Patent ID: 11958719
Assignee: DONGNAN ELEVATOR CO., LTD.
Field: Handling (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 2:
3. The action state detection method for the elevator brake according to claim 2, wherein the degrees of similarity of the any two of the brake linings are determined according to the braking duration and the difference sequence of the A-side brake lining and the B-side brake lining:

G(p,q)AA=abs(ETp−ETq)*DTW(SpA,SqA)

G(p,q)AB=abs(ETp−ETq)*DTW(SpA,SqB)

G(p,q)BA=abs(ETp−ETq)*DTW(SpB,SqA)

G(p,q)BB=abs(ETp−ETq)*DTW(SpB,SqB)

wherein ETp is the braking time of brake p; ETq is the braking time of brake q; SpA is the stress sequence of the A-side brake lining of the brake p; SqA is the stress sequence of the A-side brake lining of the brake q; SqB is the stress sequence of the B-side brake lining of the brake q; SpB is the stress sequence of the B-side brake lining of the brake p; DTW( ) is a dynamic time warping function; and abs( ) is an absolute value function.