In this paper, we develop a baby buggy with new functions which improve road safety. For the development, we decide the concept of policy based on questionnaire survey for users. The questionnaire ...survey was carried out around the shopping mall close to Minami-Senju station in Arakawa-ku, Tokyo-Metropolitan. The survey point has some characteristics e.g., there is a large number of the vehicle traffic; there is a road connected with train stations; the baby buggy come and go with bicycles on a walkway, and so on. As the result of survey, we can found expectations for improvements of “the single-hand operation” which include a function of single-hand open/fold and straightforward progress. If the single-hand operation is possible, the user is possible to hold children in another hand. In same time, it is expected that the improvement of usability make user available to attend on children for road safety. Then, we developed new functions based on a buggy in the market. Those are the function of single-hand folding, the function of improved straightforward progress and the function of new self-standing. The first, we install a kick-bar. By this development, the single-hand folding is remarkably improved. Also, the kick-bar work as the leg of the self-standing when the buggy is folded. The second, we develop a function of handle-revolution. By this function, straightforward progress will be improved due to tentative combination of handles.
In the next generation of baby carriages, better comfort for both the baby as well as the parent is required, in addition to safety concerns. To develop a comfortable baby carriage, fundamental data ...are required about the types of vibrations babies prefer and find pleasant. In order to obtain such data, it is necessary to develop a shaking table for baby carriages having nonlinear characteristics, and develop a control system in which the shaking table follows a desired input characterized as a random wave. In this study, a single axis shaking table for a baby carriage is studied. The table under the right front wheel of the baby carriage is shaken according to a desired waveform. The proposed control system is a proportional controller with an outer feedback loop based on a discrete-time sliding mode controller, i.e., an input waveform shaping filter. The performance of the controller is evaluated using a numerical simulation. The results show that although the shaking table displacement could follow the desired waveform by using only the proportional controller, the robustness of the response to disturbance was weak, and also that the robustness could be improved with the addition of the proposed input waveform shaping filter. The effectiveness is demonstrated using a control experiment. The results of this experiment show that the mean square error of the table displacement when using proportional controller along with the input waveform shaping filter was about 75% compared with the error when using only the proportional control.
Die himmelblaue Zierde für einen Kinderwagen in den 50er Jahren des 20. Jahrhunderts entstand in Zeitz. Hier wurden damals nicht nur Kinderwagen hergestellt, sondern auch Kinderwagenausstattungen. ...(Museum Schloss Moritzburg Zeitz)
The sky blue decoration for a stroller in the 50s of the 20th century was built in Zeitz. Not only strollers were produced here, but also strollers. (Museum Schloss Moritzburg Zeitz)
Sankt Veit an der Glan: Kindergarten der Kinderfreunde: Ein Mädchen bettet seine Puppe in einen Puppenkinderwagen. Foto. Aufnahme um 1930.
Sankt Veit an der Glan: Kindergarten der Kinderfreunde: A ...girl prays his doll into a doll cart. Photo. Shot around 1930.
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