Chih-Jer Lin

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The piezo-actuated stages are composed of the piezo-electric actuator and the positioning mechanism. The positioning accuracy of the piezo-actuated stage is limited due to hysteretic nonlinearity of the PEA and friction behaviour of the positioning mechanism. To compensate this nonlinearity of piezoelectric actuator, a PI feedback control associated with(More)
Due to global energy crisis and severe environmental pollution, the photovoltaic (PV) system has become one of the most important renewable energy sources. Many previous studies on solar charger integrated system only focus on load charge control or switching Maximum Power Point Tracking (MPPT) and charge control modes. This study used two-stage system,(More)
Rapid pedestrian detection, distance cruise control, lane departure warning system, and reverse image system are widely used in automobile system, but the real-time detecting driver's drowsiness using the embedded system was not developed in the past. Recently, the biomedical signal processing have been using to solve biomechanical sciences problem, such as(More)
In this study, we use two one-port SAW resonators (SAWR) oriented at 45 degree to the shaft to measure the strain of the shaft. When the shaft is applied by torque, the frequency of SAWRs with maximum received signal strength indication (RSSI) will be influenced by the applied torque. Therefore, we measure the shift of the central frequency for the SAWRs(More)
This paper presents the mechanical design, the locomotion and the associated dynamic model of a new robotic wheelchair on climbing winding stairs. The prototype stair-climbing robotic wheelchair is constructed comprising a pair of rotational multi-limbed structures pivotally mounted on opposite sides of a support base so that the robotic wheelchair can(More)
A motion planning problem for a planar robot on a path with singularity is studied in this paper. The motion planning problem is solved by a proposed hybrid motion planning method to guarantee the robustness of singularity and to reduce the computing load of the optimal-perturbation problem. To verify the proposed method, a tracking path with singularity is(More)
Recently, electric power steering systems (EPS) are developed to compensate the transmitted steering forces according to the applied torque. To measure the torque via wireless sensing, the purpose of this study is to investigate a measurement system with two SAW sensors via wireless RF signals. In this implementation, the SAW sensors are attached on a(More)