Wireless measurement method of hinge torque on dynamic balance test bench

A hinge torque, wireless measurement technology, applied in the field of helicopter testing, can solve problems such as inaccurate data of hinge torque measurement system, and achieve the effect of shortening maintenance cycle, reducing maintenance cost, and strong anti-interference ability.

Inactive Publication Date: 2016-06-22
HARBIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Completely solve the problem of inaccurate data in the hinge moment measurement system caused by poor contact of the slip ring system, reduce equipment maintenance costs, shorten the maintenance cycle of the measurement system, and improve test efficiency

Method used

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  • Wireless measurement method of hinge torque on dynamic balance test bench

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Embodiment Construction

[0017] (1) System connection

[0018] The rotor head 2 is installed on the rotor blade dynamic balance test bench body 1, the helicopter blade 4 is installed on the rotor head 2, the force sensor 3 is installed on the rotor head 2, and the launching device 5 is installed at the center of the upper end of the rotor head 2. The force sensor 2 is connected to the transmitter 5 through a wire. The receiving device 6 is connected to the signal acquisition device 7 through a wire.

[0019] (2) System operation process

[0020] The first step is to turn on the power and turn on the wireless measurement system.

[0021] In the second step, the dynamic balance test bench is started, and the rotor head drives the helicopter blades to rotate to generate signals.

[0022] The third step is to analyze and record the signals received through the wireless device to complete the measurement.

[0023] The fourth step is to turn off the power.

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PUM

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Abstract

The invention belongs to the technical field of helicopter test, and particularly relates to a blade dynamic balance test bench hinge torque measurement method. According to the method, data measured by a force sensor is transmitted by a transmitting device in a wireless signal mode, and then a receiving device receives the data measured by the force sensor and transfers the data to data acquisition equipment for recording and storing. Namely, when a rotor head drives helicopter blades to rotate on a dynamic balance test bench, the force sensor generates a signal, and the signal is transmitted by the transmitting device above the rotor head in a wireless signal mode, received by the receiving device and transferred to signal acquisition equipment so as to complete data acquisition and recording.

Description

Technical field [0001] The invention belongs to the technical field of helicopter tests, and particularly relates to a method for measuring the hinge moment of a blade dynamic balance test bench. Background technique [0002] In the dynamic balance test of the blade, the hinge torque measurement of the blade is the key step of the dynamic balance test. The data is measured by force sensors and signal acquisition equipment installed on the rotor head of the test bench. The rotor head is rotating during the measurement, and the electrical signal of the sensor is transmitted to the data acquisition equipment in the control room through the slip ring system. The slip ring system is mainly composed of synthetic carbon brushes and a rotating shaft. On the rotating shaft are distributed annular conductive rings that are insulated from each other. The synthetic carbon brushes are fixed and pressed against these conductive rings with a certain pressure, and keep them rotating during meas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/00
Inventor 刘再兴杨世涛薛伟松张俊明李惠斌夏晓冬石悦
Owner HARBIN
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