Title:
TWO-DEGREE-OF-FREEDOM ROTATION CONTROL DEVICE AND APPLICATION SYSTEM THEREWITH
Document Type and Number:
WIPO Patent Application WO/2016/187837
Kind Code:
A1
Abstract:
Disclosed are a two-degree-of-freedom rotation control device and an application system, comprising a rotary body (1) provided with a rubbing spherical surface, wherein a load mounting platform is arranged at the top or in the interior of the rotary body (1); a fixed supporting structure which holds the rotary body (1) to make the rotary body (1) only have a rotary degree of freedom; driving motors (7) which are standing wave type piezoelectric ceramic motors, wherein the driving motors (7) are longitudinally distributed at the periphery of the rotary body (1), and driving ends of the driving motors are in direct contact with the rubbing spherical surface of the rotary body (1) so as to form a longitudinal rubbing transmission pair tangent to the rubbing spherical surface; and a control unit for controlling and regulating rotation of the rotary body (1) in two rotary degrees of freedom according to attitude data measured by a detection unit. The device has a simple structure, low costs and a stable performance, is easily miniaturized, has a wider dynamic response and smaller power consumption and can be widely applied to various types of dynamic stable platforms and automatic static orientation/levelling devices.
Inventors:
TANG LIZHENG (CN)
ZHANG DI (CN)
ZHANG DI (CN)
Application Number:
PCT/CN2015/079920
Publication Date:
December 01, 2016
Filing Date:
May 27, 2015
Export Citation:
Assignee:
BEIJING UNISTRONG SCIENCE & TECH CO LTD (CN)
International Classes:
G01C21/18; F16M11/06; G05D3/12
Foreign References:
| CN104850140A | 2015-08-19 | |||
| CN204595622U | 2015-08-26 | |||
| CN104440833A | 2015-03-25 | |||
| EP1870790A1 | 2007-12-26 | |||
| CN1546951A | 2004-11-17 | |||
| US6820531B1 | 2004-11-23 | |||
| CN103744436A | 2014-04-23 | |||
| GB807555A | 1959-01-14 |
Other References:
See also references of EP 3306270A4
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (Scitech PlaceNo.22, Jian Guo Men Wai Ave., Chao Yang District, Beijing 4, CN)
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