Inertia measuring system and method

Abstract

The invention relates to an inertia measuring system and method. The inertia measuring method comprises the steps that the sliding accelerated speed a of a car and the static torque M of a traction machine are measured, and elevator inertia I is obtained through the sliding accelerated speed of the car and the static torque of the traction machine; under the state that a brake is released and the traction machine does not exert torque, the car is made to freely fall in a sliding state, and the sliding accelerated speed of the car is obtained; and under the state that the brake is released and the car is static, the static torque of the traction machine is obtained. As for the elevator inertia obtained through the calculation, the influence of structures and parts relevant to an elevator in actual operation is fully considered, the obtained elevator inertia is precise and reliable, the basis can be provided for optimization of elevator speed control parameters, and the on-site mechanical arrangement condition of the elevator can also be checked.

Description

technical field [0001] The invention belongs to the field of elevators and hoists, and in particular relates to an inertia measurement system and method. Background technique [0002] The control and operation of the elevator need to consider the elevator inertia. The traditional elevator inertia is obtained by calculating the nominal value of the mass of each component of the elevator. However, the number of elevator mechanical parts is hundreds or thousands, which leads to complex calculation of mechanical inertia and low accuracy. In addition, there is a tolerance between the nominal mass value of the components and the real mass of the components, so the calculation result has a large error and cannot be accurately calculated. A good guide to the optimization of the elevator speed control parameters cannot be used to test the field configuration of the elevator. In addition, because the elevator user will re-modify the decoration in some cases, it is more difficult to a...

AI Technical Summary

Problems solved by technology

However, the number of elevator mechanical parts is hundreds or thousands, which leads to complex calculation of mechanical inertia and low accuracy. In addition, there is a tolerance between the nominal mass value of the components and the real mass of the components, so the calculation result has a large error and cannot be accurately calculated. It is a good guide for the optimization of elevator speed control parameters, but it cannot be used to test the elevator's on-site configuration problems

In addition, because the elevator user will re-modify the decoration in some cases, it is more difficult to accurately obtain the mechanical inertia of the elevator

Therefore, it is particularly difficult to accurately measure the inertia of the elevator on site

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