The setup presented here shows how a “mini” test bench can be integrated even in the smallest spaces. The “test bench drawer” is built into a 19’’ rack and can be used for many applications that absolutely require the real drive unit to be integrated in the test system. The amount of performance data of the load machines is manageable and allows for extensive mechanical tests. The example setup shows a load motor for an EPS servomotor. In closed-loop operation, a steering model that provides the target values for the load machine is computed on the real-time hardware. This virtualization of the mechanics increases flexibility, which is particularly useful for power packs (generic drive units).
Features:
References:
Motor Characteristics | ||
---|---|---|
Motor | Synchronous motor without transmission | |
Motor encoder | HIPERFACE® motor feedback system | |
Servo amplifier | LTi Servo One | |
Control strategy torque | Forward control (motor current) | |
Control strategy position | Cascade control with subsidiary speed and torque control (no controller on dSPACE real time hardware) | |
Maximum continuous torque [Nm] | 6 | |
Maximum displacement [deg] | unlimited | |
Maximum speed [rpm] | 6000 |
Steady State Control Accuracy | ||
---|---|---|
Torque [Nm] | ±0.1 (depends on device under test and torque transducer) | |
Position [deg] | ±0.01 |
Torque Sensor Characteristics | ||
---|---|---|
Measurement range [Nm] | ±10 | |
Accuracy [Nm] | ±0.01 |
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