A stepper motor driver with brake drive, a drive device and an automation device are disclosed. The stepper motor driver comprises a microprocessor (1) embedded with a communication protocol, an external interface unit (3) mutually connected to the microprocessor (1) and a communication interface circuit (2); the microprocessor (1) is also connected to a drive control circuit (4) and a brake device (5), and the brake device (5) is mutually connected to the external interface unit (3); the microprocessor (1) is also mutually connected to a power supply circuit (13) that provides a stable power supply voltage. The stepper motor driver has such advantages as simple structure, high capacity to resist interference, high effectiveness, low cost, and ease in maintenance.

A brake circuit discharge system is disclosed that includes: a motor drive circuit configured to drive a motor; a brake drive circuit configured to drive a brake B to decelerate and stop the driving of the motor and to apply the brake when power is cut off; a control unit configured to control the operation of the motor drive circuit and the brake drive circuit; a capacitor connected to a power line of the brake drive circuit; a discharge resistor connected in parallel with the capacitor to the power line of the brake drive circuit, and configured to discharge electric charge accumulated in the capacitor; a discharge changeover switch connected in series to the discharge resistor; and a discharge instruction generation circuit connected to the discharge changeover switch, and configured to generate a switching instruction signal for opening and closing the discharge changeover switch.

There is provided a method of controlling an electric vehicle. The method includes obtaining by a controller of the electric vehicle a first state indicator of a state of the electric vehicle, receiving at the controller a status indicator of an operating status of the electric vehicle, and updating by the controller the state of the electric vehicle based on the status indicator to an updated state. The updated state may be associated with a second state indicator. The method also includes determining by the controller a given braking type of a braking to be applied to the electric vehicle. This determining may be based on one or more of the second state indicator and the status indicator. The method also includes applying to the electric vehicle the braking of the given braking type. Systems for applying such braking are also provided.

There is provided a method of controlling an electric vehicle. The method includes obtaining by a controller of the electric vehicle a first state indicator of a state of the electric vehicle, receiving at the controller a status indicator of an operating status of the electric vehicle, and updating by the controller the state of the electric vehicle based on the status indicator to an updated state. The updated state may be associated with a second state indicator. The method also includes determining by the controller a given braking type of a braking to be applied to the electric vehicle. This determining may be based on one or more of the second state indicator and the status indicator. The method also includes applying to the electric vehicle the braking of the given braking type. Systems for applying such braking are also provided.

There is provided a method of controlling an electric vehicle. The method includes obtaining by a controller of the electric vehicle a first state indicator of a state of the electric vehicle, receiving at the controller a status indicator of an operating status of the electric vehicle, and updating by the controller the state of the electric vehicle based on the status indicator to an updated state. The updated state may be associated with a second state indicator. The method also includes determining by the controller a given braking type of a braking to be applied to the electric vehicle. This determining may be based on one or more of the second state indicator and the status indicator. The method also includes applying to the electric vehicle the braking of the given braking type. Systems for applying such braking are also provided.

In a motor according to an aspect of the invention, a brake includes a first clamp and a second clamp, a member to be clamped disposed between the first clamp and the second clamp, a first fixing member configured to fix the member to be clamped to a shaft, and a driving section configured to bring the first clamp and the second clamp into contact with the member to be clamped. The first clamp includes a first contact section. The second clamp includes a second contact section. A first housing hole is provided in a housing. The driving section includes a power cable drawn out to the outside of the housing via the first housing hole. The first housing hole overlaps the first contact section, the second contact section, the member to be clamped, and the first fixing member in a plan view from a first radial direction.

In a motor according to an aspect of the invention, a brake includes a first clamp and a second clamp, a member to be clamped disposed between the first clamp and the second clamp, a first fixing member configured to fix the member to be clamped to a shaft, and a driving section configured to bring the first clamp and the second clamp into contact with the member to be clamped. The first clamp includes a first contact section. The second clamp includes a second contact section. A first housing hole is provided in a housing. The driving section includes a power cable drawn out to the outside of the housing via the first housing hole. The first housing hole overlaps the first contact section, the second contact section, the member to be clamped, and the first fixing member in a plan view from a first radial direction.

An object of the present invention is to provide a motor control device capable of estimating a delay with high accuracy even in a case where there is a fluctuation in disturbance torque or delay time and of suppressing the influence of the delay. For this end, the present invention includes a motor MTR, an ECU 2 that controls the rotation of the motor MTR, and an ECU 1 that sends a torque command to the ECU 2 based on a command value. The ECU 1 includes a disturbance estimation block 100 and a delay estimation block 200. The disturbance estimation block 100 estimates disturbance torque (τd) using a torque command input to the ECU 2 and a feedback value of the motor MTR. The delay estimation block 200 estimates a delay using a torque command output from the ECU 1, the feedback value of the motor MTR, and the disturbance torque (τd).

A luminaire is provided that includes a head, a movement system, and a control system. The movement system rotates the luminaire head around an axis of rotation. The movement system includes a motor and a braking system. The motor moves a luminaire mechanism. The luminaire mechanism may be a gobo wheel, a lens, or other optical device of the luminaire, or it may be the luminaire head or the luminaire yoke. The control system determines whether the motor is rotating and engages the braking system when the motor is not rotating. When the motor is stopped, the control system may store in non-volatile memory a current absolute position of the luminaire mechanism.

A power-off emergency braking system, or parking brake system is presented in which, at each power-up, energy is stored in the structure of the brake so as to ensure the power-off application of the brake and the holding of same in the event of an interruption to the power supply of the device.