Joule Balance

The main research direction of this team is the joule balance quantum mass standard. Team has developed a set of kilogram unit relization devices traceable to the Planck constant based on joule balance independently proposed by China, in order to deal with the redefinition of the SI, i.e. the redefinition of kilogram using the Planck constant.

The research of the joule balance test device involves multiple disciplines such as electromagnetism, mechanics, length, mechanical design and automatic control, as it is a complex system achieving optical and electromechanical integration. The joule balance team carries out activities jointly with  universities such as Harbin Institute of Technology and Tsinghua University, and has cultivated a group of scientific research talents through projects researching.