Control of compensation in linear induction motors

Adaptive Control Approach for Speed Motion-Sensorless of Linear Induction Motor Unknown Resistance and Payload

“…By Lemma 5, we conclude that the system ( 10) is exponentially stable provided ( ) W t is PE. However, from (9) the asymptotic convergence property of X and I % may no longer hold due to the forcing term added to the homogeneous system (10). To cope with this, we first note that the forcing term in (9) with respect to the homogeneous part in (10) will be ultimately in the order of the magnitude of ( ) B t under the premises of Lemma 3.4, since ( , ) q d i i % % will then tend to zero.…”

“…However, from (9) the asymptotic convergence property of X and I % may no longer hold due to the forcing term added to the homogeneous system (10). To cope with this, we first note that the forcing term in (9) with respect to the homogeneous part in (10) will be ultimately in the order of the magnitude of ( ) B t under the premises of Lemma 3.4, since ( , ) q d i i % % will then tend to zero. Thus, in our observer design, we gradually decrease the values of the control signals 5 6 ( , ) u u to zero as I % tends to zero.…”

“…A related method to deal with the problem is that an external force corresponding to the end effect is introduced into the RIM model to provide a more accurate modeling of an LIM under consideration of end effect as shown in [8]. In another work [9], extra compensating-winding was proposed to compensate such problem. Although the end effect is an important issue of the LIM control, but there are still many works in the literature without considering it, such as [10][11][12][13][14][15][16].…”

Adaptive Approach to Motion Controller of Linear Induction Motor with Friction Compensation

“…A related method to deal with the problem is that an external force corresponding to the end effect is introduced into the RIM model to provide a more accurate modeling of an LIM under consideration of the end effect as shown in [9]. In another work [10], [21], [22], extra compensating-winding was proposed to alleviate such problem.…”

Adaptive backstepping speed/position control with friction compensation for linear induction motor

“…A d a t e d method to deal with the problem is that an external force corresponding to the end effect is introduced into the RIM model to provide a more accurate modeling of an LIM under consideration of end effect as shown in [ 81. In another work [9], extra compensating-winding was proposed to compensate such problem.…”