Sz Dji Technology Co., Ltd.

Wanqi Liu

Qiu Lan

Changxing Zhou

Huai Huang

An encoder includes a code disc and a processor communicatively coupled with the code disc. The code disc is configured to rotate along with a rotating object and includes a plurality of fan teeth extending radially. One of the plurality of fan teeth is different from other ones of the plurality of fan teeth, and the other ones of the fan teeth are same to each other. A first portion of a detection signal that is generated in one rotation of the code disc, corresponding to the one of the plurality of fan teeth, is different from a second portion of the detection signal, corresponding to each of the other ones of the fan teeth. The processor is configured to detect the rotation of the code disc to obtain the detection signal and a rotation parameter of the rotating object based on the detection signal.

Rotation parameter detection method, encoder, laser radar and unmanned aerial vehicle

A method for controlling a motor includes obtaining addressing information of an electronic speed governor coupled to the motor, determining a rotation direction of the motor based on the addressing information, and providing a drive signal to the motor according to the rotation direction.

Control method for driving motor rotation, electronic governor, power system, and unmanned aerial vehicle

A detachable control device includes an operation member, a detachable interface configured to attach the detachable control device to a handle of a gimbal device, a wireless communication circuit, and a controller configured to detect an operation on the operation member, and generate control data according to the operation. The control data includes at least one of gimbal orientation control data for controlling an attitude of a gimbal of the gimbal device or camera function control data for controlling a photographing device mounted at the gimbal to perform a corresponding function. If the detachable control device is not attached to the handle, the controller sends the control data to at least one of the gimbal device or the photographing device through the wireless communication circuit.

Detachable control device, gimbal device and handheld gimbal control method

A method of controlling a motor includes determining a first motor controlling parameter measurement based on a signal received from a position sensor, determining a second motor controlling parameter based on one or more motor electrical parameters, and controlling operation of the motor based on at least one of the first motor controlling parameter measurement or the second motor controlling parameter measurement.

Methods and systems for brushless motor control

Systems, apparatuses and methods for indicating a moveable device such as an unmanned aerial vehicle (UAV) are disclosed herein. The present technology provides an illumination system having a light source and an illuminating component. In a representative embodiment, the light source is carried by a UAV and positioned to emit a light ray in a first direction. The illuminating component is carried by a propeller of the UAV. The illuminating component can include a light entrance portion, a light transmission portion, and a light exit portion. The light entrance portion is positioned to receive the light ray from the light source, the light transmission portion is positioned to transmit the light ray to the light exit portion, and the light exit portion is positioned to direct the light ray in a second direction so as to form a visual indication corresponding to the UAV.

Flight indication apparatuses, systems and associated methods

An encoder includes a code disc and a processor communicatively coupled with the code disc. The code disc is configured to rotate along with a rotating object and includes a plurality of fan teeth extending radially. Each of the fan teeth includes a first line segment edge, a second line segment edge, and an arc edge along a circumference of the code disc and connecting the first line segment edge and the second line segment edge. The first line segment edges of the fan teeth are arranged at the code disc with equal intervals. A length of the arc edge of one of the fan teeth is different from lengths of the arc edges of other ones of the fan teeth, and the lengths of the arc edges of the other ones of the fan teeth equal each other. The processor is configured to detect a rotation of the code disc to obtain a detection signal, and obtain a rotation parameter of the rotating object based on the detection signal. The rotation parameter includes at least one of a rotation direction, a rotation speed, or a mechanical zero position.

A method for processing a throttle control signal includes monitoring a signal transmission state of a throttle signal interface of an electronic speed regulator, determining that the signal transmission state is abnormal, and receiving the throttle control signal via a communication interface of the electronic speed regulator if the signal transmission state is determined to be abnormal.

Growing community of inventors

Shenzhen, China

Wanqi Liu