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US 7,843,098 B2Granted
Method for operating an electromotive drive
AssigneeOerlikon Textile GmbH & Co. KG
InventorsNorbert Coenen, Marco Linke
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AssigneeOerlikon Textile GmbH & Co. KG
InventorsNorbert Coenen, Marco Linke
Estimating the term…
A method for operating an electromotive drive of a textile machine, comprising a contactlessly mounted rotor and catch bearings. The rotor rests on one catch bearing prior to initial operation, and is spaced therefrom by an air gap during stationary operation. A control device allows the rotor to be held in a force-free floating state during stationary operation. The method executes the following steps: (a) inputting an output signal from the control device for maintaining the force-free floating state during operation; (b) calculating the air gap by evaluating the output signal; (c) comparing the calculated value with predetermined limit values; and (d) deactuating the drive when the limit values are passed. The control device comprises a position sensor with at least one sensor coil, at least one actuator coil, a position controller and an integrator, at which the output signal is obtained to determine the air gap.
Method for operating an electromotive drive, in particular a single drive of a textile machine, comprising a contactlessly mounted rotor (1), catch bearings (10), wherein the rotor (1) rests on one of the catch bearings (10) prior to initial operation of the electromotive drive, and from which the rotor (1) is spaced apart during stationary operation by a bearing air gap, as well as a control device, which comprises a position sensor (11) and at least one actuator coil (5) and which allows the rotor (1) to be held in a force-free floating state during stationary operation wherein the rotor floats axially about a working point, characterized by the following steps:
Electromotive drive, in particular for a textile machine, comprising a contactlessly mounted rotor (1), catch bearings (10), wherein the rotor (1) rests on one of the catch bearings (10) prior to initial operation of the electromotive drive, and from which the rotor (1) is spaced apart during stationary operation by a bearing air gap, as well as a control device, which comprises a position sensor (11) and at least one actuator coil (5) and which allows the rotor (1) to be held in a force-free floating state during stationary operation wherein the rotor floats axially about a working point, characterized in that the position sensor (11) has with at least one sensor coil (87), the at least one actuator coil (5) is can be provided with, electrical energy in a defined manner, the control device further comprises a position controller (12) and an integrator (15), at which an output signal (ASI) is picked up, the control device is connected to a control arrangement to evaluate the output signal (ASI) and calculate the bearing air gap and the control arrangement is set up to compare the calculated value for the bearing air gap with predeterminable limit values and to switch off the electromotive drive when the limit values are passed.
Dependencies are inferred from the claim text.