Angular displacement sensor based on electric field modulation

The angular displacement sensor addresses structural complexity by integrating signal input and output on the stator, enabling passive rotor sensing and enhanced signal transmission, thus simplifying the design and expanding detection range.

GB2640995APending Publication Date: 2025-11-12CHONGQING UNIV OF TECH
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Patent Information

Application Number
GB2025012639
Authority / Receiving Office
GB · GB
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-08-08
Filing Date
2024-10-22
Publication Date
2025-11-12

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Abstract

An angular displacement sensor based on electric field modulation comprises a stator base (1) and a rotor base (2) arranged in an upper and lower direction, one or more polar units are arranged on the side surface of the stator base (1) and facing the direction of the rotor base (2), the polar units include at least three groups of sensing electrode groups arranged at intervals around the center direction of the stator base (1), each group of sensing electrode groups includes an excitation electrode (1-1) and a sensing electrode (1-2) arranged at intervals around the center direction of the stator base (1); a modulation unit group having the same number as the polar units and capable of corresponding to each polar unit in the direction of the center of the rotor base (2) is arranged on the side surface of the rotor base (2) and facing the direction of the stator base (1), each modulation unit group includes a modulation unit F (2-1) and a modulation unit G (2-2) arranged in the direction of the center of the rotor base (2), the modulation unit F (2-1) being able to correspond to at least one group of sensing electrode groups in the polar units in the direction of the center of the rotor base (2).
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Citation Information

Patent Citations

  • Electric field type time-grating angular displacement sensor

    CN103968750A

  • Time grating angular displacement sensor

    CN104864804A

  • Absolute type capacitor angle displacement measurement sensor

    CN106643470A

  • Absolute type time grating angular displacement sensor based on combined modulation principle

    CN109297517A

  • MEMS capacitive gate type angular displacement sensor and manufacturing method thereof

    CN111137838A