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Class 388/909 - Monitoring means


Subclass of Class 388 - Electricity: motor control systems
Definition: Art collection of systems with means to monitor one or more
No. of patents: 76
Last issue date: 06/19/2007


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NumberTitleIssue Date
7233120Optimal fan presence detection
Detecting the presence of an electric fan is described. A current sink circuit is coupled to a pulse width drive output of a fan control circuit. A logic state in a logic input buffer is defined based on current flow through the current sink. The logic state indicat...
06/19/2007
7122982DC motor rotation information detecting device
A rotation information detection device detects rotation information of a DC motor based on a surge component waveform superimposed on a voltage waveform between the terminals of the DC motor or a current waveform of the DC motor, a circuit is provided which supplie...
10/17/2006
7084588Method, apparatus and article for motor control voltage dropout detection
A control subsystem for an electric motor determines whether power was interrupted, and delays torque production if power was interrupted. The control subsystem may employ two separate non-volatile memory locations, or alternatively a single non-volatile memory loca...
08/01/2006
7046032Electrical connection plug for remote monitoring of high voltage motors
The present invention provides a motor signature measuring system comprising three current transformers which are placed around the power cables leading to the high voltage motor, an E-Plug module connected to the current transformers and located in a motor control ...
05/16/2006
7042180Brushless and sensorless DC motor control system with locked and stopped rotor detection
A motor control system for a brushless and sensorless DC motor for driving a compressor, pump or other application, includes a protection and fault detection circuit for detecting a locked rotor and a rotor which has stopped because of lost rotor phase lock. The mot...
05/09/2006
7030578Method for controlling and regulating the operation of an actuator
The method makes it possible to control and monitor the dynamic operation operation of an actuator intended to drive a movable element of a building protection installation. The actuator is associated with nearby controlling means comprising a power supply device or...
04/18/2006
6965208Motor speed detecting device for use between motor and system
A motor speed detecting device for use between a motor and a system is provided. A motor speed detecting device for use between a motor and a system includes a first input terminal and a second input terminal, wherein the first and second input terminals are electri...
11/15/2005
6949904Power actuated seat
Embodiments of the present invention provide methods and apparatus for controlling seats and for monitoring behavior of power-actuated seats. Certain embodiments permit seat occupancy data, e.g., whether the seat is occupied or a weight-dependent characteristic of t...
09/27/2005
6901316Electrical control system configuration method and apparatus
A technique for configuring programmable, networked electrical components of a system includes downloading data into each component from a configurator, based upon a database for the system. The components include memory objects which are designed to store data desc...
05/31/2005
6803736Control system which carries out the model-supported safety monitoring of an electronically regulated controller in the motor vehicle
A system for controlling a regulator equipped with an electric servomotor in a motor vehicle. With reference to an example of an electronic steering system that has an electric-motor steering regulator, output parameters are generated by a model-assisted monitor for...
10/12/2004
6768281Verification 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 and amplifier sense signals against thresholds; and verifies Hall senso...
07/27/2004
6762577DC motor speed control system
A method for controlling speed in a pulse-width-modulation-controlled motor powered by a load voltage source is provided. The method includes the steps of measuring the motor load voltage, and setting a pulse-width-modulation duty cycle based on the measured voltage...
07/13/2004
6690129Electronically commutable motor
An electronically commutatable motor, whose excitation windings are controllable via semiconductor output stages by an electronic control unit with the aid of PWM control signals, a setpoint value being specifiable to the control unit, and the control uni...
02/10/2004
6670785Electrical machine drive system and method
An electrical machine drive system is simulated with a circuit simulator to model normal operation, fault modes and control strategies for electric motor based vehicles. The electrical machine drive system includes a DC power source model (102), an invert...
12/30/2003
6646397Integrated control and diagnostics system
An integrated control and diagnostics system for a controlled system (e.g., a motor) includes a diagnostics module and a controller coupled to the motor. To optimize operation, the diagnostics information signal is used to modify the control provided by t...
11/11/2003
6563281Device for controlling the operation of driving apparatus
A device for monitoring operation of a driving arrangement including at least a servo-mechanism, which includes a regulator, a driving motor controlled by the regulator, and an element which can be set in motion by the driving motor. A detection arrangeme...
05/13/2003
6552506Method for determining the position of an element driven by the drive shaft of a direct current motor
A method for determining the position of a movable element to be driven by a direct current motor between first and second positions includes counting ripples contained in a motor current signal as the motor rotates to drive the element. The position of t...
04/22/2003
6534940Marine macerator pump control module
A marine macerator switch including a comparator programmable with over and under current limits corresponding with the characteristics of a macerator drive motor. A sensing circuit senses the real time motor current and compares it with the current limit...
03/18/2003
6326758Integrated diagnostics and control systems
An integrated control and diagnostics system for a controlled system (e.g., a motor) includes a diagnostics module and a controller coupled to the motor. To optimize operation, the diagnostics information signal is used to modify the control provided by t...
12/04/2001
6321029DC fan having a power sleep-mode control unit and method for controlling the same
A DC fan using a power supply and sleep/non-sleep-mode signals for controlling the rotating speed thereof includes a DC brushless motor and a power sleep-mode control unit. The DC brushless motor serves as a driving source of the DC fan. The power sleep-m...
11/20/2001
6320339Control device for controlling current passing through a motor
A control device for controlling current to a motor includes a current sensor connected to a power module for generating an electric signal corresponding to magnitude of the current to the motor, and a processor connected to first and second current detec...
11/20/2001
6262550Electrical motor monitoring system and method
An integrated motor monitoring system collects, analyzes, and stores to database(s) on-line and off-line coordinated real-time motor data for industrial AC and DC motors. On-line coordinated real-time motor data from both on-motor sensors and remote senso...
07/17/2001
6229276Movable barrier operator
A movable barrier operator having improved safety and energy efficiency features automatically detects line voltage frequency and uses that information to set a worklight shut-off time. The operator automatically detects the type of door (single panel or ...
05/08/2001
6198248Method of controlling a rotary electrical machine, a servo-control system for implementing the method, and a rotary machine fitted with such a system
A method of controlling the torque of a rotary machine powered by means of an inverter and servo-controlled by a system having sensors, an observer, and a computer which delivers controls to the switches of the inverter on the basis of values supplied to ...
03/06/2001
6194858Speed control device of cooling fans and method of control thereof
A speed control device for a cooling fan and a method of control thereof are disclosed, in which temperature and noise among other factors are taken into consideration, whereby changes to the voltage/current of power supply provided to the cooling fan are...
02/27/2001
6124692Method and apparatus for reducing electrical power consumption in a machine monitor
Power saving features are employed in a machine monitor to reduce electrical power consumption and increase the life of an electrical power source (such as a battery) which is used to power the monitor. The monitor includes a microcomputer having a high o...
09/26/2000
6087798Semiconductor integrated circuit device and disk drive apparatus
A semiconductor integrated circuit device for use in a disk drive apparatus has a stepping motor driver for feeding an electric current to a stepping motor, a temperature monitoring circuit for monitoring the temperature due to the heat generated by the s...
07/11/2000
6078154Circuitry for determining actuator position
Circuitry (100, 100') for determining actuator position includes four MOS transistors (T1-T4) connected to each side of a bi-directional motor (10). The current flowing through the motor (10) at any given time is proportional to voltages developed across ...
06/20/2000
6046562Security system for automatic door
A system and device for insuring the integrity of an automatic door has a sensor to determine the status of the door with respect to a predetermined position and a programable actuator which provides a positive signal for automatically moving the door to ...
04/04/2000
5925992R/C model speed controller
A speed controller circuit for a radio controlled (R/C) model includes a preprogrammed controller, first and second pushbutton switches, and a row of at least four light emitting elements (e.g., LEDs). The speed controller circuit is adapted to be mounted...
07/20/1999
5723958Arrangement for operating a consumer in a motor vehicle
An arrangement for driving a consumer in a vehicle is suggested. The arrangement has at least two switch elements for influencing the current flow through the consumer. For each switch element, the current flowing through this switch element is monitored ...
03/03/1998
5554913Blower system for vehicle air-conditioners
For enabling discrimination of whether or not a blower motor is in a locked state to be conducted promptly and reliably irrespective of the motor speed, a blower system comprises a discrimination circuit for discriminating whether or not the blower motor ...
09/10/1996
5539290Automatic venting system for a vehicle with obstruction detection utilizing dynamically modified thresholds
A motor control system for controlling operation of an electric motor associated with a motor-operated vent in a vehicle. The system monitors and stores data relating to the operating current and detects occurrences of abnormal loads applied to the vent b...
07/23/1996
5524168Method and apparatus for DC motor speed monitoring
In two embodiments of the present invention, the speed of a DC motor is determined by examining the signal at the negative terminal of the motor. The signal is high-pass-filtered to extract the AC component of the signal. The frequency of this signal is, ...
06/04/1996
5519298Abnormality detection method, stability degree determination method and operation control method for mechanical equipment
The value of a variable reflecting the operating condition of mechanical equipment is continuously detected as operation condition data. A long period average value of the operating condition data detected in long reference period, and a short period aver...
05/21/1996
5457373Electric motor with integrally packaged day/night controller
An AC motor is provided with a motor housing and a photoelectric sensor associated with the housing. The sensor is part of a motor control circuit which is thereby responsive to the ambient light condition to control the motor by selectively switching At ...
10/10/1995
5399950Automatic venting system for a vehicle with obstruction detection utilizing dynamically modified thresholds
A motor control system for controlling operation of an electric motor associated with a motor-operated vent in a vehicle. The system monitors and stores data relating to the operating current and detects occurrences of abnormal loads applied to the vent b...
03/21/1995
5349276Control system for regulating motor speed
A motor control system accurately and reliably controls the speed of a motor so that the motor operates in accordance with a predetermined motor speed profile, and therefore does not exceed a predetermined safe speed, decelerates at a controlled rate, mai...
09/20/1994
5194789Automatic mirror repositioning system diagnostics
A memory mirror system having a mirror 19, two constant speed motors 16,18 each controlling an axis of mirror movement, position feedback signals 26,28 from each motor, switch inputs 12, a diagnostic push button 40, and an electronic controller 10, is pro...
03/16/1993
4901366Circuit arrangement for the timed control of semiconductor switches
In a circuit arrangement for the timed control of semiconductor switches (1-4) to each of which a freerunning diode (D1-D4) is connected in parallel and which are arranged in branches of a bridge, an ohmic-inductive load (5) of low loss power which lies i...
02/13/1990
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