Elevator starting force compensation method, equipment and elevator

Abstract

The invention discloses a elevator starting force compensation method. The method comprises the following steps that a curve equation K=f(V) of output voltage V of a weighing sensor and a weighing sensor parameter K is learned, a current weighing sensor parameter K0 is calculated by combining current output voltage V0, and force F<load>=V0*K0=V0*f(V0) required for compensating current load is obtained; the weight difference M1 between a lift car and a counterweight is learned; and current starting compensation of force F of an elevator is calculated. Compared with the prior art, according to the elevator starting force compensation method, the curve equation of the weighing sensor parameter K and the voltage output V of the weighing sensor is fitted in a multi-point learning mode, so thatthe influence of nonlinearity of the weighing sensor on starting comfort is compensated. In addition, the weight difference of steel wire ropes on different floors can be automatically learned, a motor is controlled to automatically compensate the weight difference of the steel wire ropes according to different floors during starting, and the starting comfort is further improved.

Description

technical field [0001] The invention belongs to the technical field of elevator control, and in particular relates to an elevator starting force compensation method, equipment and an elevator. Background technique [0002] For vertical lift elevators including motor, car, counterweight, wire rope and brake, during daily operation, the weight of the car side and the counterweight side are mostly in an unbalanced state, so when the elevator starts and the brake is opened When the car is unbalanced, the car will slip or overshoot due to the imbalance, which will seriously affect the comfort of passengers. Therefore, in order to ensure the comfort of starting, before the brake is opened, the starting compensation torque must be applied to the motor, so that when the brake is opened, the force on the car is balanced without slipping and overshooting, and a smooth start is realized. [0003] At present, many elevators use load cells to calculate the starting compensation torque. ...

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Problems solved by technology

[0004] However, in actual use, the output voltage of the load cell has a deviation, which is not linear with the load, which leads to deviations in the calculation results of the starting compensation torque

[0005] In addition, the starting compensation torque is not only related to the load. If you only pay attention to the load and ignore other factors, it will also lead to deviations in the calculation results of the starting compensation torque, thereby reducing the starting comfort.

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