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| Number | Title | Issue Date |
| 8084983 | Laundry treatment machine and method of controlling the same There are provided a laundry treatment machine and a method of controlling the same. A temperature around a motor is sensed and the range of current input to the motor in accordance with the sensed temperature is limited in stages. Therefore, the surrounding of the ... | 12/27/2011 |
| 7337343 | Arrangement consisting of a program-controlled unit and a power chip connected to it An arrangement including a program-controlled unit and a power chip, the power chip connected to drive electric loads in accordance with load control data, and the program-controlled unit transmitting the load control data and power chip control data, and the power ... | 02/26/2008 |
| 7332886 | Control system of motors for rotating a disk and for positioning heads of a mass storage disk device An integrated control and power driving system moves a read/write head carrying arm over the surface of a disk. The integrated control and power driving system is applicable to a spindle motor, a mass storage disk drive and a voice-coil motor, for example, and inclu... | 02/19/2008 |
| 7304255 | Vehicle electrical control system for overriding an existing vehicle fuse box The present invention includes an electrical adapter switch assembly for bypassing the door light circuit on a Jeep TJ® when the driver and/or passenger door is removed. The defeat switch is a plug in electrical adapter designed to bypass the door light circuit on ... | 12/04/2007 |
| 7282881 | Power fold mirror control circuit and method A circuit and method of reducing the occurrence of overheating of a power fold vehicle mirror. The circuit controls the operation of the power fold mirror such that when a portion of the circuit reaches or exceeds a predetermined temperature threshold, the vehicle m... | 10/16/2007 |
| 7244106 | Process and device for flow control of an electrical motor fan A method and configuration from maintaining a constant of air to a protective helmet (4) from a fan (3) in a battery powered fresh air unit. The fan (3) is a radial fan with a filter (5) positioned on the suction side of the fan and is op... | 07/17/2007 |
| 7211977 | Pulse width modulation fan control In one embodiment, a fan control system includes a temperature-sensing device that is adapted to sense a temperature of a component and output a temperature feedback signal, and a pulse width modulation control circuit that is configured to receive the temperature f... | 05/01/2007 |
| 7166978 | Motor temperature sensor system and method to determine motor performance An electric motor system includes an electric motor, a temperature sensor mounted therein capable of measuring a local temperature and generating a temperature related signal, and a processor configured to calculate an actual temperature of a rotor magnet from the t... | 01/23/2007 |
| 7164248 | Electric motor drive apparatus and motor-driven power steering system In an electric motor drive apparatus capable of reliably preventing adverse effects on an electric motor, when a control force detected by a torque sensor exceeds a predetermined value, a temperature storing unit stores a temperature detected by a thermistor at that... | 01/16/2007 |
| 7109680 | Inverter device An object is to provide an inverter device capable of realizing exact protection of the winding of a motor. An inverter device for generating a pseudo alternating current by switching a direct current to drive a motor, comprises a controller that executes vector con... | 09/19/2006 |
| 7106955 | Humidity controller A breathing assistance apparatus adapted to deliver humidified gases at a desired level of humidity to a patient including a humidifier and a heated conduit is disclosed. The humidifier includes a controller which determines the flow rate of the gases and then deter... | 09/12/2006 |
| 7081735 | System and method for bypassing a motor drive A motor control system comprising a plurality of motor controllers and a power source adapted to drive an electric motor. The motor control system comprises a switch that is selectively operable between at least a first position and a second position. In the first p... | 07/25/2006 |
| 7075261 | Method and apparatus for controlling a fan A method and apparatus for controlling a fan is disclosed. In one embodiment, a method for controlling a fan includes applying power to the fan at startup. The fan may be supplied a predetermined amount of current, which may break the inertia of the fan propeller an... | 07/11/2006 |
| 7068456 | Method and apparatus for providing multiple power and performance status for a spinning media A method and device for controlling power consumption in a computer having a storage device including a motor and a storage medium is disclosed. The method comprises supplying a first power level to the motor of the storage device to spin the storage medium at a fir... | 06/27/2006 |
| 7038408 | Fan motor speed control circuit A fan motor speed control circuit includes a driving circuit, a voltage division circuit, and a speed modulator. The voltage division circuit has a first transistor and a plurality of resistors and is connected between a voltage source and the driving circuit. The s... | 05/02/2006 |
| 6972539 | Disk drive employing commutation phase modulation and current modulation of a spindle motor A disk drive is disclosed comprising a spindle motor comprising a plurality of windings for rotating a disk. The spindle motor is rotated by commutating the windings over a plurality of commutation states, wherein audible noise generated by the disk drive is reduced... | 12/06/2005 |
| 6903525 | Motor temperature sensor system and method to determine motor performance A method and apparatus is herein disclosed for determining the motor performance of an electric motor through monitoring the temperature of rotor magnets. The temperature is determined by initially heating the rotor magnets to two known temperatures and subsequently... | 06/07/2005 |
| 6731091 | Robot A robot has a robot structure, preferably a plurality of interconnected arms. The robot also has drives for driving the arms, and a plurality of electronic drive units for operating and controlling the drives. The electronic drive units generate heat when in operati... | 05/04/2004 |
| 6204623 | Heater, humidifier or fan including a circuit for controlling the output thereof A heater, humidifier or fan has a control circuit including a microcontroller having an algorithm for controlling power to the appliance. The power to the appliance is varied in accordance with a target temperature/humidity signal and an actual temperatur... | 03/20/2001 |
| 6101827 | Temperature comparison circuit and refrigeration expansion valve Temperature comparison circuits which utilize two thermistors which are initially set up in a balanced bridge using NPN transistors and resistors. As temperature differences between the thermistors cause the bridge to become unbalanced, there is a current... | 08/15/2000 |
| 6078160 | Bidirectional DC motor control circuit including overcurrent protection PTC device and relay A system for controlling electric motors in binary and hybrid applications, particularly motors which are used to control windows which can be moved downwards from one extreme position to another extreme position by a single touch of the switch, and betwe... | 06/20/2000 |
| 6023144 | Drive control method for a motor and an apparatus therefor A motor drive control method and an apparatus therefor in a motor used in an adjusting device for adjusting a physical amount such as a temperature of a heat-generating member, wherein a load on a bearing of the motor caused by frequently repeating drive/... | 02/08/2000 |
| 5886496 | Tilt servo controlling apparatus A tilt servo controlling apparatus is provided with: an optical pickup for emitting a light beam onto an optical record medium and detecting a reflection light from the optical record medium to thereby output a detection signal; a level detecting device f... | 03/23/1999 |
| 5831405 | High precision fan control/alarm circuit A motor speed control circuit includes a temperature sensor providing a first voltage output which is proportional to the temperature and a control voltage generator having an internal voltage reference receiving the first output as an input. The control ... | 11/03/1998 |
| 5760563 | Method and apparatus for providing thermal feedback between an analog power chip and a digital controller chip in a disk controller system A disk drive has a microprocessor, a digital controller chip, and an analog power chip, and a multi-winding spindle motor. The power chip operates under gross and fine control to connect and disconnect, during ON and OFF phases, a supply voltage to each w... | 06/02/1998 |
| 5680025 | Proactive motor monitoring for avoiding premature failures and for fault recognition Apparatus which automates the collection of motor temperature, flux and shaft current data for proactive motor maintenance. Motor speed is determined by an analysis of the flux frequency spectrum, and motor load is determined based on speed, from which a ... | 10/21/1997 |
| 5534759 | Electric vehicle monitoring system An Electric Vehicle Monitoring System (EVMS) for measuring the performance f an electric vehicle. The preferred embodiment of the system comprises: (1) a variety of sensors for obtaining data on vehicle performance and operating parameters; (2) a digital d... | 07/09/1996 |
| 5488276 | Apparatus for driving and controlling motor An apparatus for driving and controlling a motor which moves a movable portion of a vehicle by driving force of the motor. The apparatus includes a drive stopping circuit for comparing a value of current detected by a current detection circuit, which dete... | 01/30/1996 |
| 5363025 | Actuator employing unidirectional motor for bidirectional rotational positioning An actuator employing a unidirectional electric motor driving a first rotating member connected to a second rotating member through a pivotable link of which a first end is connected to the first rotating member at a smaller distance from its axis of rota... | 11/08/1994 |
| 5085267 | Compensating for water pressure variations in a tempered air system for vehicle passenger compartments An automatic control system for regulating the temperature of blower air discharged over a heater core to a vehicle passenger compartment. A thermistor is disposed to sense discharge air adjacent the heater core and provide a temperature signal. An electr... | 02/04/1992 |
| 4949779 | Regulating heater discharge air temperature for front and rear passengers in a vehicle A temperature control system for a passenger van having individual temperature selection controls for passengers in the forward and rear sections of the passenger compartment. Separate exothermic heat exchangers for circulation of engine coolant therethro... | 08/21/1990 |
| 4871011 | Air-conditioning equipment for vehicle An air-conditioning equipment for a vehicle includes first and second local shutter control units each having a motor for moving a shutter, a drive circuit for driving the motor, a controlling device responsive to a heat load signal to control the drive c... | 10/03/1989 |
| 4644239 | Motor actuator with control means responsive to internal and external conditions A motor actuator, responsive to conditions such as temperature, and to the position of a mechanism which the motor moves during operation, such as a damper which separates a refrigerating chamber from a cold storage area. The motor actuator is a capable o... | 02/17/1987 |
| 4454503 | Transistor fault indicator A transistor fault indicator circuit monitors the conduction state of a transistor and compares that state to a commanded state. Differences in states are treated as faults and actuate an alarm or shut down the system including the transistor. In systems ... | 06/12/1984 |
| 4449085 | Control for operation of a machine tool To control the operation of a machine tool, which has a tool bit cutting a workpiece, the temperature of a measurement spot or area, such as on the cut surface of the workpiece, is checked by an optical element which collects infra-red radiation and focus... | 05/15/1984 |
| 4421269 | System for control of water temperature A system for automatic control of water temperature by means of a plurality of pushbuttons or their equivalent bearing indicia identifying a range of available temperatures which, when actuated through appropriate circuitry, control the water valve settin... | 12/20/1983 |
| 4348624 | Thermal servo system for mechanical positioning A thermally controlled servo system in which a member supporting the drive for a device to be accurately positioned is moved relative to a stationary support member in response to changes in temperature of an elongated, tensioned member. Changes in temper... | 09/07/1982 |
| 4232259 | Servo-system A servo-system includes a high-gain direct-coupled direct current (dc) differential amplifier to which a dc input signal is fed. An adder adds the dc amplifier output to a comparison voltage, and the adder output is applied through a filter circuit to a s... | 11/04/1980 |
| 4161678 | Servo-system A servo-system is provided for self-balancing systems using an ac servomotor capable of maintaining loop gain substantially constant irrespective of span adjustment and without capacitor coupling. It includes a direct-coupling dc amplifier for comparing i... | 07/17/1979 |
| 4070610 | Proportional motor circuit A proportional motor control circuit for supplying bidirectional drive to a motor as a function of variations of a sensed parameter includes a temperature sensing amplifier which is responsive to an error signal indicative of deviations of the parameter f... | 01/24/1978 |
