Topic
Solenoid
About: Solenoid is a research topic. Over the lifetime, 19278 publications have been published within this topic receiving 114721 citations.
Papers published on a yearly basis
Papers
More filters
Patent•
30 Sep 2003
TL;DR: In this article, a very small fixed current is passed through the coil of a solenoid during use of cyclic PWM command, the fixed current being less than the current required to actuate the soleneoid to the “on” position.
Abstract: A very small fixed current is passed through the coil of a solenoid during use thereof when the solenoid is in its “off” state of cyclic PWM command, the fixed current being less than the current required to actuate the solenoid to the “on” position. While the current is flowing through the coil, the voltage across the coil is measured. The resistance of the coil is calculated according to Ohm's Law. When the actual resistance is known, the duty cycle imposed on the solenoid may be altered to compensate for the resistance deviation from nominal. This allows, for example, fuel injectors for internal combustion engines to deliver the correct amount of fuel under all operating conditions.
28 citations
TL;DR: A novel control method that combines on- off control and input shaping is used to obtain low-vibration smooth transients when compared with traditional proportional and integral control and on-off control.
Abstract: Solenoids are low-cost high-speed nonlinear actuators commonly used in switching mode. This paper presents a dual-solenoid actuator system for high-speed positioning applications. A novel control method that combines on-off control and input shaping is used to obtain low-vibration smooth transients when compared with traditional proportional and integral control and on-off control. Simulation results and experimental data confirm that this dual-solenoid position actuator with the novel control method is effective and practical.
28 citations
Patent•
28 Jul 2004
TL;DR: In this paper, a method for the calibration or mechanical adjustment, or calculation of a drive current for a solenoid-powered actuator for adjustment of the pressure-differential dependent flow of a fluid is presented.
Abstract: The invention relates to a method for the calibration or mechanical adjustment, or calculation of a drive current for a solenoid-powered actuator for adjustment of the pressure-differential dependent flow of a fluid. The scale of the pressure effect generated by the actuator can be determined in advance by means of the strength of the electrical drive for the actuator, even without the use of pressure sensors, whereby one or more actuator-specific calibration curves or constants KGind for the actuator are derived, such that a set flow (G) can be specifically achieved using said constants by adjustment with the strength of the current (I). The actuator-specific constants are automatically determined without the use of pressurising the actuator. The method can be used to control solenoid valves for ABS vehicle braking systems. Said solenoid valves are intrinsically configured to fully open and close, but can be given corresponding regulatory functions by means of the control system.
28 citations
Patent•
20 Jun 1972
TL;DR: A fluid flow control device including a body having a plurality of inlet passageways and a single common outlet passageway is described in this article, where a solenoid valve is connected to the body for controlling fluid flow from the inlet passesageways to the outlets.
Abstract: A fluid flow control device including a body having a plurality of inlet passageways and a single common outlet passageway, and a plurality of solenoid valves connected to the body for controlling fluid flow from the inlet passageways to the outlet passageway The device and the solenoid valves are resistant to corrosive liquids The amount of residual-liquid left in any inlet passageway downstream from each solenoid valve when that valve is closed is minimized, to provide as sharp a liquid interface as is possible between each liquid leaving the outlet passageway and the next successive liquid
28 citations
TL;DR: In this paper, a multi-domain nonlinear dynamic model of a proportional solenoid valve was presented, where electro-magnetic, mechanical and fluid subsystems of the valve were investigated, including their interactions.
Abstract: A multi-domain nonlinear dynamic model of a proportional solenoid valve was presented. The electro-magnetic, mechanical and fluid subsystems of the valve were investigated, including their interactions. Governing equations of the valve were derived in the form of nonlinear state equations. By comparing the simulated and measured data, the simulation model is validated with a deviation less than 15%, which can be used for the structural design and control algorithm optimization of proportional solenoid valves.
28 citations