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8159159 |
Controlling tension in roll-based print media
An apparatus, method and computer program for controlling the tension in roll-based print media. The apparatus comprises: a motor arranged to apply torque to the roll of print media to create...
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8102131 |
Yarn-tensioning device and arrangement and method for operating a creel
The invention relates to a yarn-tensioning device for producing a specific thread pull on a thread (5) that is unwound from a winding point (7) of a creel (2) and is guided to a warping machine...
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7847496 |
Dynamic tape drive calibration
Dynamic calibration of a secondary velocity signal is provided in a tape drive. In one example, a reel motor is operated to drive a reel carrying a tape in a tape drive. The motion of the tape is...
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7753158 |
Seat belt apparatus
A seat belt retractor, which is capable of winding and unwinding a seat belt for occupant restraint by mechanism of an electric motor, removes slack of the seat belt and controls the restraining...
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7746010 |
Feeder
A feeder to be able to meet the requirements of positioning accuracy, long distance conveyance, remote conveyance, controllability, high precision feeding, high speed feeding, inexpensiveness,...
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7723930 |
Method and system in connection with tension measurement of material web
Method and system in connection with a motor operated tension measuring roll (1) for compensating an error in tension measuring of a continuous material web, the method comprising defining the...
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7402964 |
Race car system
A race car system is disclosed. An illustrative embodiment of the race car system includes at least one car, at least one video camera provided on the at least one car, a car transmitter/receiver...
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7378813 |
Method and device for determining the zero position of a yarn guide capable of cross-winding
A system for determining a zero position of a yarn guide (25) of a textile winding device for cross-winding yarn into cheeses via a step motor (34). The yarn guide (25), acted upon by the step...
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7375478 |
Servo drive with high speed wrapping function
A servo drive with high speed wrapping function is applied for servo control of wrapping wire and method for the same. The servo drive includes a wrapping mechanism, a rotation control unit for...
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7187148 |
Controller
Disclosed is a controller for restraining vibration of a driven element driven by a servomotor. The driven element driven by the servomotor is provided with acceleration detecting means. A...
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7132807 |
Model train direction control device
A model train on-board microprocessor provides basic lighting and motor operation and control. A socket provides a seamless instant remote control upgrade using industry standard remote control...
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7026780 |
Method for stabilizing the movement of an articulated chain of a chain block, especially to prevent the formation of a resonance oscillation of the chain, and a chain block apparatus
The invention concerns a method for stabilizing the motion of an articulated chain of a chain block, especially to prevent the formation of resonance oscillation of the chain, in which an...
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6991144 |
Method of controlling tension in a moving web material
A method of dynamically controlling the tension of a moving web material. A web material is transported with an apparatus. A modulus-of-elasticity-analog value is determined for the web material....
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6911799 |
Strapping machine weld motor control system
A control system for a weld motor for a strapping machine is based upon the number of rotations of the weld motor. The system is used in a strapping machine of the type having a body, an anvil...
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6858999 |
DC brushless motor control apparatus
Drivers (12a,12b) drive respective DC brushless motors (8a, 8b) having rotor position detecting Hall-effect devices. A CPU (18) detects the numbers of rotations of the respective motors (8a, 8b) in...
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6856850 |
Controlling web tension, and accumulating lengths of web, using a festoon
This invention pertains to processing continuous webs such as paper, film, composites, and the like, in dynamic continuous processing operations. More particularly, it relates to accumulating...
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6819065 |
Dynamic braking of a tape motor
An apparatus and method for the controlled dynamic braking of a DC motor in a tape transport device are provided. A PWM state device includes a plurality of state transition paths, each path having...
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6812655 |
Induction actuated container
An induction actuated container includes a container body, a container cover, a drive and an induction element. The drive includes a driven operating member and a driving member. The induction...
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6768281 |
Verification of operational capability of a tape drive
Verification system logic operates PWM motor drivers for DC motors of a tape drive, and verifies the on time duty cycle period and offset of the PWM motor drivers; verifies DAC current reference...
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6765356 |
Control and motor arrangement for use in model train
A control and motor arrangement for use in a model train includes a control arrangement integrally constructed with a motor. The control arrangement receives rotational speed and positional...
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6759816 |
Tape drive with non-contact optical tape tension sensor
The invention is a non-contact optical tape tension sensor for a tape drive. A light source directs an incident beam to the tape in a region of the tape path near where the tape bends. The amount...
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6737819 |
Motor retractor system
A motor retractor system includes a first winding device having a motor for driving a shoulder belt in a winding direction, and a second winding device having a tension-applying device for always...
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6680589 |
Relay contact monitoring device
A device for monitoring the state of relay contacts is especially useful for controlling motor windings in air conditioning systems. When a first relay switch, which is operative to supply power to...
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6433499 |
Device and method for automatic tension transducer calibration
An apparatus for calibrating a tension transducer for a web includes a pair of nip rollers and a motor for driving at least one of the pair of nip rollers, the motor having at least one roller...
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6338447 |
Device for tensioning yarn or the like
A device for applying tension to yarn or the like, the device including a stator and a rotor. The rotor includes an outer spool around which, in use, yarn or the like is passed and an inner part...
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6328081 |
Weft tension brake control
A method for controlling electrically actuated weft brakes for automatically adjusting mechanical tension of a weft thread in textile machines with mechanical insertion, comprising the steps of:...
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6314333 |
Method and apparatus for controlling web tension by actively controlling velocity and acceleration of a dancer roll
This invention pertains to processing continuous webs such as paper, film, composites, and the like, in dynamic continuous processing operations. More particularly, it relates to controlling...
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6208096 |
Optimized winding drive
In a tape transport for recording and/or reproducing signals by means of a recording medium using separate winding motors for driving the winding plates, the drive of the winding motors servo units...
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6157146 |
Procedure and apparatus for speed related error correction of measurement signals from fiber band speed in a textile machine
The invention concerns a procedure for correction of error of speed and mechanical related error, particularly in the thickness of a fiber band in a textile machine, especially stretch machines....
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5939845 |
Method for controlling tenter clip gap spacing during simultaneous biaxial stretching using linear synchronous motors
A method is disclosed of temporarily speeding up delayed carriages on a return side of an endless loop of driven carriages in a linear motor web tenter.
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5821724 |
Feedback limiter for closed loop motor controller
An apparatus and method are disclosed for controlling the motion of a machine system so as to cut individual lengths from a web having graphics on predetermined web positions and which allows the...
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5804932 |
Drive system
An object of the present invention is to provide a drive system having a simple structure, which is capable of synchronously moving travellers, having high positioning accuracy and reducing the...
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5790407 |
Time-based control system
A time-based control system (10) for controlling a process incorporating external devices using a predefined response profile (13). The response profile (13) is continuously compared to the actual...
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5773938 |
Apparatus for controlling speed of a rotary motor
A speed control apparatus for a rotary motor includes a motor for rotating at a speed based on a torque command and which outputs a present angular position and a present angular speed of the...
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5731672 |
Control apparatus of DC servo motor
When a processor sets a current instruction value and a rotating direction of a motor, two analog instruction signals of a positive polarity and a negative polarity are obtained after completion of...
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5691610 |
Process for reducing the friction between a rotating head drum and recording medium in tape form during winding operation
A process for reducing the friction between a rotating head drum and a tape-shaped recording medium which surrounds the head drum for recording and/or playing back information. In order to shorten...
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5666034 |
Method for controlling velocity of a rotary motor and an apparatus therefor
A velocity control method for a rotary motor and an apparatus adopting the same estimates and corrects a disturbance applied to the rotary motor to improve a velocity control characteristic. The...
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5659229 |
Controlling web tension by actively controlling velocity of dancer roll
This invention pertains to processing continuous webs such as paper, film, composites, and the like, in dynamic continuous processing operations. More particularly, it relates to controlling...
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5646495 |
Tandem control method based on a digital servomechanism
In the tandem control method designed for driving one axis using a main motor and a sub motor, a speed difference between the main motor and the sub motor is calculated, and a value for correction...
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5640074 |
Vibration dampening method and apparatus for band driven precision motion systems
A method and apparatus are disclosed for joining a drive band to the driven element of a servo-controlled precision motion system. A vibration dampening clamp assembly absorbs unwanted vibration...
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5623189 |
Automatic control of torque or force at moving loads
The invention generates a correction signal for the command input to an automatic feedback control system or servomechanism used to control the torque, force, or tension acting upon an object or...
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5524677 |
Doffing a cloth roll using a DC motor under full power
A doffing mechanism wherein a cloth roll doffer (C) is normally carried in aligned laterally spaced relation to the cloth roll with a motor which are actuated by manually raising the cloth roll...
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5502358 |
Method and apparatus for controlling the tension of a power cord of a self-propelled robot
A self-propelled robot includes an electrical cord mounted on a spool for being drawn-in or drawn-out. A sensor senses a rate at which the cord is drawn in or drawn out and actuates a motor...
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5498940 |
Methods and apparatus for maintaining a constant tension on an electrical cord of a robot
A constant tension is maintained on cord of a robot by determining whether the cord is being extracted or retracted and the extent of such extraction or retraction, and increasing or decreasing a...
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5495157 |
Cable reeling system
A cable reel system for use in conjunction with a mobile installation movable relative to a fixed base station and being connected to the fixed base station via a cable, the system comprising a...
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5485066 |
Variable speed centrifugal drive control for sugar refining machines and the like
A drive control system for a centrifugal used in, for example, a sugar refining operation, optimizes the deceleration and plow-out phases of its operation based on the torque characteristics of its...
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5472127 |
Strip tension control apparatus
The tension of a strip can be controlled with high responsiveness and high accuracy despite its drastic external variation by threading the strip (1) between a transportation roll (2) and a movable...
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5410224 |
Tape position-dependent, standstill tape tension control system
A magnetic tape transport having a pair of reel motors for bidirectionally driving a tape between a pair of reels within a cassette housing, and a pair of tension control transistors for...
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5367232 |
Suspended moving target system
A portable motorized system of pulleys and cable which moves a three dimensional, or conventional target around a predetermined path. The purpose of this system is to simulate, through movement,...
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5367471 |
Method and apparatus for reducing tape stiction
A method and apparatus is disclosed which reduces tape stiction during tape acceleration and deceleration. Tape tension is adjusted to eliminate the effects of tape stiction when the tape is either...
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