The present invention relates to a motor braking performance testing device, comprising: a motor positioning mechanism, a linkage mechanism, a power supply, a speed detection module, a timing module, a standard data storage module, a data comparison module, a test result output module, and a control module. The power supply, the speed detection module, the timing module, the standard data storage module, the data comparison module and the test result output module are all electrically connected to the control module. The present invention has the advantages that the device can test the braking performance of high-speed motors such as motors of lawn mowers, and make test results more accurate.

The present invention relates to a motor braking performance testing device, comprising: a motor positioning mechanism, a linkage mechanism, a power supply, a speed detection module, a timing module, a standard data storage module, a data comparison module, a test result output module, and a control module. The power supply, the speed detection module, the timing module, the standard data storage module, the data comparison module and the test result output module are all electrically connected to the control module. The present invention has the advantages that the device can test the braking performance of high-speed motors such as motors of lawn mowers, and make test results more accurate.

A test bench configured to test a drag damper. The test bench comprises a first support that can be rotated about a first axis by a motor, the test bench comprising a second support that can rotate about a second axis, the second axis being axially offset from the first axis, the test bench comprising a first connector secured to the first support and a second connector secured to the second support, the first connector and the second connector being offset from the first axis and the second axis, the first connector and the second connector being opposite each other along an arrangement axis and being configured to carry the damper in line with the arrangement axis.

A test bench configured to test a drag damper. The test bench comprises a first support that can be rotated about a first axis by a motor, the test bench comprising a second support that can rotate about a second axis, the second axis being axially offset from the first axis, the test bench comprising a first connector secured to the first support and a second connector secured to the second support, the first connector and the second connector being offset from the first axis and the second axis, the first connector and the second connector being opposite each other along an arrangement axis and being configured to carry the damper in line with the arrangement axis.

Friction disk sets of clutches and brakes are used, for example, in automatic transmissions. In clutch test benches for such clutches, the friction disks are held in a test chamber on inner and outer disk carriers. The test bench arrangement has a clutch unit which includes first and second disk carriers. The first disk carrier can be moved relative to the second disk carrier. A drive input section includes a drive input mechanism for producing relative movement between the first and the second disk carrier. A first driven shaft is mounted by at least one first bearing unit. The first disk carrier is drive-connected, via the first shaft, to the drive input mechanism. The first shaft is mounted to rotate by virtue of the first bearing unit. The test bench arrangement includes a measuring unit for determining a frictional torque of the first bearing unit.

To provide a characteristic evaluation device that can properly evaluate a characteristic of a shaft coupling while considering a delay in a response of a motor, a characteristic evaluation device of a shaft coupling includes: a motor system including a drive motor, a rotation angle sensor configured to acquire a rotation angle of a drive shaft, and a motor control unit configured to control the drive motor based on a torque command; a rotational load connected to a driven shaft; and a processor configured to output the torque command and calculate a frequency response of a gain of an amplitude of an angular velocity ω of the rotation angle, wherein the processor is configured to calculate a characteristic of the shaft coupling based on a response characteristic of the motor system and the frequency response.

The invention relates to a device for testing the precision retaining ability and fatigue life of RV reducer. The device includes a workbench, a mounting bracket base, a upper pressure plate for the mounting bracket, a servo motor, a mounting fixed sleeve, a tested RV reducer, a temperature sensor, an extension arm, a simulated swing arm, two counterweight blocks named the first and second counterweight block, the first displacement sensor, a sensor holder, a sensor protector, a detection rod, and the second displacement sensor. The device is equipped with two counterweight blocks at the end of the simulated swing arm to simultaneously provide variable loaded torque and loaded bending moment to the RV reducer. The first displacement sensor is placed under the counterweight block to measure the positioning accuracy and repeat positioning accuracy of RV reducer. The second displacement sensor is placed under the detection rod to measure the bending stiffness of RV reducer. After running for a specified time, the precision retaining ability, fatigue life and wear rule of RV reducer are tested. The invention provides an experimental basis for theoretical research on the wear rule and accelerated life of RV reducer.

In this control apparatus design method, a feedback control system comprises a generalization plant including a nominal plant N representing the input/output characteristic of an object to be controlled and a fluctuation unit Δ for making at least one model parameter included in the nominal plant N fluctuate, and a controller for applying input to the generalization plant P on the basis of output from the generalization plant P. The controller is designed so as to satisfy a prescribed design condition. The nominal plant N comprises a nominal value multiplication unit for multiplying an input signal η by a nominal value for the model parameter and an addition unit for adding a fluctuation output signal ξ from the fluctuation unit Δ and an output signal from the nominal value multiplication unit. Further, the fluctuation unit Δ generates the fluctuation output signal ξ using a mapping Δp obtained from a Cayley transform of unbounded complex fluctuation Δg.

This testing system is provided with: an input side control device 5 for controlling an input side dynamometer to eliminate a deviation between a speed command signal w1ref and a speed detected signal w1; and an output side control device 6 for controlling output side dynamometer to eliminate a deviation between a torque command signal Tk1 ref and a torque detected signal Tk1. A control gain of the control device 5 is set such that the real part of a pole of a transfer function (w1/w1 ref) becomes greater toward the negative side than a value obtained by multiplying a resonant frequency by the negative sign, and a control gain of the control device 6 is set such that the real part of a pole of a transfer function (Tk1/Tk1 ref) becomes smaller toward the negative side than the real part of the pole of speed control system closed loop transfer function.

This testing system is provided with: an input side control device 5 for controlling an input side dynamometer to eliminate a deviation between a speed command signal w1ref and a speed detected signal w1; and an output side control device 6 for controlling output side dynamometer to eliminate a deviation between a torque command signal Tk1 ref and a torque detected signal Tk1. A control gain of the control device 5 is set such that the real part of a pole of a transfer function (w1/w1 ref) becomes greater toward the negative side than a value obtained by multiplying a resonant frequency by the negative sign, and a control gain of the control device 6 is set such that the real part of a pole of a transfer function (Tk1/Tk1 ref) becomes smaller toward the negative side than the real part of the pole of speed control system closed loop transfer function.