Automatic detection method for non-weighing starting time of elevator

• Main Authors: WANG DONGBAO, KONG CANMING, QIN CHENGSONG, XU PEIPEI, XU SUSHENG, HUANG WEIGANG
• Format: Patent
• Language: Chinese; English
• Published: 08.11.2019
• Subjects: ELEVATORS; ESCALATORS OR MOVING WALKWAYS; HAULING; HOISTING; LIFTING; PERFORMING OPERATIONS; TRANSPORTING

The invention discloses an automatic detection method for a non-weighing starting time of an elevator. The method comprises the following steps: setting PI value gains of a speed ring as P0 and I0; recording a moment when an output command of sending a band-type brake contactor as T, a moment when an elevator system starts to slip backward (the band-type brake of the elevator is fully opened) as T1, a time period from the moment T0 to the moment T1 as a band-type brake release time which is initially measured and the initially measured band-type brake release time as t1-tset; then calculatingthe t1-tset by adopting a first order filtering link to obtain an accurate band-type brake release time t1; recording a moment when a torque compensated by a rotor of a traction machine exceeds an unbalanced weight compensating torque Tq0 for the first time as T2 and a time period from the moment T1 to the moment T2 as s torque compensating time t2; and calculating the non-weighing starting time t0 of the elevator system