7 results about "Physical quantity" patented technology

A control apparatus of a vehicle includes a clutch provided between a driving force source and a drive wheel; a torque transfer power controller that controls a torque transfer power of the clutch based on a predetermined condition; a behavior control apparatus that is provided separately from the clutch, that adjusts a physical quantity related to a speed of the vehicle that changes with a control of the torque transfer power of the clutch by the torque transfer power controller; and a function determiner that determines a vehicle speed control function of the behavior control apparatus, wherein the torque transfer power controller controls the torque transfer power of the clutch based on the predetermined condition and a result of determination provided by the function determiner.

A physical quantity sensor includes: the fixed arm section includes a first side surface insulating film disposed on a side surface of the laminate structure, a first side surface conductor film disposed on a surface of the first side surface insulating film, and a first connection electrode section provided to the upper insulating layer, and electrically connected to the first side surface conductor film, the movable arm section includes a second side surface insulating film disposed on a side surface of the laminate structure, a second side surface conductor film disposed on a surface of the second side surface insulating film, and a second connection electrode section provided to the upper insulating layer, and electrically connected to the second side surface conductor film, and the first side surface conductor film and the second side surface conductor film are disposed so as to be opposed to each other.

The invention relates to a fan direct-driven variable pitch system based on a digital twin and an optimum design method, and belongs to an optimum design method of a wind driven generator system. An SCADA (supervisory control and data acquisition) system and a sensor are installed in a physical solid model of the fan direct-driven variable pitch system, so that data of the generator speed, the wind speed, the power, a pitch angle, the variable pitch moment, the blade vibration, the environmental temperature and the like are collected; the data are transferred to the virtual space of the digital twin of the fan direct-driven variable pitch system by virtue of a digital twin mapping model, and the virtual space of the digital twin of the fan direct-driven variable pitch system is integratedwith multi-disciplinary, multi-physical quantity, multiscale and multi-probability simulation by updating a sensor and analyzing history data, so that the life cycle process of physical solid equipment of the corresponding fan direct-driven variable pitch system is reflected, the optimum design, production and reliable operation and maintenance of the system are completed, the problem of evaluation of the quality and manufacturability of the scheme after a traditional variable pitch system is manufactured can be solved, and the production cost is effectively reduced.

A sensor device is provided with a voltage detection type sensor unit for converting a physical quantity into a voltage value and outputting a voltage signal indicating the voltage value; a chopper amplifier unit for generating a modulation signal by chopping the voltage signal output from the sensor unit with a predetermined chopping frequency, amplifying the modulation signal into an amplification signal, then demodulating the amplification signal and outputting it as an output signal; an integration unit including an operational amplifier, an input resistor connected to the inverting input terminal of the operational amplifier and a capacitor connected between the inverting input terminal and an output terminal of the operational amplifier; and a digital conversion unit for converting the output signal integrated by the integration unit into a digital signal.

A device for controlling personal protection apparatus in a vehicle includes: at least one sensor unit that acquires at least one physical quantity; and evaluation and control unit which (i) produces, from the at least one acquired physical quantity, at least one signal curve that characterizes an impact, (ii) determines, as a function of an energy dissipation behavior of the vehicle, at least one temporal phase in the produced signal curve, and (iii) evaluates the at least one phase for crash classification and for a triggering decision for the personal protection apparatus. The evaluation and control unit retroactively calculates at least one feature of the energy dissipation based on a characteristic time in the signal curve that represents the end of a first temporal phase.

The invention relates to a method (100) for determining the depth of a crack in a solid, which includes:

• a step (110) of scanning a portion of the surface of the solid, parallel to the general direction of the crack, by the heat source at said speed; and
• a step (115), synchronous with the scanning step, of detecting at least one value of a physical quantity representing the local heating of the surface of the scanned solid; and

a step (120) of determining the depth of the crack as a function of at least one value detected at least at one predetermined scanning speed.