Considered is the control and stabilizability of a slowly rotating non-homogeneous Timoshenko beam with the aid of a torque. It turns out that the beam is (approximately) controllable with the aid of the torque if and only if it is (approximately) controllable. However, the controllability problem appears to be a side-effect while studying the stabilizability. To build a stabilizing control one...

New downhole turbine generator can transmit the high speed rotation of the turbine to the rotor of the generator without contact by magnetic transmission mechanism to provide continuous power. Driving torque on magnetic transmission mechanism is a key parameter. This paper mainly studies the field on magnetic transmission mechanism of downhole turbine generator by using ANSYS software. The effe...

Experiments were conducted over the course of 3 days, with all data for each high-level assistance controller collected on the same day. Low-level torque controllers were collected in the same order for each high-level controller, except for a change in the order of the PAS controller for the Time-based desired torque (which was accidentally skipped, then caught at the end of the collection). T...

Haldex Traction can with their Active Yaw Control prevent unwanted handling when driving a vehicle, by applying an extra torque with their all wheel drive system. To be able to calculate when and how this torque should be applied, it is important to the state information of the vehicle. When driving on banked roads, vehicle dynamics and sensor measurements are changed compared to when driving o...

In this paper, we present the results of our experimental effort in one form of impulsive manipulation: tapping. Our previous work studied the mechanics of tapping a planar object which then slides on a support surface, coming to rest due to friction. This work addresses the practical issues in creating a system which uses this mode of manipulation. We begin with the design of tapping devices—e...

In this paper, an optimum-efficiency control scheme of synchronous reluctance motors is presented. There exists a variety of combinations of dand q-axis current which provides a specific motor torque. The objective of the optimum-efficiency controller is to seek a combination of dand q-axis current components, which provides minimum input power, that is, minimum losses at a certain operating po...

Repetitive tasks in industrial works may contribute to health problems among operators, such as musculo-skeletal disorders, in part due to insufficient control of muscle fatigue. In this paper, a predictive model of fatigue is proposed for repetitive push/pull operations. Assumptions generally accepted in the literature are first ex1 plicitly set in this framework. Then, an earlier static fatig...

The measurement of time–varying forces and torques applied to flexible mechanical structures cannot be pursued by relying on quasi–static approximations. However the problem can be casted as a problem of system inversion, provided reliable models of the dynamic relationship among force/torques and measurement gauges are available. Within this framework, it is possible in particular to define op...

To achieve a desired fixed or variable speed (feedrate) along a given curved path, CNC machines employ independent motors to drive each of their axes in a time-coordinated manner. There are physical limits to the torque and power that the motors can supply, and the machine performance is compromised if the demands of overcoming machine inertia, cutting forces, and friction exceed these limits. ...