Fine Torsion Torque Control for Geared Motors by a State-Reference-Dependent Variable-Order Friction Observer

2020 ◽  
Author(s):  
Juan Padron ◽  
Yusuke Kawai ◽  
Yuki Yokokura ◽  
Kiyoshi Ohishi ◽  
Toshimasa Miyazaki
Keyword(s):  
Torque Control ◽  
Variable Order ◽  
Friction Observer ◽  
State Reference

scholarly journals Efficient State Reference Generation for Torque Control in Externally Excited Synchronous Machines

2015 ◽  
Vol 137 (5) ◽  
Author(s):  
Sabin-Constantin Carpiuc ◽  
Mircea Lazar
Keyword(s):  
Optimization Problem ◽  
Hybrid Electric Vehicles ◽  
The State ◽  
Torque Control ◽  
Synchronous Machines ◽  
Hardware In The Loop ◽  
Convex Optimization Problem ◽  
State Reference ◽  
Generation Problem ◽  
Generation Procedure

A relevant challenge in hybrid electric vehicles (HEVs) and full EVs is the torque control of externally excited synchronous machines (EESMs). Effective torque control requires an efficient solution to the state reference generation problem, which is a nonlinear nonconvex optimization problem. The goal of this paper is to develop a state reference generation algorithm based on the gridding of the state and output spaces. First, an approximation defined over a cubic partition of the torque function with a piecewise affine (PWA) function is made. As a result, the state reference generation problem is reduced in each cube to solving a convex optimization problem. Moreover, this approach provides guarantees about the error bound introduced by the state reference generation procedure for the full operational state-space. To illustrate the effectiveness and robustness of the proposed algorithm, several real-time results obtained on an industrial hardware-in-the-loop (HIL) test-bench are presented. The obtained results show significant improvement compared with existing state-of-the-art reference generation methods.

MODELING SYSTEMS DIRECT TORQUE CONTROL USING А THREE-PHASE MATHEMATICAL MODEL

2016 ◽  
Vol 22 (98) ◽  
pp. 56-61
Author(s):  
Vladislav A. Kosenko ◽  
◽  
Valeriy O. Kvashnin ◽  
Keyword(s):  
Mathematical Model ◽  
Direct Torque Control ◽  
Torque Control ◽  
Modeling Systems ◽  
Three Phase
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