Abstract:
An apparatus for controlling a vibration includes a vibration transfer unit; at least one pair of oscillators disposed spaced apart from each other in the vibration transfer unit, and configured to generate a vibration in the vibration transfer unit; at least one driver configured to selectively drive the at least one pair of oscillators; and a controller configured to control the at least one driver and thereby move a center of the vibration within the vibration transfer unit so as to create a moving vibration sensation.
Abstract:
A switching circuit for an electromagnetic source for generating acoustic waves has at least one first capacitor connected in parallel with a series circuit formed by a second capacitor and an electronic switch. The switching circuit is connected to a coil of the electromagnetic source, and the first and second capacitors are switched so as to both discharged into the coil, thereby supplying the coil with current.
Abstract:
A circuit of the present invention is a driving circuit for driving a vibrator having a mechanical vibration system which resonates at a resonance frequency. The driving circuit outputs to the vibrator at least two signals of different frequencies which are included in a frequency range including the resonance frequency. The vibrator has a function of converting an electric signal into at least one of a sound and a vibration.
Abstract:
The method of controlling a linear vibration welding apparatus, in accordance with the invention, may comprise the steps of: fastening a first workpiece portion in a fixed position; fastening a second workpiece portion to a reciprocating member; energizing a first single winding magnet with direct current power to create a magnetic field; sensing a location of the reciprocating member with respect to a zero point; and energizing a second magnet when the reciprocating member has crossed the zero point when moving towards the first magnet. The linear vibration welding apparatus in accordance with the invention may comprise: a frame; a flexure array; a first magnet assembly; a second magnet assembly; a digital controller; and direct current amplifiers for powering the magnet assemblies.
Abstract:
This invention includes a square wave signal generating circuit 20 for generating a square wave signal whose frequency changes; a MOS transistor 12 which is turned on/off on the basis of the square wave signal to supply a driving current to a vibrator 14; and a frequency shift detecting circuit 24 for detecting a frequency shift between the square wave signal from the square wave generating circuit and a resonance frequency of the vibrator. The shift in the frequency generated by the square wave generating circuit is trimmed by a signal detected by the frequency shift detecting circuit.
Abstract:
A horn comprising a diaphragm, an electromagnet, a transducer to sense the vibrations of the diaphragm and generate a vibration-dependent electrical signal, and a feedback circuit which controls a power supply to the electromagnet. The feedback circuit includes an electronic power circuit (E, IEP) controlled by a control circuit (.mu., F, CCS) arranged to adapt, condition and process the electrical signal from the transducer (S) in such a manner as to automatically determine the frequency and duty cycle for controlling the electronic power circuit (IEP) under the various environmental, electrical feed and constructional tolerance conditions of the horn.
Abstract:
Embodiments described herein relate to methods and apparatuses for controlling an operation of a vibrational output system and/or an operation of an input sensor system, wherein the controller is for use in a device comprising the vibrational output system and the input sensor system. A controller comprises an input configured to receive an indication of activation or de-activation of an output of the vibrational output system; and an adjustment module configured to adjust the operation of the vibrational output system and/or the operation of the input sensor system based on the indication to reduce an interference expected to be caused by the output of the vibrational output system on the input sensory system.
Abstract:
Embodiments described herein relate to methods and apparatuses for controlling an operation of a vibrational output system and/or an operation of an input sensor system, wherein the controller is for use in a device comprising the vibrational output system and the input sensor system. A controller comprises an input configured to receive an indication of activation or de-activation of an output of the vibrational output system; and an adjustment module configured to adjust the operation of the vibrational output system and/or the operation of the input sensor system based on the indication to reduce an interference expected to be caused by the output of the vibrational output system on the input sensory system.