Method and system for measuring mechanical transmission torque and limit position of damper of air-conditioning box

Abstract

The invention provides a method for measuring the mechanical transmission torque and limit position of the damper of the air-conditioning box, including: S1, measuring the operating parameters of the servo motor detached from the air-conditioning box to be measured, and generating a reference characteristic curve; obtaining the servo motor according to the reference characteristic curve The corresponding relationship between the operating current and the output torque; S2. Collect the feedback voltage value and operating current value of the servo motor connected to the air-conditioning box under test; when the damper of the air-conditioning box reaches the specified position, control The servo motor is powered off and stops running; S3. Generate a curve chart based on the collected feedback voltage value and operating current value of the servo motor connected to the DUT; S4. Set the qualification criteria for the air-conditioning box, and according to the set air-conditioning box Judging whether the air conditioner body damper mechanical transmission torque and limit position meet the requirements based on the conditions for judging whether the body is qualified and the measured feedback voltage value and operating current value.

Description

technical field [0001] The invention relates to the technical field of mechatronics electronic measurement, in particular to a method and system for measuring the mechanical transmission of an air-conditioning box damper and the torque at a limit position. Background technique [0002] The automotive air conditioning system is a device that cools, heats, ventilates and purifies the air in the cabin. The car air conditioner box is composed of air duct, damper baffle, transmission mechanism for driving the damper baffle and servo motor, etc. It is mainly used to realize the air conditioning conversion function in various working states. [0003] The servo motor is mainly composed of plastic shell, micro motor, plastic gear set and position sensor (carbon film potentiometer) and other components. The servo motor drives the plastic gear set and the position sensor through the power rotation of the micro motor, and the position sensor feeds back the voltage signal It is an angle...

AI Technical Summary

Problems solved by technology

[0004] Limited by the structure of the car body, the air-conditioning box is usually an irregular and special-shaped space structure, and the mechanism space is relatively complicated, and the operation and closing status of the air door baffle cannot be visually observed

Therefore, due to the influence of the structural space of the air-conditioning box, traditional torque sensors and torque meters cannot be used to accurately, completely and truly measure the torque curve of the transmission mechanism online.

Images