System for generating motor driving signal

A motor drive and drive signal technology, which is applied in the control system, AC motor control, linear DC motor control, etc., can solve the problems of high cost, large vibration, slow response speed, etc.

Active Publication Date: 2020-05-29
上海芯空微电子科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vibration direction of the Z-axis vibration motor is perpendicular to the screen of the mobile phone, and its cost is low, but the vibration is small and the response speed is slow
The vibration direction of the X-axis vibration motor is parallel to the direction of the narrow frame of the mobile phone. The cost is high, but the vibration is large and the response speed is fast.

Method used

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  • System for generating motor driving signal
  • System for generating motor driving signal
  • System for generating motor driving signal

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Embodiment Construction

[0012] In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

[0013] The terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and are not necessarily used...

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Abstract

The invention relates to the technical field of terminal equipment, and discloses a system for generating a motor driving signal. The system comprises a vibration motor, a signal generator, an acceleration sensor and a control device, wherein the vibration motor is configured to generate vibration under action of a voltage driving signal; the signal generator is electrically connected with a driving end of a motor and is configured to be controlled to generate a voltage driving signal for driving the motor to vibrate; the acceleration sensor is connected with a vibration end of the motor and is configured to sense the vibration of the motor and convert the sensed vibration into an electric signal; and the control device is configured to control the signal generator according to the electric signal and adjust the voltage driving signal till that the vibration of the vibration motor meets a condition. Related parameters of the vibration motor can be counted and measured by utilizing thecontrol device, iterative attempts are performed by adjusting the voltage driving signal for multiple times to obtain a relatively appropriate waveform of the voltage driving signal, and the vibrationmotor can vividly simulate a vibration hand feeling of a mechanical key by adopting the voltage driving signal.

Description

technical field [0001] The present application relates to the technical field of terminal equipment, for example, to a system for generating a motor driving signal. Background technique [0002] The full screen and non-porous design of mobile phones are two important current trends, both of which require the support of vibration feedback. Currently, mobile phones usually use Z-axis vibration motors or X-axis vibration motors to generate vibration feedback. The vibration direction of the Z-axis vibration motor is perpendicular to the screen of the mobile phone, and its cost is low, but the vibration amount is small and the response speed is slow. The vibration direction of the X-axis vibration motor is parallel to the direction of the narrow frame of the mobile phone, and its cost is high, but the vibration amount is large and the response speed is also fast. Regardless of whether it is an X-axis vibration motor or a Z-axis vibration motor, in order to realistically simulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P25/032H02P7/02
CPCH02P25/032H02P7/02
Inventor 司宏伟
Owner 上海芯空微电子科技有限公司
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