摘要:
A pumping system comprising a membrane pump (1) for pumping a medium into or out of a vessel (6), the membrane pump comprising an actuating member (13) for moving a membrane (3) in a first direction from a first end position to a second end position against the action of a spring (12), the membrane being movable in the opposite direction from the second end position to the first end position under the action of the spring. The pumping system comprises sensing means (14) for generating a measuring value representing the location of said first end position of the membrane (3), and processing means (17) for establishing a pressure value representing the pressure inside a vessel (6) connected to an inlet (5) or outlet (24) of a pump chamber (4), the processing means (17) being adapted to establish said pressure value based on said measuring value.
摘要:
An electronic control systems and process for infusion devices and pump configurations can provide highly efficient use of electrical power. The system may include a capacitor (28), which is controlled to partially, but not fully discharge, to provide a power pulse to a pump coil (24). A power cut-off switch (40) may be provided to control the discharge of the capacitor such that the capacitor (28) is stopped from discharging prior to the actual end of the armature stroke. The time at which the capacitor discharge is stopped may be selected such that energy remaining in the coil (24) after the capacitor (28) stops discharging is sufficient to continue the pump stroke to the actual end of the stroke. A power disconnect switch (41) may be provided between the capacitor (28) and the battery (26), to allow the capacitor (28) to be electrically disconnected from the battery (26) during storage or other periods of non-use.
摘要:
A linear compressor is provided which may be employed in refrigerators or air conditioners. The linear compressor includes a compressor mechanism disposed within a hermetic casing. The compressor mechanism includes a linear motor which makes a piston reciprocate within a cylinder and a piston oscillation controller. The piston oscillation controller controls oscillations of the piston so as to bring an actual top dead center position of the piston into agreement with a reference top dead center position and alters the reference top dead center position based on a given parameter such as an ambient temperature or a required thermal load of, for example, a refrigerator. An improved structure of the linear motor is also provided.
摘要:
A flexible haptic actuator and corresponding method. The flexible haptic actuator comprises a core formed with a flexible material. The core defines a volume and is bendable. An electrical conductor is coiled around the core and is bendable. A casing surrounds the electrical conductor and at least a part of the core. The casing includes a plurality of flexible sections and a plurality of stiff sections. The casing is bendable. A haptic mass is suspended in the volume, the haptic mass being at least partially formed with a magnetic material. The haptic mass is movable in the volume in response to the electrical conductor generating a magnetic field.
摘要:
The invention relates to an optical device (1) for reducing Speckle noise of laser light, comprising a first optical element (10) extending along an extension plane, and an actuator means (20) designed for moving said first optical element (10) along said extension plane. According to the invention, said actuator means (20) is formed as a reluctance actuator means that is designed to exert a reluctance force on the first optical element (10) to move the first optical element (10) along said extension plane.
摘要:
A linear electric motors including a housing (2), a first armature (3,50) movable on a first essentially linear path with respect to the housing, and a second armature (4,54) movable on a second essentially linear path with respect to the housing (2), wherein the first armature (3,50) is mounted to the housing (2) by a first mounting spring (5,51), wherein the first armature (3,50) and the second armature (4,54) are coupled to each other by a coupling spring (7,57,58), and wherein the second armature (4,54) is mounted to the housing (2) by a second mounting spring (6,56).