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Servo Motor Selection Calculation

Torque Required Formula:

\[ \text{Torque Required} = \frac{\text{Load Torque}}{\text{Efficiency}} \]

N·m
dimensionless (0-1)

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1. What is Servo Motor Torque Calculation?

The Servo Motor Torque Calculation determines the required torque for a servo motor to drive a given load, accounting for system efficiency. This is essential for proper motor selection and system design.

2. How Does the Calculator Work?

The calculator uses the torque required formula:

\[ \text{Torque Required} = \frac{\text{Load Torque}}{\text{Efficiency}} \]

Where:

Explanation: The formula accounts for energy losses in the transmission system by dividing the load torque by the system efficiency.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for selecting the right servo motor size, preventing motor overload, ensuring system reliability, and optimizing performance and energy consumption.

4. Using the Calculator

Tips: Enter load torque in N·m and efficiency as a decimal between 0.01 and 1. All values must be valid (load torque > 0, efficiency between 0.01-1).

5. Frequently Asked Questions (FAQ)

Q1: What is typical efficiency for servo systems?
A: Efficiency typically ranges from 0.85 to 0.95 for well-designed servo systems, but can vary based on transmission type and quality.

Q2: Should I include a safety factor?
A: Yes, it's recommended to apply a safety factor of 1.5-2.0 to the calculated torque requirement for reliable operation.

Q3: What affects system efficiency?
A: Efficiency is affected by gearbox type, bearing friction, lubrication quality, alignment, and mechanical wear.

Q4: How do I measure load torque?
A: Load torque can be calculated from force and distance, measured with torque sensors, or estimated from motor current and known parameters.

Q5: What if my application has varying loads?
A: For applications with varying loads, calculate torque requirements for peak, continuous, and RMS conditions to ensure proper motor selection.

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