Control system for pure electric vehicles
Conventional mechanical controls can use traditional methods such as steering wheels, accelerator pedals, and braking (electric vehicles do not require a clutch). But many modern cars, such as Hyundai Hy-wire, use a lot of sophisticated modern systems that use drive by wire. This wire control system comes from the fly by wire system in the aircraft industry. The control unit in this system is a highly efficient converter that converts motion into electrical signals. Electronic signals are passed to the electronic controller or to the computer, which controls the servos of the braking, steering and throttle systems.
The controls have different configurations and are usually perfectly configured, such as steering wheels, acceleration and brake pedals on the automatic transmission, and the "gear lever" type. However, pure electric vehicles are likely to break through this standard and use different systems, such as lever control systems. The lever control system typically controls the motor with a four-quadrant controller that provides forward drive power in the first quadrant and regenerative braking in the second quadrant (the other two quadrants function the same when reversing). Because an electronic control unit can perform both acceleration control and conventional brake control, it is easier to accelerate and brake the car with a lever. A mechanical brake can be added to the end of the lever.
Some manufacturers have tested the lever control device, which has combined the steering and acceleration slam brakes for control.
The lever control can also be used in a mechanical combination that controls braking and steering, often referred to as an auxiliary servo system. The advantage of this system is that some mechanical controls can remain uncontrolled when the servo system fails. The line control will be a little off guard when it is out of control, but it should be remembered that the line flight control system has been successfully used on the aircraft for many years.
A modern control system for pure electric vehicles has the great advantage that its computer system can override the driver's instructions. For example, the power of a car's engine typically allows the car to climb steeply at a reasonable speed, but this power may provide excessive acceleration and speed, wasting energy and reducing driving range. It is very feasible to provide an electronic speed control device to prevent excessive speed and acceleration. Electronic speed control devices can be linked to satellite navigation systems while ensuring that cars do not exceed speed limits, enhance road safety and maximize car range.
For electric vehicles, people usually pay attention to energy conservation, and loading a computer combined with a satellite navigation system can make it more advantageous. The latter can give the shortest journey by giving a precise direction to reach any destination, or directly tell the driver the nearest gas station.
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