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Shaft tip supporting pendulum type servo accelerometer

A technology of servo acceleration and shaft tip, applied in the direction of measurement of acceleration, speed/acceleration/shock measurement, measurement device, etc., to achieve the effect of strong environmental resistance, high precision and small size

Pending Publication Date: 2022-04-01
AVIC SHAANXI HUAYAN AERO INSTR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In summary, domestic literature, papers and patents on servo pendulum accelerometers mainly focus on the sealing of the accelerometer structure, the analysis of reliability and life, the improvement of impact resistance, the simulation analysis of magnetic structure coupling, the analysis of safe use boundaries, Temperature compensation, time-domain dynamic modeling and compensation, error compensation model, servo loop analysis and other local aspects, research on the overall structure design and optimization of high-precision servo pendulum accelerometers is currently blank

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  • Shaft tip supporting pendulum type servo accelerometer
  • Shaft tip supporting pendulum type servo accelerometer

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Embodiment Construction

[0035] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention.

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below i...

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Abstract

The invention provides a shaft tip supporting pendulum type servo accelerometer, which is characterized in that a torquer of a closed-loop servo system is utilized to stabilize detection quality at a balance position, and the acceleration is indirectly measured by measuring the magnitude of current flowing through the torquer. Due to the adoption of a rigid supporting design mode that metal is matched with a conical jewel bearing, compared with a torsion bar open-loop liquid floating pendulum type accelerometer, the threshold value, the resolution ratio and the linearity precision are improved by nearly hundreds of times, and compared with a flexible fine rib supporting quartz accelerometer, the vibration resistance and the impact resistance are improved by nearly 10 times; the device has multiple technologies such as a high-sensitivity capacitive sensor, a single torquer structure and a feedback type high-precision integrated servo circuit; the device product has the characteristics of small size, light weight, low power consumption, large measurement range, vibration resistance, high precision, strong environment resistance and the like, has the advanced technical level in China, and is suitable for being widely applied to the fields of flight control systems, flight parameter systems, autopilot systems and the like.

Description

technical field [0001] The invention belongs to the field of liquid floating pendulum accelerometers, in particular to a shaft tip supported pendulum servo accelerometer. Background technique [0002] Servo pendulum accelerometer is a kind of force feedback pendulum accelerometer. It is a new generation of accelerometer developed on the basis of liquid floating pendulum accelerometer. It converts the input acceleration into the tiny angular displacement of its pendulum, and uses Torque balancer. Because of the force feedback structure, the servo pendulum accelerometer has the characteristics of high precision and strong anti-interference ability, so a large number of experts and scholars have studied the servo pendulum accelerometer. [0003] "Research on the Flexible Pendulum Accelerometer FHPA" mainly studies the influence of gem bearing type, flexible support type and magnetic bearing type on accelerometer performance. "Research on Liquid Floating Pendulum Force Balance...

Claims

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Application Information

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IPC IPC(8): G01P15/125
Inventor 戴成军刘杰杨文科吕晓伟陶志远马孝育王伟刚毛雪桐
Owner AVIC SHAANXI HUAYAN AERO INSTR
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