摘要:
A measuring device for contactless detection of a rotational angle (&agr;) comprises a carrier plate (12), made of soft-magnetic material, which acts as a rotor. Two segments (15, 16) separated by a slit (17) are disposed in a plane parallel to the carrier plate (12). Disposed on one of the segments (16) is a short-circuit piece (20), and all these parts are of soft-magnetic material. The short-circuit piece (20) and the segments (15, 16) serve to guide the magnetic flux that is generated by a permanent magnet (13) disposed on the carrier plate (12). Since the short-circuit piece (20) protrudes past the carrier plate (12), or in a further feature the carrier plate (12) protrudes past the short-circuit piece (20), insensitivity to axial or radial play is possible. Furthermore, the measuring device is relatively simple and space-saving in design.
摘要:
A sensor for measuring a variable, in particular a physical variable, includes at least one converter element converting the variable into an electrical signal. At least one electronic signal processing unit conditions and/or processes the electrical signal to provide a sensor signal. The at least one electronic signal processing unit has at least one diagnosis device. An interface passes on the sensor signal through a connection, in particular a cable connection, to an electrical device, in particular a control device. The diagnosis device causes a fault signal instead of the sensor signal to be present at the interface when a fault occurs, for clearly distinguishing a fault at the interface from a processing fault. A circuit having such a sensor and a method for operating the sensor and the circuit are also provided.
摘要:
A final control element for a control unit, for a throttle body located in a conduit carrying a gaseous medium in an internal combustion engine, is disclosed which has a control shaft, supporting the control unit in a manner fixed against relative rotation; a power takeoff member of a final control element gear, the power takeoff member being seated on the control shaft in a manner fixed against relative rotation; and an error sensor, detecting the rotary position of the control shaft, with a rotor part that is connected to the control shaft in a manner fixed against relative rotation. The error sensor is a contactless measurement rotary angle sensor, whose rotor part is integrated by material and positive engagement with the drive member. Preferably, the rotor part is made of sheet metal, and the positive engagement is established by spraying the power takeoff member, made of plastic, onto it. The rotor part is welded to the control shaft.
摘要:
A device for restoring a rotary member into a defined normal position, with a spatially stationary fixed catch, which predetermines the normal position, and a driver catch, which is coupled to the rotary member and can be moved past the fixed catch, each of which has stop surfaces embodied on each of its opposing sides, and with a clamping spring, which encompasses the catches in a prestressed fashion with two bent spring legs, in order to prevent a rotary play between the clamping spring and the catches in the normal position, and an elastic spring element in at least one leg section of the spring legs extending across the stop surfaces of the catches, which spring element is supported against the associated stop surface with a spring force that is less powerful than the prestressing force of the clamping spring.
摘要:
A sensor for measuring a variable, in particular a physical variable, includes at least one converter element converting the variable into an electrical signal. At least one electronic signal processing unit conditions and/or processes the electrical signal to provide a sensor signal. The at least one electronic signal processing unit has at least one diagnosis device. An interface passes on the sensor signal through a connection, in particular a cable connection, to an electrical device, in particular a control device. The diagnosis device causes a fault signal instead of the sensor signal to be present at the interface when a fault occurs, for clearly distinguishing a fault at the interface from a processing fault. A circuit having such a sensor and a method for operating the sensor and the circuit are also provided.
摘要:
An electronic circuit for detecting measured quantities, having a sensor unit for generating an analog measurement signal and having a signal detecting unit (120) with a first analog/digital converter for digitizing the analog measurement signal. Differences in the fluctuations of the supply voltages that are supplied to the sensor unit and the signal detecting unit essentially result in the generation of undesirable fluctuations in the measurement signal. To minimize these effects or compensate for them, the digitized measurement signal is corrected in response to a voltage signal (U) that represents the imprecision x1 of the first supply voltage (VS1).
摘要:
An actuator for a control unit has a control motor with a motor power takeoff shaft; a control shaft that carries the control unit; and a step-up gear, disposed between the motor power takeoff shaft and the control shaft, as well as a restoring device for restoring the control unit to a basic position if the control motor fails. To make it possible to use a single-stage step-up gear with a major step-up ratio and with advantages in terms of installation space, weight, and production costs, the restoring device has two separate energy-storing means, preferably embodied as restoring springs, of which one feeds back to the motor power takeoff shaft and the other feeds back to the control shaft.
摘要:
A final control element for a control unit, for a throttle body located in a conduit carrying a gaseous medium in an internal combustion engine, is disclosed which has a control shaft, supporting the control unit in a manner fixed against relative rotation; a power takeoff member of a final control element gear, the power takeoff member being seated on the control shaft in a manner fixed against relative rotation; and an error sensor, detecting the rotary position of the control shaft, with a rotor part that is connected to the control shaft in a manner fixed against relative rotation. The error sensor is a contactless measurement rotary angle sensor, whose rotor part is integrated by material and positive engagement with the drive member. Preferably, the rotor part is made of sheet metal, and the positive engagement is established by spraying the power takeoff member, made of plastic, onto it. The rotor part is welded to the control shaft.
摘要:
An actuator for a control unit has a control motor with a motor power takeoff shaft; a control shaft that carries the control unit; and a step-up gear, disposed between the motor power takeoff shaft and the control shaft, as well as a restoring device for restoring the control unit to a basic position if the control motor fails. To make it possible to use a single-stage step-up gear with a major step-up ratio and with advantages in terms of installation space, weight, and production costs, the restoring device has two separate energy-storing means, preferably embodied as restoring springs, of which one feeds back to the motor power takeoff shaft and the other feeds back to the control shaft.
摘要:
An electronic circuit for detecting measured quantities has a sensor unit for generating an analog measurement signal and a signal detecting unit (120) with a first analog/digital converter for digitizing the analog measurement signal. Differences in the fluctuations of the supply voltages that are supplied to the sensor unit and the signal detecting unit essentially result in the generation of undesirable fluctuations in the measurement signal. To minimize these effects or compensate for them, the digitized measurement signal is corrected In response to a voltage signal (U) that represents the imprecision x1 of the first supply voltage (VS1).