Tiny Motor Test System
With the unique application of Prony (winding) braking, which is the most proven
method for torque testing of small / tiny motors. It automatically obtains the T-N characteristic of tiny motor with high accuracy.
For small & Tiny torque testing, this is the most mature and highest precision of measurement method.
Advantages:
- Minimal moment of inertia of the tester
- By adopting Prony braking, the system provides stable measurement unaffected by moment of inertia of the tester and coupling loss, which is unavoidable in conventional torque testers. For micro motors, zero inertia testing is possible by winding the brake thread directly on the shaft.
Tiny Motor Curve (x-axis: RPM y-axis: Torque (g.cm))
Torque / Load-Sensor / Pulleys Specifications are as follows:
| Model | Load-Sensor | (Pulley Diameter) [mm] | ||||
|---|---|---|---|---|---|---|
| Directly around the axis*1 | 5mm | 10mm | 20mm | 40mm | ||
| JP-R5N | 0.5 N | – | 1.25 mNm | 2.5 mNm | 5 mNm | 10 mNm |
| JP -1N | 1N | – | 2.5 mNm | 5 mNm | 10 mNm | 20 mNm |
| JP -2N | 2N | – | 5 mNm | 10 mNm | 20 mNm | 40 mNm |
| JP -5N | 5N | – | 12.5 mNm | 25 mNm | 50 mNm | 100 mNm |
| JP -10N | 10N | – | 25 mNm | 50 mNm | 100 mNm | 200 mNm |
| JP -20N | 20N | – | 50 mNm | 100 mNm | 200 mNm | 400 mNm |
- Directly around the axis *1: Torque and motor shaft diameters.
- Using a pulley: torque ( mNm ) = Load – Sensor ( N ) x Pulley diameter ( mm ) / 2
- Do not use pulleys: torque ( mNm ) = Load – Sensor ( N ) x Motor shaft diameter ( mm ) / 2
System specifications are as follows:
| Brake | Prony braking |
|---|---|
| Load-Sensor | Six types: 0.5 N, 1 N, 2 N, 5 N, 10 N, 20 N |
| Sensor sensitivity | DC 2 V / rating |
| Torque measurement precision | Within ±1% of torque range |
| Maximum allowable load | 200% of Sensor rating |
| Torque measurement range | T = Sensor Rating × Pulley Diameter / 2 |
| Computer Operating System | Microsoft Win7 |
| Power supply | Single-phase AC 100 – 120 V ±10%, 50 / 60 Hz |
| Single-phase AC 200 – 240 V ±10%, 50 / 60 Hz |
Options:
- Add Non-contact speed Sensor, which can measure the T/N curve of motor
- Add power-analyzer, which can measure the motor’s input V / A / W & motor efficiency