A method for turbine slip torque detection and nondiscriminatory adaptation

Abstract

The present invention relates to the technical field of turbine slip detection, and specifically to a method for turbine slip torque detection and non-discriminatory adaptation, including the following steps: Step 1, the production line equipment detects the slip torque T of the turbine s , if Ts < T1 or T s > T2, then the product is a non-conforming part. If T1 ≤ T s ≤ T2, then proceed to Step 2; Step 2, the production line equipment stores the T s value and writes the T s value into the ECU; Step 3, obtain the motor rotor angle signal through the sensor; Step 4, the ECU calculates the turbine torque T w ; Step 5, the ECU calls the T s value and compares the magnitude of the turbine torque T w with the T s value. Compared with the prior art, the present invention can effectively monitor the turbine slip torque, and by writing the slip torque detected by the production line equipment into the ECU, it can achieve differential detection and adaptation for all products; it can effectively avoid a large number of failures of the output rotation angle and speed, and improve the availability, accuracy and stability of the steering system as much as possible.

Claims

1. A method for detecting and seamlessly adapting turbine slippage torque, characterized in that: It includes the following steps: Step 1, the production line equipment detects the slip torque T of the turbine s , if Ts < T1 or T s > T2, then the product is a non-conforming part. If T1 ≤ T s ≤ T2, then proceed to Step 2; Step 2, the production line equipment stores the T s value and writes the T s value into the ECU; Step 3, obtain the motor rotor angle signal through the sensor; Step 4, the ECU calculates the turbine torque T w =(ω × d(n) / dt + T m × φ) × η, the turbine rotation angle θ = α / η, ω is the moment of inertia of the motor rotor and its attached parts, n is the motor speed, T m is the motor torque, φ is the transmission efficiency, η is the transmission ratio of the turbine and worm, and α is the motor rotor angle; Step 5, the ECU calls the T s value and compares the magnitudes of the turbine torque T w and the T s value. If T w ≥ T s , then it is determined that the turbine slips, reports the corresponding fault, and sets the turbine rotation angle θ to invalid. If T w < T s , then it is determined that the system is working properly.

2. The method for detecting and seamlessly adapting turbine slippage torque according to claim 1, characterized in that: T1 is the lower limit of the turbine slippage torque design, and T2 is the upper limit of the turbine slippage torque design.

3. The method for detecting and seamlessly adapting turbine slippage torque according to claim 1, characterized in that: When the system is working normally, the turbine rotation angle θ is synchronized with the motor rotor angle α.

4. The method for detecting and seamlessly adapting turbine slippage torque according to claim 1, characterized in that: When the turbine slips, the turbine rotation angle θ and the motor rotor angle α become misaligned.

5. The method for detecting and seamlessly adapting turbine slippage torque according to claim 1, characterized in that: When the turbine slips, the turbine speed γ is also set to invalid.

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