Vehicle door endurance testbedrandom test method based on servo electric cylinder

Abstract

The inventiondiscloses a vehicle door endurance testbedrandom test method based on a servo electric cylinder. The method comprises three steps: a speed given signal x is produced and output, a displacement given signal y is output, and switching between speed control and position control is carried out. For a vehicle door fatigue test, in order to simulate the actual condition of manually openingand closing a vehicle door to the greatest degree in a test process, the speed given signal x adopts random speed, the displacement given signal y is obtained by integration of the speed given signalx, the servo electric cylinder is taken as an actuator to drive the vehicle door to perform opening and closing motion, the opening target position is set manually, each vehicle door endurance test iscompleted by adopting random given speed, andtherefore, a test result is enabled to be more convincing.

Description

Technical field: [0001] The invention relates to a car door fatigue test, in particular to a random test method for a car door durability test bed based on a servo electric cylinder. Background technique: [0002] The door durability test bench is a test device used to test the safety, reliability, durability and mechanical structure of the door, which provides a guarantee for the safety of the passengers and drivers in the car. Most of the current door durability test benches use cylinders as actuators to drive the doors at the same speed to complete a certain number of opening and closing operations, and record the test conditions to obtain the results. However, in reality, because different people open the door at different speeds, especially when the door is opened at a high speed, it will have a greater impact on the service life of the door, so a certain number of door durability tests are carried out at the same speed The test results obtained are not convincing. The...

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Problems solved by technology

However, in reality, because different people open the door at different speeds, especially when the door is opened at a high speed, it will have a greater impact on the service life of the door, so a certain number of door durability tests are carried out at the same speed The test results obtained are not convincing. The survey statistics show that the doors of sm

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