1. Optimization of Control Strategy for Fault Handling of Non-Road Mechanical Coupling in a Hybrid System.
- Subjects
HYBRID systems ,MATERIALS handling ,COUPLINGS (Gearing) ,COMMAND & control systems ,LOW voltage systems ,HIGH voltages - Abstract
In view of the fault phenomenon that the generator speed and engine speed are uncontrollable and the off-key cannot stop the generator and engine and disconnect the low-voltage electricity after the fracture of the non-road mechanical coupling of a hybrid system, according to the actual state of the engine and generator at the time of the fault, the control logic, judgement conditions and post-fault control commands of the system as well as the execution of the generator and engine and the ECU protection logic of the engine are sorted out, and then based on the sorted situation, the actual test data at the time of the fault is analyzed to confirm the reason for the uncontrollable generator speed and engine speed, as well as the inability to shut down and disconnect the low-voltage electricity. Based on the reason for the fault, the control logic of the system is optimized for the coupling fault, and the program is solidified and flashed into the vehicle controller. When the entire machine fails again, the generator speed and engine speed can be controlled, and they can be stopped and powered off normally, which realizes controllability of the system after fault. A set of control strategies after coupling fault is discussed and optimized, so that the generator and engine speeds can be controllable, and the entire vehicle can go down from high voltage and disconnect the low-voltage electricity normally. [ABSTRACT FROM AUTHOR]
- Published
- 2024