Magnetostrictive displacement transducer with suppression of switching power supply noise
AssigneeMTS Systems Corporation
InventorsUwe Viola, Aleksey G. Minin, Frank Kraehe
Life of this patent
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Abstract
A transducer senses repetitive pulses on a magnetostrictive element and provides transducer output bursts. A transducer circuit detects the transducer output bursts. An energy storage device couples to a power input of the transducer circuit. A switching power supply couples to the energy storage device and has repetitive suppressed states during which switching in the switching power supply is suppressed. A sequence circuit provides synchronization of the repetitive suppressed states of the switching power supply with the transducer output bursts.
Claims22
A transducer assembly, comprising:
- a transducer that provides transducer output bursts;
- a transducer circuit that repetitively detects the transducer output bursts and that provides an output representative of displacement;
- an energy storage device coupled to a power input of the transducer circuit;
- a switching power supply that couples to the energy storage device and that has repetitive suppressed states during which switching in the switching power supply is suppressed;
- and
- a sequence circuit that couples to the switching power supply and to the transducer circuit, the sequence circuit providing synchronization of the repetitive suppressed states of the switching power supply with the repetitive detecting of the transducer output bursts.
A method of transducing displacement, comprising:
- providing transducer output bursts representing repetitive pulses on a magnetostrictive element;
- repetitively detecting the transducer output bursts with a transducer circuit to provide an output representative of displacement;
- energizing the transducer circuit with an energy storage device and a switching power supply;
- providing the switching power supply with repetitive suppressed states during which switching in the switching power supply is suppressed;
- and
- synchronizing the repetitive suppressed states of the switching power supply with the repetitive detecting of the transducer output bursts.
A transducer assembly, comprising:
- a transducer that provides transducer output bursts;
- an energy storage device;
- a switching power supply that couples to the energy storage device and that has repetitive suppressed states during which switching in the switching power supply is suppressed;
- and
- a transducer circuit that has a power input that couples to the energy storage device, and the transducer circuit repetitively detects the transducer output bursts and provides an output representative of displacement, the repetitive suppressed states being synchronized with the transducer output bursts.
A transducer assembly, comprising:
- a transducer that provides transducer output bursts;
- an energy storage device;
- a switching power supply that couples to the energy storage device and that has repetitive suppressed states during which switching in the switching power supply is suppressed;
- and
- means for repetitively detecting the transducer output bursts when the switching power supply is in a suppressed state and for providing an output representative of displacement.
Dependencies are inferred from the claim text.