6 results about "Sinusoidal oscillation" patented technology

The application discloses a boosting ignition circuit and belongs to the technical field of fuzes. The boosting ignition circuit comprises a main controller, a sinusoidal oscillation circuit, a shaping circuit, a boosting circuit and an ignition control circuit. The boosting ignition circuit solves the technical problem of high reliability of fuze ignition. The boosting ignition circuit is stable and reliable, and double gate control guarantees safety. The boosting ignition circuit can be applied in applications with small ignition current demand.

Linear actuator comprising a first element (1) that is movable in one direction relative to a second element (2), wherein the first element (1) comprises a first magnet (6a), a second magnet (6b) and a third magnet (6c) arranged in that direction, wherein the first magnet (6a), the second magnet (6b) and the third magnet (6c) each have N-poles and S-poles in a direction perpendicular to that direction, wherein the N poles and the S poles of the second magnet (6b) are displaced relative to the N poles and the S poles of the first magnet (6a) in a direction perpendicular to that direction, wherein the N poles and the S poles of the third magnet (6c) are displaced relative to the N poles and the S poles of the second magnet (6b) in a direction perpendicular to that direction, wherein the second element (2) has at least two projecting poles (8a) arranged in the direction perpendicular to that direction and facing the first element (1), and at least two coils (4a, 4b, 4c, 4d) arranged in the direction perpendicular to that direction and each wound around the projecting poles (8a), and including at least two coils (4a, 4b, 4c, 4d): an A-phase coil (4a) and a B-phase coil (4b) that is phase-shifted by 90 degrees relative to the A-phase coil (4a), the A-phase coil (4a) and a / B-phase coil (4d) which is phase-shifted by 270 degrees to the A-phase coil (4a), an / A-phase coil (4c) and the / B-phase coil (4d) which is shifted by 90 degrees relative to the / A-phase coil (4c), the / A-phase coil (4c) and the B-phase coil (4b), which is phase-shifted by 270 degrees to the / A-phase coil (4c), or a coil (4a, 4c) that is magnetized by the sine oscillation and a coil (4b, 4d) that is magnetized by a cosine oscillation.

One example is extending the measurable distance while ensuring safety for the human body. [Solution] The measuring device (10) is a device that measures an object by scanning it with pulsed light. The measuring device (10) comprises a light-emitting element (12), a light-receiving unit (14), a movable mirror (16), and a control unit (18). The light-emitting element (12) emits pulsed light. The light-receiving unit (14) receives the reflected pulsed light. The movable mirror (16) changes the direction of emission of the pulsed light. The control unit (18) controls the light emission intensity of the light-emitting element (12). In the measuring device (10), the reflective surface of the movable mirror (16) is oscillated sinusoidally, causing the direction of emission of the pulsed light to move back and forth in the first direction (101). The control unit (18) emits pulsed light of higher intensity in the end region (112) including the end of the first direction (101) of the scanning range than in the central region (114) including the center of the first direction (101) of the scanning range.

The embodiment of the invention provides a differential capacitance displacement transducer. The differential capacitance displacement transducer comprises a sinusoidal oscillation circuit, a capacitor bank, an addition amplification circuit, a differential comparison circuit and a demodulation filtering amplification circuit, the sinusoidal oscillation circuit is used for generating a differential sinusoidal oscillation signal of which the peak-to-peak value is a positive and negative first voltage value and applying the differential sinusoidal oscillation signal to a first movable pole plate and a second movable pole plate of the capacitor bank; the addition amplification circuit is used for carrying out addition calculation on the differential sinusoidal signals output by the fixed pole plate of the capacitor bank and outputting sinusoidal signals; the differential comparison circuit is used for carrying out comparison calculation on the differential sinusoidal signal and outputting a square wave signal with the same phase as the differential sinusoidal signal; and the demodulation filtering and amplifying circuit is used for rectifying the sinusoidal signal by using the square signal, filtering and amplifying the rectified sinusoidal signal, and outputting a detected vibration voltage signal. According to the differential capacitance displacement transducer, detection of tiny vibration signals can be achieved, noise interference is reduced, and the detection precision is improved.

The application discloses a kind of regularized constraint heat transfer coefficient dynamic determination method and system.The application introduces sine oscillation in jacket temperature, data is divided into sliding window;Linear model containing low-frequency term and simple harmonic term of the same frequency is constructed in window, and the energy balance equation is established by extracting the same frequency complex amplitude;Further, the least square target function with regularization term is constructed with the estimation value of the previous window as prior, and the non-negative constraint based on the interpolation of the boundary before and after reaction is applied, and the UA dynamic evaluation is realized by cyclic solution.The application effectively decouples non-steady-state drift and noise, suppresses numerical mutation, obtains smoother and more physical law heat transfer coefficient and heat release rate result, and significantly improves the robustness of complex reaction process calorimetry.

Technique and mechanism for processing polyphonic audio signals. Processing includes filtering the audio signals to generate a set of narrow band signals, estimating an instantaneous magnitude and frequency associated with the narrow band signals and driving a bank of sinusoidal oscillators based on the instantaneous magnitude and frequency to create an output audio signal.