FAQ

A motor dynamometer is a device used to test the performance of electric motors or engines.
It simulates different load conditions and measures parameters such as torque, RPM, power, and efficiency.
During R&D and quality control, a dynamometer helps engineers evaluate output characteristics, energy conversion efficiency, and temperature rise performance.

Based on load mechanism, they can be categorized as:

• Magnetic Powder Dynamometer – Suitable for medium/low-speed, high-torque testing; fast response and stable control.
• Hysteresis Brake Dynamometer – Suitable for high-speed, low-torque testing; fast response and stable control.
• Servo Motor Dynamometer – Capable of four-quadrant operation (motoring/braking), high-precision control, ideal for high-speed dynamic load testing and regenerative energy systems.
• Prony Winding Brake – Suitable for motors under 20 W with high rotational speed; no coupling required, significantly improving measurement accuracy for very small motors.

Key considerations include:

1. Motor power and torque range (determines dyno capacity).
2. Maximum test speed (must match motor’s design speed).
3. Test purpose (R&D, durability, production line, performance curve).
4. Required control modes (constant speed, torque, power, 4-quadrant simulation).
5. Data acquisition accuracy and software interface.
6. Cooling system (water-cooling or air-cooling), depending on continuous duty needs.
7. Space and installation conditions (horizontal/vertical axis, fixture size).

4-Quadrant (4Q) dynamometer can operate in four states: forward/reverse rotation and motoring/braking.
It can simulate real-world operating conditions such as acceleration, deceleration, and regenerative load. Common applications include:

• EV motor performance & regeneration tests
• ECU response verification
• Energy recovery system tests

These systems are typically based on servo motors or DC motors, paired with high-precision torque sensors and advanced control software.

Common test results include:

• Torque (N·m)
• Speed (RPM)
• Power (W / kW / HP)
• Efficiency (%)
• Input voltage/current (V / A)
• Motor temperature rise, noise, vibration
• Load curve, startup curve, BEMF curve
• Durability and stability performance
• Regenerative energy efficiency (if applicable)

Torque is the core parameter for calculating power and efficiency.
If measurement error exceeds ±0.2%, performance curves may be misinterpreted. High-precision torque sensors provide:

• More stable closed-loop control
• Accurate power calculations
• Reduced data drift and cumulative error

This is especially important for R&D and calibration testing.

Yes.
Using the control system, one can set acceleration/deceleration profiles, slope simulation, variable-frequency loads, and resistance simulation.
With dedicated software, users can create custom test scripts (profiles) to apply different torque or speed values in stages to replicate real operating environments.

Modern dynamometers support multiple communication interfaces (CAN, EtherCAT, RS485, MODBUS). They can integrate with:

• Motor controllers (MCU / Inverter)
• Power supplies and load banks
• Temperature, flow, and pressure sensors
• DAQ systems, LabVIEW, PLC
• Durability testers and environmental chambers

1. Set the target speed or torque condition.
2. Measure input electrical power (Pin = V × I × PF).
3. Measure output mechanical power (Pout = Torque × RPM × k).
4. Efficiency = Pout / Pin × 100%.

The dynamometer can generate real-time efficiency maps for motor optimization.

A properly used dynamometer can last over 10 years.
Recommendations:

• Check cooling system, pump, and bearing lubrication every 6 months.
• Calibrate the torque sensor annually.
• Release load and keep the system dry before long-term storage.
• For regenerative systems, regularly inspect insulation and overload protection of the energy recovery unit.

• Integrated test platform for motors, rotors, and controllers.
• Supports servo-type four-quadrant regenerative systems.
• Equipped with high-precision torque sensors and multi-protocol communication.
• Self-developed control software with automated test scripting.
• Custom fixtures and safety protection designs available.
• Applicable to EV motors, BLDC motors, ACIM, and other applications.

• Key Metrics: Our test stands (such as the Series 1585 or the Flight Stand series) precisely measure Thrust, Torque, RPM, Voltage, Current, and motor efficiency.
• Core Benefit: By converting these metrics, the system calculates the overall propulsion efficiency of the motor and propeller combo [UAV Propulsion Systems], helping R&D engineers optimize drone battery life and payload capacity.

We offer a comprehensive range of testing solutions from consumer drones to large eVTOLs (electric Vertical Takeoff and Landing aircraft):

• Consumer / Small Drones: Series 1585 (Supports up to 5 kgf thrust / 2 Nm torque).
• Industrial / Medium Drones: Flight Stand 15 / 50 (Supports 15 kgf to 50 kgf thrust).
• Heavy Lift Drones / eVTOL Aircraft: Flight Stand 150 / 500 (Supports up to 500 kgf thrust / 1500 Nm torque).
  (Note: We also provide coaxial drone testing setups and dedicated test stands for gas-powered UAVs.)

• Dynamic Balance Calibration: We offer Propeller and Motor Balancers compliant with ISO 21940-11 standards to minimize airframe vibration and extend component lifespan.
• Environmental Simulation: Our systems integrate with WindShape modular wind tunnels to simulate real-world wind and airflow inside the lab, allowing you to test flight stability, waterproof capabilities, and wind resistance limits.

• Ready-to-Use: The proprietary Flight Stand software is included with your equipment purchase; there are no monthly subscription fees.
• Automated Testing: The software supports automated test scripts (custom throttle curves). Data is exported in real-time to CSV format, making it easy to import into MATLAB or Excel for advanced analysis.

• Factory Warranty: All products include a 1-year limited factory warranty from Tyto Robotics.
• Repair Workflow: If you encounter any technical issues, contact our local technical support team first. We will prioritize video diagnostics or send technicians to your site. If a factory repair is required, we handle all logistics and communication with the Canadian headquarters.