Individual actuator-sensor for generating haptic effect on panel, and use of same
A sensor and actuator technology that can be used in instruments, fluids utilizing vibration, input/output processes of data processing, etc., and can solve problems such as high cost, crosstalk, and disturbing vibration effects.
Pending Publication Date: 2021-09-28
哈图优公司 +1
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Problems solved by technology
[0002] Known haptic interfaces that use multiple actuators, especially piezoelectric actuators, have several problems associated with their architecture for feeding and controlling the actuators , crosstalk between actuators, or excessive sensitivity to ambient conditions
This has the drawback of requiring a consistent connection of power and signals to the actuator between the actuator and this single controller (DSP)
Also, in this case the controller has to be a very fast and expensive one
[0010] Furthermore, in known architectures with distributed multiple actuators, the distribution of the power feed to the individual actuators is usually done at high voltage, so there is a risk of crosstalk phenomena, whereby the power feed of one actuator may Interfering with the feed of adjacent actuators and thus the overall vibratory effect
It can also interfere with the measurement of vibration, so the feed voltage of the actuator may also be present in the vibration measurement of the system sensor
[0011] Finally, known architectures with multiple actuators are often very sensitive to changes in ambient conditions, such as operating temperature, and thus interfere with the haptic effects obtained by means of the actuators
Method used
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[0047] refer to figure 1 , figure 1 Schematically shows the experimental setup known from the above-cited document (2) and using a single Langevin-type actuator consisting of a vibrating body with a textured upper surface inserted into an opposing body composed of piezoelectric sheets between them. The piezoelectric vibration sensor is fixed directly on the Langevin actuator, i.e. on its vibrating body, and not on the plate carrying the Langevin-type actuator. Users can test the haptic effects produced directly on the actuator by placing their fingers on the textured upper surface of their vibrating body. This document does not give any guidance on the use of multiple actuators and sensors co-located on one face of the board and arranged so closely that the co-located actuators and sensors The sensors can respectively actuate and measure the same predetermined vibrational mode of the plate carrying them.
[0048] refer to figure 2 , which shows a schematic diagram...
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The invention relates to an individual actuator-sensor (1) intended to be fixed to a surface (4) to be actuated in at least one predetermined vibratory mode, and comprising an electromechanical actuator (2) and a sensor (3) sensing vibrational speed or deformation, characterized in that the electromechanical actuator (2) and the sensor (3) are co-located on said surface (4), which means to say that the measurement by the sensor (3) is performed in the close proximity of the electromechanical actuator (2), this proximity being such that the actuator (2) and the sensor (3) can respectively actuate and measure the same predetermined vibratory mode.
Description
technical field [0001] The invention relates to the field of interface tactiles using a plurality of electromechanical actuators, especially piezoelectric actuators, distributed over the interface. Background technique [0002] Known haptic interfaces that use multiple actuators, especially piezoelectric actuators, have several problems associated with their architecture for feeding and controlling the actuators , crosstalk between actuators, or excessive sensitivity to ambient conditions. [0003] Regarding the power supply, each piezoelectric actuator must be fed with electrical energy so that it can be converted into deformation by the piezoelectric effect. Therefore, the energy has to be distributed in a complex way over the whole vibrating structure, which leads to the complexity of the actuator feeding architecture. [0004] In some known configurations, the actuators are fed in parallel. The actuators are then fed with the same voltage, but since each actuator can ...
Claims
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IPC IPC(8): G06F3/01H10N30/20
CPCG06F3/016B06B1/0276B06B1/0622B06B2201/55B06B2201/70G06F3/041
Inventor F·吉鲁C·吉罗-奥丁M·安伯格B·勒梅尔-斯迈尔B·查利奥
Owner 哈图优公司