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Stiffness measurement device for electric actuators

A measuring device and actuator technology, applied in the servo field, can solve problems such as the inability to measure the stiffness of electric actuators, and achieve the effect of high stiffness and avoiding deformation and displacement errors

Active Publication Date: 2020-01-10
BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the prior art cannot measure the stiffness of multiple electric actuators connected in parallel

Method used

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  • Stiffness measurement device for electric actuators
  • Stiffness measurement device for electric actuators
  • Stiffness measurement device for electric actuators

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Embodiment Construction

[0043] In order to make the technical solutions and advantages of the embodiments of the present application clearer, the exemplary embodiments of the present application are described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and Not all examples are exhaustive. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other if there is no conflict.

[0044] Such as figure 1 with figure 2 As shown, the embodiment of the present application provides a stiffness measuring device 1 for an electric actuator 13, which includes an upper platform 11, a lower platform 12, a plurality of parallel electric actuators 13, and a hydraulic loading servo system 14 and a detection unit (not shown in the figure); wherein: the upper platform 11 and the lower platform 12 are arranged opposite to each other in...

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Abstract

The embodiment of the application relates to the technical field of servo, and particularly, relates to a stiffness measurement device for electric actuators. An upper table body and a lower table body of the stiffness measurement device are arranged oppositely along a vertical direction; the upper table body is positioned at the top of the lower table body; a plurality of electric actuators are uniformly distributed along the circumferential direction of the lower table body; the top ends of the electric actuators are in spherical hinged connection with the upper table body, and the bottoms of the electric actuators are hinged with the lower table body; a hydraulic loading servo system comprises a hydraulic pump station, a hydraulic cylinder, a piston and a piston rod; the bottom end of the hydraulic cylinder is hinged to the circle center of the lower table body, and the top end of the piston rod extends out of the hydraulic cylinder and is hinged to the upper table body; the hydraulic pump station is used for providing hydraulic oil to the hydraulic cylinder; and a detection unit is used for detecting a displacement of the piston rod, a pressure in a rod cavity and a pressure ina rodless cavity. The stiffness measurement device can measure stiffness of a plurality of electric actuators connected in parallel.

Description

Technical field [0001] This application relates to the field of servo technology, and in particular, to a stiffness measurement 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 the displacement of the measured actuator is measured at the same time 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 the multiple electric actuators to the stiffness test bench for stiffness measurement. The parallel stiffness is not only related to the stiffness of each electric actuator, but also related to the extended position of the electric actuator. Therefore, the prior art cann...

Claims

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Application Information

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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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