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| Number | Title | Issue Date |
| 7784364 | Optical sensor for measurement of static and dynamic torque An optical static and dynamic torque sensor provides a measurement of torque, torque angle, shaft speed or shaft direction by optically detecting the overlapped position of spatially arranged apertures on discs attached to input and output ends of a flexure as torqu... | 08/31/2010 |
| 7559260 | Rotational angle detecting device Supply and interruption of power source to the first angle sensor 2 and the second angle sensor 4 are alternately performed, by comparing the signal Vo1 or Vo2 which is outputted from the first angle sensor 2 or the second angle se... | 07/14/2009 |
| 7520184 | Angular velocity sensor An angular velocity sensor for precisely calculating an angular velocity by taking the mass balance of the transducer into account is provided. The sensor includes a tuning fork type transducer (23) having a pair of arm portions (22) at a shaft portion... | 04/21/2009 |
| 7513169 | Rotational position measuring device A rotational position measuring device for measuring a rotational position of a rotating shaft includes generating means for generating a sine wave signal and a cosine wave signal according to the rotational position of the rotating shaft; successive calculating mea... | 04/07/2009 |
| 7433758 | Control apparatus of robot A robot control apparatus capable of largely reducing a calculation amount to be capable of lowering a load of a CPU is provided. A control apparatus of a robot includes: a plurality of shafts interfering with each other; each of the shafts including a motor (8 | 10/07/2008 |
| 7415363 | High resolution torque measurement on a rotating shaft with movement compensation An apparatus for determining the torque imposed on a rotatable shaft. The shaft has at least four paired probes, paired horizontal probes and paired vertical probes. The horizontal probes are positioned 90 degrees apart from the vertical probes. If the shaft moves h... | 08/19/2008 |
| 7398701 | Device and method for determining torques on a turbine shaft A device is described for determining the torque which is applied to a turbine shaft (10), the determination device having at least one system for contactless measurement of the integral torsion of the turbine shaft (10) and a unit for contactless meas... | 07/15/2008 |
| 7370540 | Rotation angle sensor, in particular for an electrical steering system of an industrial truck Rotation angle sensor, in particular for an electrical steering system of an industrial truck, in which two magnetic field sensitive sensor elements are arranged on orthogonal axes and a permanent magnet is attached to a shaft extending through the axis intersection... | 05/13/2008 |
| 7367250 | Digital beam torque wrench A digital beam-type torque wrench has a main beam and a stationary beam having a distal end thereof fixedly attached at or near a distal end of the main beam. A sensing assembly is disposed generally at a proximal end of the main beam and includes a displacement sen... | 05/06/2008 |
| 7366636 | Rotational angle detector A rotational angle detector for detecting the rotational angle of the rotor in a wide range without requiring dark current. A first detection gear including an m number of teeth and a second detection gear including an L number of teeth are each engaged with a main ... | 04/29/2008 |
| 7360458 | Method and device for determining the torque on gear shafts A method and a device for determining the torques on gear shafts. With the help of this method and the device in the case of a constant transmission ratio, the rotational speed of a first gear shaft (2, 19) and the rotational speed of a second gear shaft (... | 04/22/2008 |
| 7357041 | Rotation detection device Torque ripple of a motor due to a rotation detection device is reduced. A periodicity gain multiplier 51 multiplies the rotation angle θ of a detection target by a ripple periodic number m per rotation of the detection target. An adder 53 adds a phase... | 04/15/2008 |
| 7358722 | Integrated three-dimensional magnetic sensing device and method to fabricate an integrated three-dimensional magnetic sensing device An integrated three-dimensional magnetic or any field sensing device and a method to fabricate an integrated three-dimensional magnetic sensing device is presented. An integrated three-dimensional magnetic sensing device comprises an apparatus that defines at least ... | 04/15/2008 |
| 7347106 | Torque sensor with inverted sensing element and integral shaft housing Torque sensing methods and systems are disclosed. In general, a sensing element and a sensor housing can be provided for maintaining the sensing element. A plurality of wirebond posts can be assembled perpendicular to a plane of the sensing element. The sensing elem... | 03/25/2008 |
| 7340969 | Rotation-detecting apparatus A rotation-detecting apparatus includes a rotation-detecting device for detecting a rotation of a rotor, a rotational speed-detecting device (3) for detecting a rotational speed of the rotor and a transfer signal-generating device for generating a digitized t... | 03/11/2008 |
| 7340345 | Method and circuit arrangement for determining a quality level of phase signals The present invention relates to a method and a circuit arrangement for evaluating phase signals for determining an angle or a path of a linearly or rotationally displaced component, whereby a number (N) of measured phase values (α), produced by scanning at ... | 03/04/2008 |
| 7328616 | Digital angular velocity detection device A digital angular velocity detection device, including a stat or formed on a substrate. A rotor operable to rotate in response to an external force is provided. The rotor has a plurality of electrodes formed at regular intervals on a curve at a predetermined radius ... | 02/12/2008 |
| 7308834 | Torque sensor and electric steering device using the same A torque sensor is provided with a torsion bar, first and second elongate sleeves respectively secured to one and the other ends of the torsion bar, and a pair of resolvers respectively mounted on the first and second elongate sleeves. First and second stop portions... | 12/18/2007 |
| 7302864 | Torque sensor A plurality of acoustic wave sensing devices can be provided, which are mechanically simulated for implementation upon a quartz wafer substrate. The quartz wafer substrate is appropriately etched to produce a quartz diaphragm from the quartz wafer substrate. A plura... | 12/04/2007 |
| 7301333 | Angle position detection apparatus An angle position detection apparatus according to the present invention includes: a unipolar resolver and a multipolar resolver installed so that reluctance is changed in synchronization with the revolution of a direct motor drive; and a select switch is used to sw... | 11/27/2007 |
| 7293476 | Power sensor module for engine transmission and driveline applications A power sensor module suitable for automotive and other high volume applications is disclosed. The power sensor module combines a speed sensing and torque sensing operation into a single unit. A power measurement can be derived from torque and speed. Combining torqu... | 11/13/2007 |
| 7263903 | Method and device for operating a vehicle A method and a device for operating a vehicle allow a torque of the vehicle during operation of the vehicle to be measured. A torsional angle at at least one drive shaft of the vehicle is measured, and the torque transmitted via the at least one drive shaft is ascer... | 09/04/2007 |
| 7258027 | Device for detecting absolute rotation angle and torque A detector of an absolute rotation angle and torque includes a first gear coupled to an input shaft of a torsion-bar unit, a gear A engaging with the first gear, and a first detecting section of an absolute rotation angle placed at the center of the gear A. The dete... | 08/21/2007 |
| 7254470 | Fault tolerant torque sensor signal processing A method for generatig a fault tolerant sensor signal for a motor control system in a vehicle steering system. The method includes receiving at least three sensor signals indicative of a sensed parameter and generating a plurality of parameter pair signals responsiv... | 08/07/2007 |
| 7249527 | System for sensing absolute torque and a module comprising it A system for determining the absolute torque applied to a rotating shaft includes a sensitive element that is deformable under torsion and a measuring device having first and second coders that are intended to be rotationally fixed, respectively, in the vicinity of ... | 07/31/2007 |
| 7216552 | Prognostic and diagnostic system for air brakes Vehicles equipped with air brake systems and onboard vehicle management computers are programmed to develop both a prognosis and diagnosis of problems in the supporting, compressed air supply system from monitoring compressed air supply tank pressure. Variance of me... | 05/15/2007 |
| 7210360 | Apparatus for sensing position and/or torque An apparatus measures relative displacement between a first end and a second end of a shaft. The first and second ends being centered on a shaft axis. The apparatus includes first and second ferromagnetic plates. The first ferromagnetic plate has a first side and a ... | 05/01/2007 |
| 7201044 | Torque sensor integrated with engine components A torque sensor system and method. An automotive engine is located opposite a torque converter, such that a shaft extends from the engine and interacts with the torque converter. A target is located between the engine and torque converter. One or more torque sensors... | 04/10/2007 |
| 7201069 | Angle sensor An angle sensor includes a first gear configured to be concentrically mounted to a rotor, a second gear configured to mesh with the first gear, and a first rotation angle detector configured to detect a rotation angle of the second gear, wherein the first rotation a... | 04/10/2007 |
| 7200515 | Rotation angle sensor A rotation angle sensor includes a first and a second detection gears rotatable with a steering shaft, a first detector configured to detect a rotation angle of the first detection gear, a second detector configured to detect a rotation angle of the second detection... | 04/03/2007 |
| 7197945 | Torque direction detecting device for brushless motor A torque direction detecting device for an electric motor includes a resolver which provides a pair of a sin θ signal and a cos θ signal with θ changing from 0 degree to 360 degrees in electric angle according to rotation of the brushless motor, a circuit which c... | 04/03/2007 |
| 7183761 | Rotation sensor In a rotation sensor including a rotor 10 mounted to a rotating shaft S and having a conductive sensing unit 12 whereof the width varies in the circumferential direction; and stationary cores 31, 32, 41, 42 each including an exciting coil for fo... | 02/27/2007 |
| 7181983 | Torque sensor malfunction diagnostic system A system to diagnose a malfunction of a torque sensor in a vehicle steering system includes a voltage difference generator that outputs a voltage difference by comparing a voltage of a contact part between a temperature correcting coil and a torque detecting coil in... | 02/27/2007 |
| 7178412 | Encoder failure detection An encoder failure detector system and method for detecting failure of an encoder at near-zero rotational speeds. For example, in one embodiment a failure is indicated if a torque command exceeds a selected threshold for a selected period of time and no movement of ... | 02/20/2007 |
| 7174794 | Rotation sensor and coupling for rotation sensor A coupling includes a first coupling member, a second coupling member, and a third coupling member being located in between the first coupling member and the second coupling member. The third coupling member has formed thereon a first pair of connecting elements dia... | 02/13/2007 |
| 7165465 | Dynamic load fixture for application of torsion loads for rotary mechanical systems A dynamic load fixture (DLF) applies a torsion load to a unit under test (UUT) to achieve the demanding aerodynamic load exposures encountered by a control actuation system (CAS) in flight. Instead of fixing the end of the torsion bar, the DLF controls the applicati... | 01/23/2007 |
| 7155985 | Torque sensor for vehicle steering system A torque sensor for a vehicle steering system includes a voltage boosting circuit that boosts a voltage supplied from a power source, an oscillator, a current amplifier, an inverting current amplifier, first and second coils, first and second resistors, a differenti... | 01/02/2007 |
| 7148679 | Transformer probe A probe (10) for sensing movement of a body of magnetic material comprises a magnetically energisable pole piece (30), a closed loop electrical circuit (20) having a first end (25) which is wound around the pole piece (30) and form... | 12/12/2006 |
| 7145813 | Semiconductor device with circuit for detecting abnormal waveform of signal and preventing the signal from being transmitted A semiconductor device includes a first detection circuit, a second detection circuit, a determination circuit and a pulse generation circuit. The first detection circuit detects the leading edge of the pulse waveform of an input signal. The second detection circuit... | 12/05/2006 |
| 7146287 | Resolver signal processing method and processing apparatus The electrically-powered steering apparatus obtains a steering torque and a steering angle within an allowable input range of those inputted into a first resolver and a second resolver based on a real zero point α and further, a steering torque and a steering angle... | 12/05/2006 |
