Solenoid

About: Solenoid is a research topic. Over the lifetime, 19278 publications have been published within this topic receiving 114721 citations.

Development and Test of JT-60SA Central Solenoid Model Coil

Abstract: A central solenoid (CS) model coil (CSMC) was manufactured by using real manufacturing jigs and procedure to validate the CS manufacturing processes for JT-60SA. The winding accuracy and the temperature control precision during the heat treatment met the requirements. The vacuum pressure impregnation process was also successfully finished. The cold test of the CSMC was performed as a final check of the manufacturing process. The joint resistance, the Ic, and the pressure drop measurements were conducted as the verification test. The results of verification test satisfied the design requirements. These results indicate that the manufacturing processes of the JT-60SA CS has been established. The manufacturing of real CS pancakes just started after finishing the CSMC test.

Bilateral Control of Nonlinear Pneumatic Teleoperation System With Solenoid Valves

Abstract: In past research on the control of pneumatic actuators, typically proportional servovalves have been used for achieving high-performance control of the mass flow rate. In this brief, we instead use fast-switching ON/OFF valves due to their distinct advantages in terms of low cost and small size. Accurate control of pneumatic actuators with ON/OFF solenoid valves is a challenge since the system dynamics is both discrete input and highly nonlinear. In this brief, we apply a hybrid control algorithm to a pneumatic actuator with ON/OFF valves. Such a control approach is developed for choosing the best control vector at each sample time to track the reference state (i.e., desired force) in the inner force control loop within a bilateral teleoperation system. Experimental results show that good teleoperation transparency is achieved despite all the obstacles such as discrete input and nonlinear behavior of the pneumatic-actuated teleoperation system.

Carjacking defense system

Abstract: A motor vehicle carjacking defense apparatus comprises a double pole switch which actuates at least one solenoid controlling at least one valve which interconnects a nozzle to a pump connected to a pressurized tank containing a non-toxic and non-corrosive irritant. The switch also overrides the vehicles electric window system, the alarm system, and the air flow system simultaneously sealing the windows and the air flow system and energizing the alarm system. Alternatively, the switch located inside the vehicle actuates an infrared heat detector connected to said solenoid wherein upon actuation of the detector, the detector energizes the solenoid from an electrical power supply. A plurality of nozzles and infrared heat detectors are arrayed around the vehicle whereby when the detector is armed it detects the presence of a carjacker and causes a spray of a pressurized, non-toxic and non-corrosive irritant and smoke towards the would-be carjacker. A secondary circuit may be activated so as to cause a siren or loudspeaker or the car horn to emit a high-pitched sound.