42results about How to "Stability check" patented technology

In a motor driving control device, a high-frequency alternating voltage or rotation voltage (having a frequency of ωh) is applied to a motor so that magnetic saturation occurs in the motor, thereby extracting, from a γ-axis current, a high-frequency second-harmonic component (a frequency component of 2×ωh) that is obtained by attenuating at least a direct-current component of the γ-axis current. The polarity checker detects the polarity of the magnetic pole of the rotor based on the difference, caused by magnetic saturation, between the positive and negative amplitudes of the high-frequency second-harmonic component.

There is disclosed a method of inspecting the outer wall of a honeycomb structure body which can be performed without relying on human sensory functions and in which a defect detection level and an inspection time per honeycomb structure body are constant, so that stable inspection can be performed. In a method of inspecting the outer wall of a honeycomb structure body 1 made of a ceramic material, while rotating the honeycomb structure body 1, the outer wall of the honeycomb structure body 1 is imaged by a line camera 2, and the thus obtained image is processed to judge whether or not a defect is present in the outer wall of the honeycomb structure body 1.

An oil condition sensor includes rod-shaped electrodes and an opposed cup-shaped electrode. The rod-shaped electrodes are connected to a first power supply through first fixed resistors having a predetermined threshold. The voltage from the first power supply is applied through the respective rod-shaped electrodes to first inputs of respective operational amplifiers. The sensor further includes a second power supply which produces a voltage applied to second inputs of the respective operational amplifiers. Each operational amplifier produces a predetermined voltage if the voltage applied to the first input falls below the voltage applied to the second input. The output of each operational amplifier is connected to the second input through a second fixed resistor. There is a hysteresis relation between the input and output of the amplifiers, so that once an operational amplifier produces voltage, even if voltage from the corresponding conductor falls thereafter, the operational amplifier continuously produces voltage.

In accordance with an increase in speed, a wiring structure has rapidly become more microscopic and thinner and a wiring layer has become extremely thin, and therefore, giving a contact load to a probe for the inspection as has been conventionally done causes damage to a wiring layer and an insulation layer because the probe penetrates not only the oxide film but also the wiring layer or because of a concentration stress from the probe. On the other hand, decreasing the contact load causes unstable continuity between the probe and an electrode pad.It is an object of the present invention to surely and stably inspect an object to be inspected by breaking an oxide film with a low stylus pressure.The present invention is a probe that comes into electrical contact with an object to be inspected when inspecting an electrical characteristic of the object to be inspected, the probe including: a probe main body having a contact portion that comes into contact with the object to be inspected; and a plurality of conductive materials having tip portions projecting from the contact portion of the probe main body.

A cup (70) comprising a magnet (72) and projected surfaces (74) for triggering (38) a loose compressive friction check (22) to disengage (22A) and engage (22B) certain rods (16), such as those for door closers (10) which are utilized for controlling linear biasing forces (11A) and (11B) for objects such as doors (62).

The present invention is a method for inspecting a surface of an article through an image thereof by photographing a surface to be inspected of the article with a CCD camera, in which the surface of the article is inspected by selecting two arbitrary pixels from among pixels showing the surface to be inspected in the image and comparing the two pixels. When the two pixels are selected, for example, pixels in point-symmetry or line symmetry can be selected. Further, the two selected pixels are compared, for example, in brightness.

According to an apparatus for inspecting defects of a honeycomb structure that is provided with a current plate (41) and an air current formation means (air source (92) and a header tube (59)), fine defects or defects taking place in the vicinity of an outer periphery of the honeycomb structure can be detected with high sensitivity.

The invention provides a harmonic control system for new energy power plants. The harmonic control system comprises a controller, a harmonic compensation module, the new energy power plants, an outputswitch and a weather detection module. The controller controls turn-on or turn-off of the output switch to control connection or disconnection between the new energy power plants and an external loador a power grid. According to predicated harmonic values, the controller controls a harmonic wave supplement module to be connected into the new energy power plants through multiple times of simulation based on the Monte Carlo method. The new energy power plants include a wind power plant and a photovoltaic power plant. The wind power plant comprises a plurality of wind power generators, and thephotovoltaic power plant comprises a plurality of photovoltaic batteries. The weather detection module inputs weather data to the controller. The harmonic control system has the advantages that harmonic waves of new energy power generation systems can be controlled accurately and rapidly, and quality of input electric energy can be improved.

The invention discloses a miniature gastrointestinal robot. The robot comprises a shell, a front clamping mechanism, a rear clamping mechanism, an inner energy receiving system, a front electromagnet, a rear electromagnet, an inner control system and an outer energy emission system. The front clamping mechanism is in sliding connection with the front end of an inner hole of the shell, the rear clamping mechanism is fixed to the rear end of the shell, and the internal energy receiving system, the front electromagnet, the rear electromagnet and the inner control system are arranged in the inner hole of the shell; the front electromagnet and the rear electromagnet are fixed to the front clamping mechanism and the rear clamping mechanism respectively; an energy receiving coil of the inner energy receiving system is connected with a coil of the rear electromagnet in series; the inner control system provides power for the front clamping mechanism, the rear clamping mechanism and the front electromagnet; the outer energy emission system and the inner energy receiving system form a wireless energy supply system. Compared with capsule robots in other forms, the robot has the advantage in the aspect of size and is only 40 mm long, and the diameter of the largest portion of the robot is 16 mm.