Gradient Descent Control of Permanent Magnet Synchromotor for Legging Truck Based on State Transformation
Logging truck plays a crucial role in petroleum exploration,and the permanent magnet synchromo-tor(PMSM)is a key component in controlling logging device.In the paper,a robust control strategy for PMSM in logging truck was proposed,which,based on state transformation technology,by means of adopting tangent func-tion transformation,effectively limits the output of PMSM within the required range.Moreover,based on this transformation,a new PMSM dynamic model was built,and the fuzzy set theory was used to deal with parameter uncertainty in the system.In order to further improve the system performance,a mode of solving Riccati equation was used to design a controller,and accurate position control of PMSM was successfully realized.In the entire con-trol strategy,a cost function was introduced,and a regularization term was added.The cost function was opti-mized,and the gradient descent method was used to adjust control parameters to improve system performance indi-cators and reduce control costs.The test results show that compared with the most commonly used control strate-gies,this research method achieves high performance,stability and reliability while reducing control costs,and can be applied to electric drive devices.
logging truckpermanent magnet synchromotorrobust controlcost functionfuzzy set theoryRiccati equation
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