A dynamic tire pressure sensor system for a bike comprises a dynamic tire pressure sensor device and a user receiving carrier wherein the dynamic tire pressure sensor device comprises at least a tire pressure sensor module, a processing module and a transmission module: the tire pressure sensor module transmits tire pressure change data to the processing module; the processing module either performs data operation independently or transmits tire pressure change data to the user receiving carrier from the transmission module for data operation in order to analyze pedaling cadences and pedaling forces during cycling and provide/display real-time sports information on the user receiving carrier.

In order to easily and accurately measure the cogging torque of an electric motor, the present invention includes a dynamometer connected to an electric motor, a torque sensor adapted to measure the torque of the electric motor, and a cogging torque measurement motor for measuring the cogging torque of the electric motor, and is configured such that when measuring the cogging torque of the electric motor, the electric motor, the dynamometer, and the cogging torque measurement motor are connected.

In order to easily and accurately measure the cogging torque of an electric motor, the present invention includes a dynamometer connected to an electric motor, a torque sensor adapted to measure the torque of the electric motor, and a cogging torque measurement motor for measuring the cogging torque of the electric motor, and is configured such that when measuring the cogging torque of the electric motor, the electric motor, the dynamometer, and the cogging torque measurement motor are connected.

A method and a system of managing load sharing among a plurality of power sources are disclosed. According to certain embodiments, the method includes determining a total power output to be directed from the plurality of power sources to at least one power consumer. The method also includes retrieving a Brake Specific Fuel Consumption (BSFC) curve associated with each of the plurality of power sources. The method further includes determining an operating priority for each of the plurality of power sources based on operating constraints associated with the respective power source. The method further includes determining a load share for each of the plurality of power sources based on at least the total power output, the BSFC curves, and the operating priorities.

A method and a system of managing load sharing among a plurality of power sources are disclosed. According to certain embodiments, the method includes determining a total power output to be directed from the plurality of power sources to at least one power consumer. The method also includes retrieving a Brake Specific Fuel Consumption (BSFC) curve associated with each of the plurality of power sources. The method further includes determining an operating priority for each of the plurality of power sources based on operating constraints associated with the respective power source. The method further includes determining a load share for each of the plurality of power sources based on at least the total power output, the BSFC curves, and the operating priorities.

A dynamometer includes a dynamometer chassis configured to support a vehicle thereon. A roller load test unit is mounted in a load supporting surface of the dynamometer chassis, and a chassis to chassis load measurement device is attached between the dynamometer chassis and a chassis of the vehicle positioned on the dynamometer chassis. A load sensing mechanism is attached within the chassis to chassis load measurement device between the dynamometer chassis and the chassis of the vehicle supported on the dynamometer chassis such that a longitudinal axis of the vehicle extends therethrough, and the load sensing mechanism is configured to measure force in the longitudinal direction of the vehicle.

A dynamometer includes a dynamometer chassis configured to support a vehicle thereon. A roller load test unit is mounted in a load supporting surface of the dynamometer chassis, and a chassis to chassis load measurement device is attached between the dynamometer chassis and a chassis of the vehicle positioned on the dynamometer chassis. A load sensing mechanism is attached within the chassis to chassis load measurement device between the dynamometer chassis and the chassis of the vehicle supported on the dynamometer chassis such that a longitudinal axis of the vehicle extends therethrough, and the load sensing mechanism is configured to measure force in the longitudinal direction of the vehicle.

A method of measuring motion power and resistance coefficient of a bicycle measures sensed data including at least one front projecting area of a bicycle ridden by a user, an air temperature value, an air pressure value, a traveling speed value, an acceleration value, a relative wind speed value, an inclination value and a total weight value to calculate an air resistance coefficient, a rolling friction coefficient of a bicycle tire, a force and a motion power applied to the bicycle by the user, so that the user may learn a better riding posture for different riding conditions and reduce the air resistance effectively by adjusting the riding posture, so as to reduce the consumed motion power. Through the installation of a display unit, the user may know about the data sensed by the sensor and the computation result of the processing unit anytime.

A method of measuring motion power and resistance coefficient of a bicycle measures sensed data including at least one front projecting area of a bicycle ridden by a user, an air temperature value, an air pressure value, a traveling speed value, an acceleration value, a relative wind speed value, an inclination value and a total weight value to calculate an air resistance coefficient, a rolling friction coefficient of a bicycle tire, a force and a motion power applied to the bicycle by the user, so that the user may learn a better riding posture for different riding conditions and reduce the air resistance effectively by adjusting the riding posture, so as to reduce the consumed motion power. Through the installation of a display unit, the user may know about the data sensed by the sensor and the computation result of the processing unit anytime.

A hub for measuring the driving torque of a cycle wheel, the hub including a central shaft defining an axis of rotation of the wheel, and a hub body mounted to rotate freely about the shaft, the hub body including a central portion bordered on both sides by respective flanges, the flanges fastening at least one connecting element to connect the hub body to a rim of the wheel. The hub includes a system for measuring the driving torque of the wheel including strain gauges fixed on the hub body.