WT Series – DC Wiper & Reversible Wiper Motor Performance Tester
Automatically measures and records:
Reversing load test sequence for DC Wiper & Reversible Wiper motors at incremental torque loads.
Optional for fast testing via inertial dynamometer testing.
Features and Benefits
– Reversing load test sequence at incremental torque loads.
– Continuous mode test sequence at user predefined torque and time values.
– Providing Rated Torque/Speed/Current/Temp. vs. Angle/Time for CW and CCW rotations.
Performance Test Mode
Supported tests: Torque, Speed, Current, , Input Power, Output Power, Efficiency, Direction of rotation, Parking position, Angle control.
Reversible Wiper Testing: Speed/Current/Angle vs. Torque curves, Rated torque/Speed/Current/Temperature vs. Angle/Time, for CW and CCW.
Additional Tests: Speed and torque spectrum, friction torque, friction spectrum, cogging torque level, and time angle.
The system includes different testing procedures and capabilities for testing DC Reversible Wiper Motors.
Reversing load test sequence, at incremented torque loads:
After connecting the controller and the MUT (Wiper Motor Under Test) to the test bench, the system will supply the predefined voltage to the MUT. The loading unit will start loading the MUT in small torque incremental steps, from 0 Nm up to motor stall or to user “Predefined maximum torque”. The duration of each torque step extends for one CW/ CCW wipe cycle.
The system test results provided are:
• Reversible wiper motor Speed/Current/Angle vs. Torque curves.
• Speed/Current/Torque/Temperature vs. Time curves for the complete testing procedure.
(*) Temperature measurements are given as optional.
Continuous mode test sequence:
For performance measurements in continuous mode, the user sets the predefined torque value and testing time. The system tests the motor at the user-predefined torque and time.
The system test results provided are: Rated torque/Speed/Current/Temperature vs. Angle/time, for CW and CCW. An example of a test report showing the results of a wiper motor at 3.25 Nm for 90 sec. is shown below in Figure 2. The system generates also an Excel report with all the source data. The negative torque values are for CCW direction.
Test Results Examples
Speed/Current/Torque vs. Time at 1 Nm Speed/Current/Torque/Temperature vs. Time at 3.25 Nm for 90 sec.
Angle vs. Time