Introduction to the Test Bench
The recirculating ball steering gear test bench developed by TMC Solutions Automotive Testing Factory is suitable for performance and durability testing of recirculating ball steering gears of various models.
Recently, TMC Solutions Automotive Testing Factory proposed a new test solution for electric recirculating ball steering gear and electro-hydraulic recirculating ball steering gear.
Main Test Items
1) Functional test
2) Efficiency test
3) Back to positive test
4) Force characteristic test
5) Static current test
6) Active return to positive test
7) Sensor signal characteristic test
8) Input torque/current characteristic test, etc.
Technical Features
Innovative loading structure: the loading state can be infinitely close to the real vehicle state, thereby ensuring the accuracy and reliability of the test results;
Integrating the company's high-performance electro-hydraulic servo controller: The static pressure support hydraulic motor independently developed by TMC Solutions Automotive Testing Factory is used for loading, which can realize high-frequency road spectrum loading and stepless adjustment of the load;
Two loading forms of constant torque and constant force can be realized: loading accuracy ≤ 0.5%, and the maximum loading torque can reach 12000Nm;
Wide coverage of specimens and high compatibility: performance and durability tests of four types of recirculating ball steering gears of mechanical, power cycle, electro-hydraulic and EPS can be performed;
Accurate measurement data and high repeatability: After years of technical precipitation and market experience accumulation, the iterative test solution has been continuously optimized, resulting in more accurate measurement data, high repeatability and stable performance;
Test Curve
The overall structure is exquisite and beautiful: the distributed structure is adopted, the drive system and the loading system are arranged on the main body of the worktable, and the outer aluminum alloy frame is protected.
The main part of the test bench
Technical Specifications
Drive System | |
Input shaft drive torque | performance driven 0~±200Nm/±20Nm |
input shaft speed | 0~120r/min |
input angle | infinite |
Swing Loading System | |
Maximum load torque at the output | 0~±12000Nm |
Output loading speed | 0~10rpm |
output angle | 0~120° |
Power Pump Station and Oil Temperature Control System | |
System flow | 0~30L/min |
Inlet pressure 1 | 0~25Mpa |
Inlet pressure 2 (Free gap test) | 0~2.5Mpa |
working oil temperature | room temperature~120℃, water cooling |
Specimen Power Supply | |
ECU power supply | DC0~48V、150A (Wide adjustable with digital display) |
detection precision | 0.005 |
Number of current detection channels | 2 channels |
Extended Application
Hybrid simulation-in-the-loop test system (HIL): It can test and evaluate the functional logic, fault diagnosis, and chassis performance of the electronically controlled chassis system, and then guide the development of the electronically controlled chassis system to improve safety and development efficiency.
system structure
Built-in high-precision vehicle dynamics model
Extensive database of vehicle characteristics