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This article takes the two-stage screw type solar array which has multi-deployment and lock function as a study object, and simplifies the joint hinge as rotation vice according to the transmission order of multi-deployment and lock joint hinge. Based on the kinematics characteristic analysis of solar array's deployment and the Kane dynamic equation, the dynamics analysis model of solar array's deployment...
In this paper, we report a closed-loop system for introducing static balance to a newly constructed biped called YICAL Leg 2. In the system, an attitude estimation system was developed to detect changes in the tilt and rotation along the hip axis of the biped. The attitude estimation system utilized an accelerometer and a rate gyroscope. A sensor fusion algorithm programmed in a digital signal processor...
A controller for a tunneling accelerometer has two tasks: to establish tunneling and to maintain tunneling during acceleration. This paper describes the design and implementation of a digital controller that accomplishes these tasks and provides the appropriate gain switching. The control law is based on a standard configuration of an observer and state feedback. A digital controller is implemented...
In this paper, squeeze film damping analysis of silicon piezoresistive accelerometer is reported. The accelerometer is a bulk micromachined device fabricated using CMOS compatible dual-dope TMAH. The device is realized in a three layer glass/silicon/glass bonded structure, with cavities of uniform depth (~30 mum) on both glasses to provide space for the damping medium. Air is used as damping medium,...
Magnetorheological(MR) fluid is regarded as a new smart material developed during these years. It can be transformed from the Newton fluid into the viscoplastic solid with finite yield shear stress within millisecond when a magnetic field is applied, and the transformation is controllable, continual and reversible. Therefore, it can be used in many fields. As a new technique, much work is needed to...
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