Control of a compacting machine
First Claim
1. A method for controlling a body for compacting material comprising the steps of:
- exciting the body to give the body an oscillation movement, the excitation being periodic and having a frequency;
sensing said oscillation movement; and
controlling the exciting step, so that the resulting oscillating frequency of the vibrating body contains a predetermined proportion of a harmonic oscillation having a frequency corresponding to half the frequency with which the body is excited, thereby avoiding undesired oscillation movement.
2 Assignments
0 Petitions
Accused Products
Abstract
A roller machine for compacting is provided with control devices for varying the oscillation movement of the body. The movement of the body may be affected by a weight attached thereto. The oscillation of the vibration body is measured. From this measurement, the portion of the oscillation is determined having a frequency corresponding to half the excitation frequency and the portion for other oscillation, in particular the excitation frequency, are also determined. The excitation of the vibrating body is controlled so that the harmonic component having half the excitation frequency will be in a predetermined proportion of the component of the oscillation component. Such control avoids undesired oscillation movement.
39 Citations
19 Claims
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1. A method for controlling a body for compacting material comprising the steps of:
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exciting the body to give the body an oscillation movement, the excitation being periodic and having a frequency; sensing said oscillation movement; and controlling the exciting step, so that the resulting oscillating frequency of the vibrating body contains a predetermined proportion of a harmonic oscillation having a frequency corresponding to half the frequency with which the body is excited, thereby avoiding undesired oscillation movement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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- 11. A device for control of a body for compacting a material located underneath the body, the body being arranged to be excited by excitation means to give the body an oscillation movement, the excitation being periodic and having a frequency, comprising a controller adjusting the excitation means in accordance with the oscillation movement so that the resulting oscillating movement of the vibrating body contains a predetermined proportion of a harmonic oscillation having a frequency corresponding to half the frequency with which the vibrating body is excited, thereby avoiding undesired oscillation movement.
Specification