake-equipped motors (e.g., elevator traction) + drive brake signal sync (e.g., SON signal).
* High Precision: Cross-coupling algorithms

IV. Selection Workflow

* Requirements: Define load torque, peak speed, positioning accuracy, and communication protocol.
* Simulation: Validate dynamic response (MATLAB/Simulink) and thermal stability under overload.
* Testing: Tune PID parameters and inject noise for robustness checks.

Summary: Servo selection prioritizes load dynamics, performance, and environmental resilience. ZONCN servo motor and drive kit saves your trouble of selecting 2 times, just consider the Torque, Peak RPM, and Precision.

Media Contact
Company Name: SICHUAN HONGJUN SCIENCE AND TECHNOLOGY CO., LTD.
Email:Send Email [https://www.abnewswire.com/email_contact_us.php?pr=servo-motor-and-drive-selection-key-points]
Phone: +86 15008220675
Country: China
Website: https://www.hjstmotor.com/

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