Class 388/828 - Armature control by digital or combined analog and digital circuitry

Subclass of Class 388 - Electricity: motor control systems
Definition: Subject matter in which regulation of the running speed
No. of patents: 23
Last issue date: 11/20/2007

Number	Title	Issue Date
7298103	Control and motor arrangement for use in model train A control and motor arrangement in accordance with the present invention includes a motor configured to generate a locomotive force for propelling the model train. The control and motor arragement further includes a command control interface configured to receive co...	11/20/2007
7280301	Temperature estimator for electronic device A method and apparatus which can provide a temperature estimate in a hard disk drive or other electronic device is provided. Output from the sensor, which may be indicative of a location spaced from the target temperature location, is sampled and integrated over an ...	10/09/2007
7239170	Apparatus and methods for improved input/output cells Apparatus and methods are provided for improving data exchanges between electronic devices, such as memory controllers and RLDRAMs. An I/O cell includes a signal pad for transferring a first signal to an electronic device coupled thereto and for receiving a second s...	07/03/2007
7190129	System and method for drift compensation when using pulse count controlled motors A system of detecting position drift in the motor due to lost pulses. Due to imperfections in the motor, the timing of the commutation pulses is not uniform but forms a unique repeatable signature. The system identifies lost pulses by using a pattern recognition tec...	03/13/2007
7184654	Semiconductor device control apparatus and method In a control apparatus for a motor, which rotates a fan, a semiconductor device is connected to the motor in series to drive the motor. An analog driver circuit drives the semiconductor device with an analog voltage. A PWM control circuit drives the semiconductor de...	02/27/2007
7046917	Speed controlling device of a motorized cart for a person to ride on A device of a cart includes a control, a speed regulating potentiometer, a microprocessor, a digital-to-analogue converter, a motor controlling unit, and a switch; the control is angularly displaceable and near to handlebars of the cart; the potentiometer is connect...	05/16/2006
6949900	MCU control for brushless DC motor A processor for controlling a sensorless, brushless DC motor is disclosed comprising a first output for providing a control signal to a potentiometer controlling the speed and voltage of the DC motor. The processor also includes a second input for receiving a back-E...	09/27/2005
6895176	Method and apparatus for controlling electronically commutated motor operating characteristics A permanent magnet DC brushless motor control assembly permits a user to select the permanent magnet DC brushless motor operating characteristics by selecting appropriate control circuits to interface with the motor. The assembly includes a permanent magnet DC brush...	05/17/2005
6693400	Multi-mode motor controller chip set A multi-mode motor controller architecture includes a motor, an integrated circuit controller, and an integrated circuit driver circuit. The integrated circuit controller includes a pulse generator, a DAC, an ADC, and a digital compensator circuit. The in...	02/17/2004
6128437	Digital control for revolving speed of DC motor A digital control device used with a direct-current (DC) motor is disclosed. The digital control device controls the revolving speed of a DC motor by outputting a certain intensity of current according to the digital states of a group of digital signals i...	10/03/2000
5991505	Switching motor control apparatus A motor control apparatus for controlling a motor is provided. The motor has an output power stage and a relay allowing power to be connected to the output power stage. The apparatus comprises a microprocessor providing a PWM cycle delivered through a cap...	11/23/1999
5029230	Motor control apparatus and speed setting apparatus A motor control apparatus for a sewing machine includes an adjustable speed setter for generating a speed set signal. A first memory stores a plurality of reference values each defining a reference region into which the speed set signal can fall. A second...	07/02/1991
4934844	Remote-control system for sewing machine A remote-control system is used in combination with a sewing machine for controlling revolution of a sewing machine motor. A remote-controller is connected to a main body of the sewing machine and operated by the sewing machine operator to change a resist...	06/19/1990
4933616	Drive control system for imprinting apparatus The mailing machine includes a print drum and shutter bar assemblies and a transport system for receiving seriately and assuming displacement control over envelopes from a feed means. The mailing machine drive control system is a microcomputer in control ...	06/12/1990
4855654	Rotary body drive device A rotary body drive device for controlling rotation of a motor on the basis of the phase difference between a periodic signal produced in accompaniment with rotation of the motor and a reference clock signal so that their phase relationship becomes a pres...	08/08/1989
4841206	Speed control device for an electronic sewing machine Variable potential and breaking detection potential of a controller in a sewing machine are respectively subjected to analog-to-digital conversions, thereby to make it possible that the breaking detection of the controller and correction of dispersions of...	06/20/1989
4578624	Speed setting arrangement for sewing machines A speed setting arrangement for a sewing machine comprises a permanent magnet mounted for unitary rotation with the foot pedal of the sewing machine, and a magnetic sensor including a plurality of magnetoresistors arranged in pairs to form a bridge circui...	03/25/1986
4555651	Motor speed control apparatus Apparatus is provided for controlling increases in the speed of a motor, including a transducer coupled to an accelerator pedal, that generates digital numbers representing motor speed commands, a data processor for receiving the speed commands, generatin...	11/26/1985
4477751	Motor brake device A motor brake device comprises a plurality of transistors for shunting a circuit loop through which a back electromotive force current caused by an inertia rotation of the motor flows, in which some of these transistors are operated as an inversed transis...	10/16/1984
4289999	Digital variable voltage level control circuit with automatic return to neutral A control circuit generates a variable analog output voltage in response to momentary closure of touch control means by an operator. The control level selected via the touch control means is sampled, digitized, digitally stored and reconverted to the anal...	09/15/1981
4031438	Control device for the rotary motor of a watch A control device for the motor of a watch including first and second zero detectors and a delay device for providing gating signals to an AND gate to enable transmission of driving in phase with the a.c. voltage induced in the coil. BACKGROUND OF THE INVE...	06/21/1977
4029192	Digital circuit for controlling the return speed of a business machine carriage A digital electrical circuit for selectively activating a clutch mechanism for controlling the return speed of a business machine carriage. A carriage speed pulse transducer provides a series of sync pulses with intervals between each sync pulse being a f...	06/14/1977
3941198	Detachable power unit for a golf bag cart A compact, light weight and easily detachable power unit for driving a golf bag cart by means of an electric motor carried by the unit. The unit includes an articulated frame having an attaching portion which is quickly attachable to or detachable from th...	03/02/1976

PatentStorm

Quotables

PatentStorm News

Class 388/828 - Armature control by digital or combined analog and digital circuitry