摘要:
A microstepper motor which comprises two electromechanical drive elements, especially piezoelectric bending actuators, having effective directions that are perpendicular to each other. These actuators act upon a drive ring to thereby rotate a shaft. The actuators are non-radially hinged to the drive ring via a torsion-proof, nested frame-type complex structure (drive module) including an interior drive ring, a frame and a U-shaped outer frame. The drive is compact and, the drive module is configured as a single injection-molded structure.
摘要:
A metering device has an actuating unit within a housing in which an actuator is inserted and a hydraulic compensating element. The hydraulic compensating element is connected to the actuator and can be filled with a fluid when subjected to pressure. A first end of the actuator is provided with a first end cap. The metering device further has a stop that is disposed on the housing in the form of a seat, faces the first end cap, and defines a stopping position for the first end cap. The stop maintains a maximum distance between a sealing element and the end cap, the distance being smaller than the actuator traveling distance such that the actuator stroke beyond the end cap is sufficient for opening the valve. The first end cap hits the stop when moving in the direction of the hydraulic compensating element such that the movement is blocked.
摘要:
An information converter has at least two material layers having polygonal base surfaces, which are connected to each other in a shear-rigid way, wherein at least in one material layer a change of length can be induced. The polygonal base surface has at least two different interior angles.
摘要:
A solid state actuator arrangement comprising an actuator which is configured as a solid state bending actuator and which has a first and a second end section opposite each other, a fastening device for fastening the first end section of the actuator in such a manner that it can still be adjusted, and connections for applying a driver signal to the actuator for adjusting the second end section by bending the actuator between at least two positions, an extension element being fastened to the free second end section of the actuator.
摘要:
A solid-state actuator drive apparatus has—a shaft, —a pivot bearing for supporting the shaft, —a drive body, —at least two actuators for the excitation of the drive body and the shaft relative to each other for causing the shaft to rotate relative to the drive body, and—a base element, on which these components are attached. Either the drive body is configured such that it has a drive body opening, and the shaft at least leads into the drive body opening, —or the shaft is configured as a hollow shaft, and an element of the drive body having an annular or discoid circumference is disposed therein. The drive body is disposed stationary relative to the base element. The shaft is disposed in the pivot bearing and is adjustably disposed in the radial direction of the shaft relative to the base element by the solid-state actuators.
摘要:
A piezoelectric actuating unit has a piezoelectric actuator pressed to a first cap which makes it possible to fix the actuating unit thereabove to the drive body of the piezoelectric drive device and cables and/or contact pins used in the form of contact elements with the actuator for the electrical operation thereof. In an advantageous manner, the first cap has at least one orifice for introducing the contact element. In particularly advantageous manner, the actuating units are used in the piezoelectric drive device with a drive body which has a cylindrical drive surface, at least two actuating units provided with the piezoelectric actuators which displace the drive body on a drive plane, a drive shaft which is placed on the drive body surface and is rotated by oscillation and the contact elements for connecting an actuator operating circuit to the actuators.
摘要:
A circuit and/or a corresponding method for controlling a piezoelectric or electrostrictive actuator (P) have a series-connected driver stage (G) which provides a control signal which is used to drive the piezoelectric actuator (P). A reference capacitor (M), which is used to measure a charge (qP) of the actuator (P), is serially connected to the actuator (P). The reference capacitor (M) is used as a series capacitor in order to measure the actuator charge (q A (T)=q P (t)) of the piezoelectric actuator. The output variable is a voltage which is proportional to the actuator charge. The voltage is guided to an A/D-converter and is processed further in a digital manner or guided directly to a analogue controller.
摘要:
A circuit for analogously controlling a capacitive charge, has a drive source used to provide an operating voltage or an operating flow used to charge the capacitive charge, a circuit arrangement used to charge and discharge the charge, and a storage capacity used to intermediately store the charge of the charge during the discharge of the charge and to emit intermediately stored charge to the charge during charging of the charge. In a method for analogously controlling a capacitive charge by applying a operational voltage or an operating flow of a drive source in order to charge the capacitive charge onto the charge and to discharge the charge, during a first discharge phase, the charge of the charge is intermediately stored in a storage capacity and during a first charging phase, which is used to charge the charge, the charge from the charge capacity is charged in the charge.
摘要:
The injector tip of an injection valve which injects directly into the combustion chamber protrudes therein, thereby incurring the risk that combustion residues can become deposited on the injector tip. When the injection valve is in a closed state, the possible attachments of combustion residues along a separation line (10) are eliminated by means of a special configuration of the surface at the separation line (10) between the valve body and a valve plate. The surface is represented in a smooth, step-less, edge-less and curved manner.
摘要:
A microstepper motor which comprises two electromechanical drive elements, especially piezoelectric bending actuators, having effective directions that are perpendicular to each other. These actuators act upon a drive ring to thereby rotate a shaft. The actuators are non-radially hinged to the drive ring via a torsion-proof, nested frame-type complex structure (drive module) including an interior drive ring, a frame and a U-shaped outer frame. The drive according to the invention is compact and, the drive module being is configured as a single injection-molded structure.