A Stiffness Measuring Device of an Electric Actuator

A technology of measuring devices and actuators, which is applied in the servo field, can solve the problems of low rigidity accuracy, achieve high rigidity, and avoid product deformation and displacement errors

Active Publication Date: 2021-07-13
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing technology is less accurate in measuring the stiffness of multiple electric actuators connected in parallel

Method used

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  • A Stiffness Measuring Device of an Electric Actuator
  • A Stiffness Measuring Device of an Electric Actuator
  • A Stiffness Measuring Device of an Electric Actuator

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Embodiment Construction

[0043] In order to make the technical solutions and advantages in the embodiments of the present application clearer, the exemplary embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only part of the embodiments of the present application, and Not an exhaustive list of all embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0044] Such as figure 1 with figure 2 As shown, the embodiment of the present application provides a stiffness measurement device 1 of an electric actuator 13, the stiffness measurement device 1 includes an upper platform body 11, a lower platform body 12, a plurality of parallel electric actuators 13, a hydraulic loading servo system 14 and detection unit (not shown in the figure); Wherein: upper platform body ...

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Abstract

The embodiments of the present application relate to the field of servo technology, and in particular, to a device for measuring stiffness of an electric actuator. The upper stage body and the lower stage body of the stiffness measuring device are arranged opposite to each other in the vertical direction, and the upper stage body is located on the top of the lower stage body; a plurality of electric actuators are evenly distributed along the circumferential direction of the lower stage body, and the top of the electric actuator and the upper stage body are arranged The ball joint is connected, and the bottom end is hinged with the lower body; the hydraulic loading servo system includes a hydraulic pump station, a hydraulic cylinder, a piston and a piston rod; the bottom end of the hydraulic cylinder is hinged to the center of the lower body, and the top of the piston rod extends hydraulic pressure. The cylinder is hinged to the upper stage body; the hydraulic pump station is used to supply hydraulic oil to the hydraulic cylinder; the detection unit is used to detect the displacement of the piston rod, the pressure in the rod chamber and the pressure in the rodless chamber. The stiffness measuring device can measure the stiffness of a plurality of parallel electric actuators.

Description

technical field [0001] The present application relates to the field of servo technology, and in particular, relates to a stiffness measuring device of an electric actuator. Background technique [0002] In the prior art, there are relatively mature measurement methods for the stiffness measurement of a single electric actuator. Generally, a hydraulic servo cylinder or an electric servo cylinder connected in series with the measured electric actuator is used to apply a certain load, and at the same time measure the displacement of the measured actuator to calculate the stiffness. [0003] However, for the stiffness of multiple electric actuators connected in parallel, such as a parallel robot, it is impossible to transport multiple electric actuators to the stiffness test bench for stiffness measurement. Parallel stiffness is not only related to the stiffness of each electric actuator, but also to the extended position of the electric actuator. The prior art ("Generalized L...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M5/00
CPCG01M5/005
Inventor 焦玮玮王效亮刘山姜玉峰丁弘毅靳广在姚谦周巍峰郑华义郑宣
Owner BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS
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