Method for analysing tire vibration characteristics and an apparatus for carrying out said method
First Claim
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1. A method for non-destructive analysis of natural vibrations of a tire comprising the steps:
- fitting a tire to be analysed on a wheel;
arranging said wheel in an apparatus comprising a wheel support supporting said wheel, wherein said wheel support is adjustably fastened to a stiff frame flexibly connected to a base part by elastic means such that separate analysis of the natural vibrations in a predefined functional direction is allowed;
excitation of vibrations in the predefined functional direction in said wheel by means of an actuator;
measuring an input signal at a contact surface between said tire and said wheel;
measuring an output signal at a surface of said tire; and
calculating transfer function of said tire by means of the input signal and the output signal.
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Abstract
A method for analyzing tire vibration characteristics and an apparatus for carrying out the method, wherein the apparatus includes a stiff frame including a wheel support for supporting a wheel with a tire to be analyzed. A base part is flexibly connected with the frame by elastic means. The elastic means is embodied such that the frame is flexibly supported in one predefined functional direction. An actuator is provided for exciting vibrations into the wheel. The method and apparatus allow separate analysis of the natural vibrations in all four functional directions.
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Citations
17 Claims
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1. A method for non-destructive analysis of natural vibrations of a tire comprising the steps:
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fitting a tire to be analysed on a wheel; arranging said wheel in an apparatus comprising a wheel support supporting said wheel, wherein said wheel support is adjustably fastened to a stiff frame flexibly connected to a base part by elastic means such that separate analysis of the natural vibrations in a predefined functional direction is allowed; excitation of vibrations in the predefined functional direction in said wheel by means of an actuator; measuring an input signal at a contact surface between said tire and said wheel; measuring an output signal at a surface of said tire; and calculating transfer function of said tire by means of the input signal and the output signal. - View Dependent Claims (2, 3, 4)
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5. An apparatus for non-destructive analysis of natural vibrations of a tire, comprising:
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a stiff frame comprising a wheel support for supporting a wheel with a tire to be analysed, said wheel support being adjustably fastened to a stiff frame; a base part flexibly connected with said frame by elastic means, said elastic means being embodied such that the frame is flexibly supported in one predefined functional direction; and an actuator for exciting vibrations into said wheel. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification