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US 6,499,194 B1Granted
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AssigneeMaschinenfabrik Rieter AG
InventorsGötz Theodor Gresser, Christian Müller, Christian Griesshammer
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AssigneeMaschinenfabrik Rieter AG
InventorsGötz Theodor Gresser, Christian Müller, Christian Griesshammer
Estimating the term…
The invention relates to a method for controlling the draft of a fiber mixture (e.g. a sliver) of a textile machine, with sensors being provided which detect the fluctuations in mass of the fiber mixture which is supplied to a drafting arrangement unit including at least one changeable drafting zone which compensates the fluctuations in mass. A delay time is provided in order to take into account the running time of the fiber mixture from the measuring sensor up to a control application point. A method is therefore proposed whereby, for the purpose of changing certain control parameters, the delivery speed of the fiber mixture and/or the comparison of the measured progress of the mass of the fiber material supplied by the drafting arrangement unit with a predetermined setpoint progress of mass (setpoint) are used.
A method to control drafting of a fiber mixture of a textile machine, with means being provided which detect fluctuations in mass of the fiber mixture which is supplied to a drafting arrangement unit comprising at least one changeable drafting zone which compensates for the fluctuations in mass, and a delay time being provided in order to take into account running time of the fiber mixture from a measuring element up to a control application point, wherein in that for changing certain control parameters delivery speed of the fiber mixture and comparison of the measured progress of the mass of the fiber material supplied by the drafting arrangement unit with a predetermined setpoint progress of mass are used;
A method to control drafting of a fiber mixture of a textile machine, with means being provided which detect fluctuations in mass of the fiber mixture which is supplied to a drafting arrangement unit comprising at least one changeable drafting zone which compensates for the fluctuations in mass, and a delay time being provided in order to take into account running time of the fiber mixture from a measuring element up to a control application point, wherein in that for changing certain control parameters delivery speed of the fiber mixture and comparison of the measured progress of the mass of the fiber material supplied by the drafting arrangement unit with a predetermined setpoint progress of mass are used;
A method to control drafting of a fiber mixture of a textile machine, with means being provided which detect fluctuations in mass of the fiber mixture which is supplied to a drafting arrangement unit comprising at least one changeable drafting zone which compensates for the fluctuations in mass, and a delay time being provided in order to take into account running time of the fiber mixture from a measuring element up to a control application point, wherein in that for changing certain control parameters delivery speed of the fiber mixture and comparison of the measured progress of the mass of the fiber material supplied by the drafting arrangement unit with a predetermined setpoint progress of mass are used;
A method to control drafting of a fiber mixture of a textile machine, with means being provided which detect fluctuations in mass of the fiber mixture which is supplied to a drafting arrangement unit comprising at least one changeable drafting zone which compensates for the fluctuations in mass, and a delay time being provided in order to take into account running time of the fiber mixture from a measuring element up to a control application point, wherein in that for changing certain control parameters delivery speed of the fiber mixture and comparison of the measured progress of the mass of the fiber material supplied by the drafting arrangement unit with a predetermined setpoint progress of mass are used;
A method to control drafting of a fiber mixture of a textile machine, with means being provided which detect fluctuations in mass of the fiber mixture which is supplied to a drafting arrangement unit comprising at least one changeable drafting zone which compensates for the fluctuations in mass, and a delay time being provided in order to take into account running time of the fiber mixture from a measuring element up to a control application point, wherein in that for changing certain control parameters delivery speed of the fiber mixture and comparison of the measured progress of the mass of the fiber material supplied by the drafting arrangement unit with a predetermined setpoint progress of mass are used;
A method to control drafting of a fiber mixture of a textile machine, with means being provided which detect fluctuations in mass of the fiber mixture which is supplied to a drafting arrangement unit comprising at least one changeable drafting zone which compensates for the fluctuations in mass, and a delay time being provided in order to take into account running time of the fiber mixture from a measuring element up to a control application point, wherein in that for changing certain control parameters delivery speed of the fiber mixture and comparison of the measured progress of the mass of the fiber material supplied by the drafting arrangement unit with a predetermined setpoint progress of mass are used;
An apparatus to control the draft of a fiber mixture which is supplied by a textile machine to a downstream drafting arrangement unit, a measuring element being provided which detects fluctuations in mass of the fiber mixture which is supplied to a drafting arrangement unit and the drafting arrangement unit is equipped with at least one changeable drafting zone which compensates the fluctuations in mass and whose draft quantity is controlled via a control unit on the basis of the determined fluctuations in the mass in comparison with a predetermined setpoint value and on the basis of a delay time between the measuring element and a control application point, wherein means are provided with which a position from the control application point to the measuring element is determined on the basis of delivery speed of the fiber mixture;
An apparatus to control the draft of a fiber mixture which is supplied by a textile machine to a downstream drafting arrangement unit, with means being provided which detect fluctuations in mass of the fiber mixture which is supplied to a drafting arrangement unit and the drafting arrangement unit is equipped with at least one changeable drafting zone which compensates the fluctuations in mass and whose draft quantity is controlled via a control unit on the basis of the determined fluctuations in the mass in comparison with a predetermined setpoint value and on the basis of a delay time between the measuring location and a control application point, wherein in that at least one further means is provided in order to detect a course of the mass of the fiber material as supplied by the drafting arrangement unit and signals of the means are supplied to the control unit which determines deviations on the basis of a predetermined setpoint value and produces control signals according to the deviations in order to change certain control parameters;
An apparatus to control the draft of a fiber mixture which is supplied by a textile machine to a downstream drafting arrangement unit, with means being provided which detect fluctuations in mass of the fiber mixture which is supplied to a drafting arrangement unit and the drafting arrangement unit is equipped with at least one changeable drafting zone which compensates the fluctuations in mass and whose draft quantity is controlled via a control unit on the basis of the determined fluctuations in the mass in comparison with a predetermined setpoint value and on the basis of a delay time between the measuring location and a control application point, wherein in that at least one further means is provided in order to detect a course of the mass of the fiber material as supplied by the drafting arrangement unit and signals of the means are supplied to the control unit which determines deviations on the basis of a predetermined setpoint value and produces control signals according to the deviations in order to change certain control parameters;
A method for controlling drafting of fiber material in a textile machine wherein the textile machine is provided with a device for sensing fluctuations in fiber material mass and a drafting arrangement in communication with the sensing device to compensate for the mass fluctuations, the drafting arrangement having a changeable drafting zone defining a control application point of the drafting process, said method comprising determining changes in the position of the control application point as a function of changes in delivery speed of the fiber material and varying at least one control parameter of the drafting process to compensate for the change in position of the control application point, and comparing a measured progress of the fiber material mass to a predetermined setpoint progress of mass to change parameters of the drafting.
A method for controlling drafting of fiber material in a textile machine wherein the textile machine is provided with a device for sensing fluctuations in fiber material mass and a drafting arrangement in communication with the sensing device to compensate for the mass fluctuations, the drafting arrangement having a changeable drafting zone defining a control application point of the drafting process, said method comprising varying a control parameter of the drafting process as a function of a comparison of an actual measured progress of the fiber material mass supplied by the drafting arrangement with a standard setpoint progress of the fiber material mass.
An apparatus for controlling drafting of fiber material in a textile machine, comprising:
An apparatus for controlling drafting of fiber material in a textile machine, comprising:
Dependencies are inferred from the claim text.