6results about How to "Avoid high temperature aging" patented technology

The invention discloses a thermally-induced rigidity-variable high-performance mounting bracket and a control method thereof, relates to the technical field of vibration reduction equipment, and aims to solve the technical problem that an existing vehicle-mounted motor vibration reduction bracket cannot be adaptively adjusted along with temperature change. Through the TiNiNb shape memory alloy pull column, temperature self-adaption rigidity switching, low-temperature rigidity fixing impact resistance and normal-high-temperature flexible vibration reduction are achieved, and vibration characteristics of different temperature ranges of the motor are adapted; the vibration buffering gasket is matched with the air damping mechanism to form double vibration reduction, and the high-frequency broadband vibration attenuation effect is greatly improved through the triple damping effect; the ventilation air bag realizes forced air circulation by means of motor vibration, vibration reduction heat is quickly discharged, and high-temperature vibration reduction stability is guaranteed; the vibration wave mechanism is matched with the one-way shaft ring, vibration is converted into reverse rotation force of the radial vibration buffering ring, eccentric radial vibration force of the rotor is counteracted from the source, and accurate radial vibration reduction is achieved.

The application provides a riding assistance control method and device. The method comprises: acquiring a riding state parameter; determining a riding scene according to the riding state parameter; determining an assistance ratio according to the riding scene; and performing operation control on a riding assistance motor. The application provides a riding assistance control method and device, which can reasonably adjust the assistance torque output by the assistance motor according to the riding scene, avoid the loss of long-time and large assistance torque, improve the service life of the assistance motor, and thus improve the balance between the riding experience, product life and assistance torque output.

The utility model relates to the technical field of delivery pump accessories, concretely relates to conductive slurry delivery pump wear -resisting sealing shaft sleeve structure, including the shaft body, the outside of shaft body is equipped with the shaft sleeve body, and the shaft sleeve body is composed of the base layer of setting in the outer layer, the wear -resisting layer of setting on the inner surface of base layer and the anticorrosive layer of setting on the wear -resisting layer surface, the both ends of shaft sleeve body are fixedly installed with the sealing seat, and the inner annular side surface of sealing seat is inlaid with two mutually symmetrical polyurethane sealing rings of inside and outside, and the metal framework oil seal is still equipped with on sealing seat, and the annular side surface of shaft sleeve body is fixedly installed with a plurality of radiating fins, the utility model discloses can promote the wear -resisting and corrosion -resistant performance of whole, is favorable for prolonging the service life.

This invention relates to the field of electronic circuit technology, and more particularly to a method and system for measuring the dynamic threshold voltage of a field-effect transistor (FET). The method includes the following steps: generating a high-speed pulse signal with a preset rise time using a pulse signal generator; applying the high-speed pulse signal to the gate of the FET under test, while simultaneously acquiring the voltage waveform of the FET gate using an oscilloscope, denoted as the gate voltage waveform; and monitoring the current response of the FET drain in real time using a current probe, denoted as the drain current response, with the sampling rate of the drain current response synchronized with the sampling rate of the gate voltage waveform. This invention quantizes the channel setup delay in situ in terms of electrical characteristics, thereby redefining the threshold voltage based on the potential at the instant the channel formation is completed, eliminating the masking of transient characteristics by slow DC scanning.

The utility model relates to the technical field of reflective films, and discloses a waterproof durable reflective film which comprises a reflective film body and an auxiliary installation mechanism arranged on the outer side of the reflective film body, the auxiliary installation mechanism comprises a positioning film, a tearing film is pasted to the bottom of the positioning film, and a positioning piece is connected with a sealing plug through an air hole through the arranged auxiliary installation mechanism. When the reflective film needs to be fixed, the sealing plug is opened, air in the suction cup is exhausted through the air hole, negative pressure is formed, the suction cup is tightly adsorbed to the installation surface, the tearing film is torn down, and then the positioning film can be attached to the target installation position, so that the tedious installation process of a traditional reflective film is simplified, and meanwhile the installation efficiency is improved. The scale marks on the positioning film can assist installation personnel in accurately determining the installation size and position of the reflective film, rework caused by installation errors is avoided, the installation efficiency is greatly improved, the easily-torn connecting film can rapidly separate the auxiliary installation mechanism from the reflective film, and use is not affected.

The application provides a blade deicing device and a deicing method, which comprise a heating assembly and an air supply assembly connected with the heating assembly and blowing heated air to the cavity inside the blade; a plurality of temperature monitoring assemblies arranged at different positions of the blade and used for monitoring the temperature at each position of the blade in real time; an environment monitoring assembly used for monitoring the rain and snow conditions of the current environment; a controller in communication connection with the heating assembly, the air supply assembly, the temperature monitoring assemblies and the environment monitoring assembly, used for controlling the power or start-stop of the heating assembly and the air supply assembly according to the received rain and snow condition signals and temperature signals; and a power supply used for providing working power for each electric component. The application uses hot air circulation combined with multi-point temperature monitoring to replace the traditional local conduction heating, solves the technical problem that the heat cannot be transmitted to the distal end of the blade in the traditional heating mode, realizes uniform deicing of the whole blade, and effectively restores the power generation of the fan in winter.