Actuating platform with functions of slight swing prevention and pointing regulation and actuating method

Abstract

The invention relates to an actuating platform with functions of slight swing prevention and pointing regulation and an actuating method. The platform comprises actuating rods, a lower base, an upper platform, a flexible hinge support, second-stage diamond-shaped displacement amplification mechanisms, piezoelectric piles and eddy current displacement sensors, wherein lower base is connected with the upper platform by the flexible hinge support, the lower ends of the actuating rods are fixed on the lower base, the actuating rods are arranged at diagonal lines in a paired way, the upper ends of the actuating rods are connected with the upper platform by a flexible hinge, piezoelectric drivers comprising the piezoelectric piles and the second-stage diamond-shaped displacement amplification mechanisms are connected in series onto the actuating rods, and the eddy current displacement sensors are arranged aside the actuating rods. A displacement signal of the upper platform is acquired by the eddy current displacement sensors, the actuating rods are driven to output the displacement along an axial direction by the piezoelectric drivers comprising the piezoelectric piles and the second-stage diamond-shaped displacement amplification mechanisms, the piezoelectric piles arranged at the diagonal lines in a paired way actuate coordinatively, the upper platform is driven to rotate along a diagonal direction, and high-accuracy regulation of a two-dimensional pointing angle and active control on slight swing of the pointing angle can be achieved.

Description

technical field [0001] The invention relates to the technical field of micro-swing inhibition and pointing adjustment functions, in particular to an actuating platform and an actuating method with micro-swing inhibition and pointing adjustment functions. Background technique [0002] With the rapid development of satellite communication and ground imaging technology, higher and higher requirements have been placed on the pointing accuracy and stability of satellites. The traditional point adjustment control adopts the magnetic motor drive control, and the point adjustment of the motor drive control generally consists of a motor, a motor controller and an adjustment object. The motor drive control for pointing adjustment has the following defects: First, the weight and volume of the motor drive equipment are large, and the power consumption is high; Second, the motor drive control pointing adjustment accuracy is not high; Third, for high-resolution imaging requirements, motor...

AI Technical Summary

Problems solved by technology

Pointing adjustment by motor drive control has the following defects: 1. The weight and volume of the motor drive equipment are large, and the power consumption is high; 2. The pointing adjustment accuracy of motor drive control is not high; The slight swing of the pointing angle cannot be suppressed during the process, and the stability of the pointing adjustment is low

When functions such as lightweight structure, miniaturization, low power consumption, high-precision pointing adjustment, and micro-vibration suppression of pointing angle are required, traditional motor drive control is difficult to meet the above conditions

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