This paper summarizes the mechanical and control design concepts of an inverted or unstable pendulum where stabilization is achieved by a moment exchange generated by a controlled symmetric rotation of a rotational inertia attached to the pendulum. The proposed design of the pendulum has a fixed bottom rotation or point of support as opposed to the usual vertically or horizontally moving point ...

The paper studies testing based on input/output transition systems, also known as input/output automata. It is assumed that a tester can never prevent an implementation under test (IUT) from producing outputs, while the IUT does not block inputs from the tester, either. Thus, input from the tester and output from the IUT may occur simultaneously and should be queued in finite buffers between th...

Reminiscing is a positive pastime for people with dementia but little is known about selecting materials to prompt reminiscing, particularly whether personal items are more useful than generic ones. This paper reports two small studies, the first using personal stimuli (family photographs) and the second generic photographs of annual events to examine their relative effectiveness as reminiscenc...

this paper proposes an approach for the minimum time swing upof a rotary inverted pendulum. our rotary inverted pendulum is supported bya pivot arm. the pivot arm rotates in a horizontal plane by means of a servomotor. the opposite end of the arm is instrumented with a joint whose axisis along the radial direction of the motor. a pendulum is suspended at thejoint. the task is to design a contro...

We investigate several regions of parameter space of a driven pendulum system over which specific phenomena occur. The pivot on which the pendulum hangs is driven in the vertical direction by a periodic force A cos(ωt). We reuse code relevant to the driven pendulum system in SICM: Section 1.6.2 contains the Lagrangian for a driven pendulum in general, Section 1.7 provides for the specific case ...

In order to improve the energy capture efficiency of a multi-pendulum wave energy converter, a mathematical model of the pendulum structure has been built. The final structure parameters of the pendulum have been obtained by using genetic algorithm based on the numerical simulation results of the pendulum structure optimization. The results show that under obtained structure parameters the prop...

We analyzed phonological and visual information processes of four Japanese dyslexic children between 710 years of age. None of them had disability in word retrieval and/or auditory memory. Two of them manifested lower score in phonological awareness tests while the others showed normal score. All children showed subnormal score in a visual cognitive test, a visuo-spacial constructional test, an...

The string pendulum consists of a mass attached to the end of an inextensible string which is fastened to a support. Applying an external forcing to the pendulum’s support is motivated by understanding the behavior of suspension bridges or of tethered structures during earthquakes. The forced string pendulum can go from taut to slack states and vice versa, and is capable of exhibiting interesti...

Generally the inverted pendulum is unstable, because the pendulum will fall downward due to the gravitational force acting on mass of the pendulum. Keeping the pendulum at vertically inverted position, the position of DC motor shaft needs to be controlled using closed loop analysis. For closed loop analysis, feedback or input device such as encoder is used. To control and set the pendulum at de...