Dynamometric electric servo loading device

Abstract

The invention discloses a dynamometric electric servo loading device which comprises: a mixed linear stepping motor, a motor pedestal, motor support columns, a nut, a pressure sensor, housing, a connection stud, an actuator rod and an elastic contact. The actuator rod, which is provided with a feather key and a non-standard pressure spring, is inserted into the housing. An upper end of the actuator rod is contacted with a median diameter round hole of the housing. A rod portion of the actuator rod is contacted with a minor diameter round hole at a lower end of the housing. The elastic contact is installed in a blind hole at the lower end of the actuator rod and is fixed by a clamping screw. The lower end of the pressure sensor is connected with the upper end of the actuator rod through the connection stud. An upper end surface of the pressure sensor is contacted with a lower end surface of the nut. A boss of the nut is assembled fitly with a large diameter round hole of the housing. Screwed holes at four corners of the upper end surface of the housing are connected with lower ends of the motor support columns. Upper ends of the motor support columns are fixedly connected with the motor pedestal. The mixed linear stepping motor is fixed on the motor pedestal and a driving screw of a mixed linear stepping motor output terminal is traversed the motor pedestal and is connected with the nut.

Description

technical field [0001] The present invention relates to an electric servo loading device, more specifically, the present invention relates to a comprehensive test of automobile touch screen and switch, especially suitable for real-time control requirements of displacement, speed, loading position and loading force during the experiment process Measurable force electric servo loading device. Background technique [0002] The input devices of today's electronic systems are basically keyboards and touch screens. Traditional keyboards are widely used in middle and low-end electronic devices because of their economy and convenience. The touch screen has become the input device of many high-end electronic equipment due to its many advantages such as durability, fast response, space saving, and easy man-machine communication. Especially in the automotive industry, they have become the main channel for intelligent vehicles to communicate with people. [0003] The key performance ...

AI Technical Summary

Problems solved by technology

Since the stroke and loading force of the cylinder cannot be controlled, the entire loading device is controlled in an open loop, without accurate feedback, real-time control cannot be performed, and the accuracy of the experiment is extremely poor.

Some loading devices directly use small linear motors. Although the control problem is solved and the accuracy is improved, the practicability is poor. The motor is easily damaged by the interference of the reaction force for a long time, and the high-intensity fatigue test cannot be completed.

Images