日本三菱制钢公司和户田建筑公司与东京大学生产技术研究所合作开发出节能型建筑减震装置(APWD)。该装置可使消极减震自动转换成积极减震。其特点是:在使用直线运动结构的消极型装置中,安装了油压控制系统,使其具有了积极型减震装置的功能。因此,在油压控制系统范围内,该装置作为积极型进行工作;超越能力,油压装置即会打开,作为消极型进行工作。这种装置对各种各样的外力都能有效地发挥出减震效果。这种技术也适于安 Japan’s Mitsubishi Steel Works and Toda Construction Co., Ltd. cooperated with the University of Tokyo’s Institute of Production Technology to develop an energy-saving building shock absorber (APWD). The device can automatically convert negative shock absorption into positive shock absorption. It is characterized by: In the negative type device using a linear motion structure, an oil pressure control system is installed so that it has the function of a positive-type damping device. Therefore, within the scope of the hydraulic control system, the device will work as an active type; beyond the capability, the hydraulic device will open and work as a passive type. This device can effectively exert a shock absorbing effect on various external forces. This technique is also suitable for safety