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          Current Location: Home >> News >> Technical knowledge

          Three-dimensional turntable

          Date:2017-05-11 Author: Click:

          International development

          In the international community, because the inertial guidance technology by the world's technologically advanced countries and developing countries generally attention, so the United States, Russia, Britain, France, Switzerland, China, India and other countries have invested a lot of money and manpower in the development of turntables. Among them, the United States turntable research has been at the world's leading level, followed by Germany, Britain, France and Switzerland and other countries developed a turntable also has a certain representation, performance and quality second only to the United States.

          The first turntable in the world was developed in 1945 by the Massachusetts Institute of Technology's Instrument Laboratory (MITInstrumentation lab), as a type A turntable, with ordinary ball bearings, driven by AC torque motor, angular position measurement components using ball With the micro-switch, due to the use of components is relatively low accuracy, coupled with no experience can learn from the turntable there are many shortcomings, accuracy can only reach the angle classification, in fact, not put into use. Subsequently, the United States Ou Si Yi a company's Fick (Fecker) system branch has developed a T-800 servo turntable, which marks the US turntable design has reached a new level. In the 1960s, important parts of the turntable, such as bearings, drive motors and monitoring elements, were systematically improved. The successful development of air bearings and hydraulic bearings for turntable, high speed ratio, high precision hydraulic motors and high resolution Of the detection components, the technical level of the turntable to a new level. At the same time, some companies specializing in the production of turntable, such as the United States CGC (Contraves-Goerz Corporation has been reorganized) company, Carco (Carco Electronics, now incorporated into the European Acutronic company), Germany MBB company.


          Domestic development

          Although China's turntable development started late than the developed countries, but these years have also made some achievements, especially in recent years, turntable development has been a great development. At present, there are many domestic research institutions and universities engaged in turntable research and development, such as Harbin Institute of Technology, CATIC 303, 6354 in the ship, Nanjing University of Aeronautics and Astronautics. China in the 20th century, 60 years independently developed and manufactured the first hydraulic flight simulation turntable for China's early aircraft control and guidance system has made tremendous contributions to the development. In the 1980s, China introduced the digital control into the turntable control, realized the complicated control law with the software, the parameter adjustment was also convenient to the analog controller, and brought our research and development into a new era. In 1990, CATIC 303 successfully developed the SGT 1-type three-axis strapdown inertial navigation test turntable, which is China's first computer-controlled high-precision three-axis inertial test bench. Since the 1990s, the development of the turntable has entered a digital and analog requirements are getting higher and higher, which on the turntable design and tuning put forward higher requirements.

          China has also developed a number of different forms of different uses of precision servo turntable, from the domestic product point of view in the same structural stiffness under the premise of domestic products to do heavier, smaller load, which to miniaturization, mobility is very difficult. As foreign imports of related products is always in a state of strict control. So only based on their own development. And their own development need to solve the problem is how to make the structure of light and high stiffness, high precision.

          Related tags:Turntable