An isolator including a body having a wall with slots that extend through a thickness of the wall from an isolator exterior to an isolator interior; the isolator comprising a center of elasticity; the slots having a cut angle oriented as angled relative to a radial direction orthogonal with an axis of the isolator; and a damping material disposed within at least one of the slots.

A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a hydraulic pressure supply device, a torsion detection mechanism, and a controller. The torsion detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. The displacement gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. The controller calculates a relative torsional angle between the first attachment member and the second attachment member based on the detected displacement.

A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a spring height detection mechanism, and a controller. The spring height detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. These gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. A hydraulic pressure supply device is controlled by the controller and supplies fluid pressure according to the displacement detected by the gauges to the respective hydraulic cylinders.

A frequency tuned damper including at least one elastic element, and a method for the assembly of such a damper are disclosed. The damper comprises a deflection limiting mechanism arranged to prevent excessive movements of the elastic element if the damper is subjected to large external transient forces. The at least one elastic element forms part of the deflection limiting mechanism.

A method for determining, measuring and/or monitoring properties of a sensor system. In the method, a controlled change of at least one system parameter of the sensor system takes place in such a way that prior to the controlled change, the system parameter includes a first value and assumes at least one further value as a result of the controlled change. At least one characteristic variable of the sensor system and/or a change of the at least one characteristic variable of the sensor system is/are determined for the at least one further value of the system parameter. The determination, measuring and/or monitoring of properties of the sensor system take place based the at least one further value of the system parameter and the at least one characteristic variable determined in the second step and/or the change of the at least one characteristic variable.

A method for quantifying dynamic response characteristics of a real-time damper includes positioning the damper between a stationary member and a moveable member of a shock press having a force transducer, and transmitting motion control signals to the shock press, via a test controller, to stroke the moveable member and cause the damper to move with a constant velocity between extremes of stroke. A test drive signal is transmitted to the damper for a calibrated test duration. The test drive signal has a calibrated discrete frequency, frequencies, or a frequency sweep range. The method includes measuring, via the force transducer, a force component of the damper while transmitting the test drive signal, and quantifying the response characteristics of the damper over the test duration, including recording the response characteristics in a memory device. A test system includes a shock press, force transducer, and test controller.

A method for determining a detection sensitivity of a rotation rate sensor, the rotation rate sensor including an oscillatory system. A first quadrature signal of the oscillatory system is determined in a first step. A controlled change of a transfer function of the oscillatory system takes place in a second step. A second quadrature signal of the oscillatory system is determined in a third step. The detection sensitivity is determined in a fourth step on the basis of the first and second quadrature signal. A method is also described for determining a detection sensitivity of a rotation rate sensor, the rotation rate sensor including one first oscillatory system and one second oscillatory system.

A method for quantifying dynamic response characteristics of a real-time damper includes positioning the damper between a stationary member and a moveable member of a shock press having a force transducer, and transmitting motion control signals to the shock press, via a test controller, to stroke the moveable member and cause the damper to move with a constant velocity between extremes of stroke. A test drive signal is transmitted to the damper for a calibrated test duration. The test drive signal has a calibrated discrete frequency, frequencies, or a frequency sweep range. The method includes measuring, via the force transducer, a force component of the damper while transmitting the test drive signal, and quantifying the response characteristics of the damper over the test duration, including recording the response characteristics in a memory device. A test system includes a shock press, force transducer, and test controller.

A frequency tuned damper including at least one elastic element, and a method for the assembly of such a damper are disclosed. The damper comprises a deflection limiting mechanism arranged to prevent excessive movements of the elastic element if the damper is subjected to large external transient forces. The at least one elastic element forms part of the deflection limiting mechanism.

A method for determining, measuring and/or monitoring properties of a sensor system. In the method, a controlled change of at least one system parameter of the sensor system takes place in such a way that prior to the controlled change, the system parameter includes a first value and assumes at least one further value as a result of the controlled change. At least one characteristic variable of the sensor system and/or a change of the at least one characteristic variable of the sensor system is/are determined for the at least one further value of the system parameter. The determination, measuring and/or monitoring of properties of the sensor system take place based the at least one further value of the system parameter and the at least one characteristic variable determined in the second step and/or the change of the at least one characteristic variable.