摘要:
Systems and methods are disclosed for controlling, diagnosing and prognosing the health of a motorized system. The systems may comprise a diagnostics system, a prognostic system and a controller, wherein the diagnostics system and/or prognostic system employs a neural network, an expert system, and/or a data fusion component in order to assess and/or prognose the health of the motorized system according to one or more attributes associated therewith. The controller may operate the motorized system in accordance with a setpoint and/or a diagnostics signal from the diagnostics system and/or prognostic information. Also disclosed are methodologies for controlling, diagnosing and prognosing the health of a motorized system, comprising operating a motor in the motorized system in a controlled fashion, diagnosing and/or prognosing the health of the motorized system according to a measured attribute associated with the motorized system, wherein the motor may be operated according to a setpoint and/or the diagnostics signal and/or prognosis.
摘要:
A method and circuit for supplying a variable voltage to an electrical a.c. load (R, L), comprising: a control signal input for receiving a switching control signal to control load output voltage; first and second circuit output terminals (ACL1, ACL2) for connection to the load; first switch means (S1) having an input coupled to the control signal input and having an output coupled between one (ACL1) of the circuit output terminals (ACL1) and a first a.c. line terminal (AC1); second switch means (S2) having an input coupled to the first switch means and having an output coupled between the first and second circuit output terminals (ACL1, ACL2) and coupled to a second a.c. line terminal (AC2); and providing a switching control signal to the control signal input to switch the first and second switch means complementarily. The switch means may each comprise a power transistor (Q1; Q2) and a bridge rectifier (B1; B2).
摘要:
Distribution evaluation of regional lung ventilation is obtained by placing a radionuclide and an array of scintillation detectors on opposite sides of a subject from evaluation units. Each of the signals from evaluation units of the detectors is stored in a memory. The signals are compared in a comparison block, and the comparison is recorded by a recorder.